Configuring and Troubleshooting Frame Relay
Contents
Introduction
Before You Begin
Conventions
Prerequisites
Components
Used
Background Theory
Configuring Basic Frame Relay
Network Diagram
Configurations
debug and
show Commands
Configuring Hub and Spoke Frame
Relay
Network Diagram
Configurations
show
Commands
Connecting from Spoke to
Spoke
Configurations
show Commands
Configuring
Frame Relay Subinterfaces
Point-to-Point
Subinterfaces
show Commands
Hub and Spoke Subinterfaces
show Commands
Configuring
Dynamic and Static Mapping for Multipoint Subinterfaces
Network Diagram
Configurations
debug and show
Commands
Configuring IP Unnumbered Frame Relay
Network Diagram
Configurations
show
Commands
Configuring Frame Relay Backup
Frame Relay Backup over ISDN
Configuration Per DCLI Backup
Hub and Spoke with Dialer Profiles
Configuring Frame Relay Switching
Network Diagram
Configurations
show
Commands
Configuring Frame Relay DLCI
Prioritization
Implementation
Considerations
Network Diagram
Configurations
debug and
show Commands
Frame Relay Broadcast Queue
Traffic Shaping
Traffic Shaping Parameters
Generic
Traffic Shaping
Frame Relay Traffic
Shaping
Commonly Used Frame Relay Commands
show frame-relay pvc
show frame-relay map
Frame Relay
and Bridging
Frame Relay and Memory
Troubleshooting Frame Relay
"Serial0 is down, line protocol is down"
"Serial0 is up, line protocol is down"
"Serial0 is up, line protocol is up"
Frame Relay Characteristics
IP Split Horizon Checking
Ping Your Own IP Address on a Multipoint Frame Relay
The Keyword broadcast
Reconfiguring a Subinterface
DLCI Limitations
IP/IPX/AT
Address
RIP and IGRP
Keepalive
Serial Interfaces
OSPF and Multipoint
Sources
Related
Information
Frame Relay is an industry-standard, switched data link layer protocol that
handles multiple virtual circuits using High-Level Data Link Control (HDLC)
encapsulation between connected devices. In many cases, Frame Relay is more
efficient than X.25, the protocol for which it is generally considered a
replacement. The following figure illustrates a Frame Relay frame (ANSI T1.618).
Note in the above figure, Q.922 addresses, as presently defined, are two
octets and contain a 10-bit data-link connection identifier (DLCI). In some
networks Q.922 addresses may optionally be increased to three or four octets.
The "flag" fields delimit the beginning and end of the frame. Following the
leading "flag" field are two bytes of address information. Ten bits of these two
bytes make up the actual circuit ID (called the DLCI, for data-link connection
identifier).
The 10-bit DLCI value is the heart of the Frame Relay header. It identifies
the logical connection that is multiplexed into the physical channel. In the
basic (that is, not extended by the Local Management Interface [LMI]) mode of
addressing, DLCIs have local significance; that is, the end devices at two
different ends of a connection may use a different DLCI to refer to that same
connection.
For more information on document conventions, see the Cisco Technical Tips
Conventions.
For more information and definitions for the terms used in this document,
please refer to the Frame Relay Glossary.
This document is not restricted to specific software and hardware
versions.
The information presented in this document was created from devices in a
specific lab environment. All of the devices used in this document started with
a cleared (default) configuration. If you are working in a live network, ensure
that you understand the potential impact of any command before using it.
Frame Relay was originally conceived as a protocol for use over ISDN
interfaces. Initial proposals to this effect were submitted to the International
Telecommunication Union Telecommunication Standardization Sector (ITU-T)
(formerly the Consultative Committee for International Telegraph and Telephone
[CCITT]) in 1984. Work on Frame Relay was also undertaken in the ANSI-accredited
T1S1 standards committee in the United States.
In 1990, Cisco Systems, StrataCom, Northern Telecom, and Digital Equipment
Corporation formed a consortium to focus Frame Relay technology development and
accelerate the introduction of inter operable Frame Relay products. They
developed a specification conforming to the basic Frame Relay protocol being
discussed in T1S1 and ITU-T, but extended it with features that provide
additional capabilities for complex internetworking environments. These Frame
Relay extensions are referred to collectively as the LMI. This is the "cisco"
LMI in the router as opposed to the "ansi" or "q933a" LMI.
Frame Relay provides a packet-switching data communications capability that
is used across the interface between user devices (such as routers, bridges,
host machines) and network equipment (such as switching nodes). User devices are
often referred to as data terminal equipment (DTE), while network equipment that
interfaces to DTE is often referred to as data circuit-terminating equipment
(DCE). The network providing the Frame Relay interface can be either a
carrier-provided public network or a network of privately owned equipment
serving a single enterprise.
Frame Relay differs significantly from X.25 in its functionality and format.
In particular, Frame Relay is a more streamlined protocol, facilitating higher
performance and greater efficiency.
As an interface between user and network equipment, Frame Relay provides a
means for statistically multiplexing many logical data conversations (referred
to as virtual circuits) over a single physical transmission link. This contrasts
with systems that use only time-division-multiplexing (TDM) techniques for
supporting multiple data streams. Frame Relay's statistical multiplexing
provides more flexible and efficient use of available bandwidth. It can be used
without TDM techniques or on top of channels provided by TDM systems.
Another important characteristic of Frame Relay is that it exploits the
recent advances in wide-area network (WAN) transmission technology. Earlier WAN
protocols, such as X.25, were developed when analog transmission systems and
copper media were predominant. These links are much less reliable than the fiber
media/digital transmission links available today. Over links such as these,
link-layer protocols can forego time-consuming error correction algorithms,
leaving these to be performed at higher protocol layers. Greater performance and
efficiency is therefore possible without sacrificing data integrity. Frame Relay
is designed with this approach in mind. It includes a cyclic redundancy check
(CRC) algorithm for detecting corrupted bits (so the data can be discarded), but
it does not include any protocol mechanisms for correcting bad data (for
example, by retransmitting it at this level of protocol).
Another difference between Frame Relay and X.25 is the absence of explicit,
per-virtual-circuit flow control in Frame Relay. Now that many upper-layer
protocols are effectively executing their own flow control algorithms, the need
for this functionality at the link layer has diminished. Frame Relay, therefore,
does not include explicit flow control procedures that duplicate those in higher
layers. Instead, very simple congestion notification mechanisms are provided to
allow a network to inform a user device that the network resources are close to
a congested state. This notification can alert higher-layer protocols that flow
control may be needed.
Once you have reliable connections to the local Frame Relay switch at both
ends of the permanent virtual circuit (PVC), then it is time to start planning
the Frame Relay configuration. In this first example, the Local Management
Interface (LMI)-type defaults to "cisco" LMI on Spicey. An interface is by
default a "multipoint" interface so, frame-relay inverse-arp is on (for
point-to-point, there is no Inverse ARP). IP split horizon checking is disabled
by default for Frame Relay encapsulation, so routing updates come in and out the
same interface. The routers learn the data-link connection identifiers (DLCIs)
they need to use from the Frame Relay switch via LMI updates. The routers then
Inverse ARP for the remote IP address and create a mapping of local DLCIs and
their associated remote IP addresses.
|
Spicey |
Spicey#show running-config
Building configuration...
Current configuration : 1705 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Spicey
!
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
ip address 3.1.3.1 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 140
!
!
router rip
network 3.0.0.0
network 124.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
Current configuration : 1499 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Prasit
!
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
!
interface Serial1
ip address 3.1.3.2 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 150
!
!
router rip
network 3.0.0.0
network 123.0.0.0
!
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
Before issuing debug commands, please see Important Information on Debug
Commands.
-
show frame-relay map
-
show frame-relay pvc
-
show frame-relay lmi
-
ping <device name>
-
show ip route
Spicey#show frame-relay map
Serial0 (up): ip 3.1.3.2 dlci 140(0x8C,0x20C0), dynamic,
broadcast,, status defined, active
Spicey#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 83 output pkts 87 in bytes 8144
out bytes 8408 dropped pkts 0 in FECN pkts0
in BECN pkts 0 out FECN pkts 0 out BECN pkts0
in DE pkts 0 out DE pkts 0
out bcast pkts 41 out bcast bytes 3652
pvc create time 01:31:50, last time pvc status changed 01:28:28
Spicey#show frame-relay lmi
LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 550 Num Status msgs Rcvd 552
Num Update Status Rcvd 0 Num Status Timeouts 0
Spicey#ping 123.123.123.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 123.123.123.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/40 ms
Spicey#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
3.0.0.0/24 is subnetted, 1 subnets
C 3.1.3.0 is directly connected, Serial0
124.0.0.0/24 is subnetted, 1 subnets
C 124.124.124.0 is directly connected, Ethernet0
R 123.0.0.0/8 [120/1] via 3.1.3.2, 00:00:08, Serial0
Prasit#show frame-relay map
Serial1 (up): ip 3.1.3.1 dlci 150(0x96,0x2460), dynamic,
broadcast,, status defined, active
Prasit#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 150, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1
input pkts 87 output pkts 83 in bytes 8408
out bytes 8144 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 38 out bcast bytes 3464
pvc create time 01:34:29, last time pvc status changed 01:28:05
Prasit#show frame-relay lmi
LMI Statistics for interface Serial1 (Frame Relay DTE) LMI TYPE = CISCO
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 569 Num Status msgs Rcvd 570
Num Update Status Rcvd 0 Num Status Timeouts 0
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Prasit#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
3.0.0.0/24 is subnetted, 1 subnets
C 3.1.3.0 is directly connected, Serial1
R 124.0.0.0/8 [120/1] via 3.1.3.1, 00:00:19, Serial1
123.0.0.0/24 is subnetted, 1 subnets
C 123.123.123.0 is directly connected, Ethernet0
In this example, the router learns which data-link connection identifiers
(DLCIs) it uses from the Frame Relay switch and assigns them to the main
interface. Then the router will Inverse ARP for the remote IP address.
Note:?You will not be able to ping Prasit's serial IP address from
Aton unless you explicitly add in Frame Relay maps on each end. If routing is
configured correctly, traffic originating on the LANs should not have a problem.
You will be able to ping if you use the Ethernet IP address as the source
address in an extended ping.
When frame-relay inverse-arp is enabled, broadcast IP traffic
will go out over the connection by default.
|
Spicey |
spicey#show running-config
Building configuration...
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname spicey
!
!
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
ip address 3.1.3.1 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 130
frame-relay interface-dlci 140
!
!
router rip
network 3.0.0.0
network 124.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
prasit#show running-config
Building configuration...
Current configuration : 1499 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname prasit
!
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
ip address 3.1.3.2 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 150
!
!
router rip
network 3.0.0.0
network 123.0.0.0
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Aton |
aton#show running-config
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname aton
!
!
interface Ethernet0
ip address 122.122.122.1 255.255.255.0
!
interface Serial1
ip address 3.1.3.3 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 160
!
router rip
network 3.0.0.0
network 122.0.0.0
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
-
show frame-relay map
-
show frame-relay pvc
-
ping <device name>
spicey#show frame-relay map
Serial0 (up): ip 3.1.3.2 dlci 140(0x8C,0x20C0), dynamic,
broadcast,, status defined, active
Serial0 (up): ip 3.1.3.3 dlci 130(0x82,0x2020), dynamic,
broadcast,, status defined, active
spicey#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 2 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 130, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 32 output pkts 40 in bytes 3370
out bytes 3928 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 30 out bcast bytes 2888
pvc create time 00:15:46, last time pvc status changed 00:10:42
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 282 output pkts 291 in bytes 25070
out bytes 27876 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 223 out bcast bytes 20884
pvc create time 02:28:36, last time pvc status changed 02:25:14
spicey#
spicey#ping 3.1.3.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.1.3.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/35/36 ms
spicey#ping 3.1.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.1.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/35/36 ms
prasit#show frame-relay map
Serial1 (up): ip 3.1.3.1 dlci 150(0x96,0x2460), dynamic,
broadcast,, status defined, active
prasit#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 150, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1
input pkts 311 output pkts 233 in bytes 28562
out bytes 22648 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 162 out bcast bytes 15748
pvc create time 02:31:39, last time pvc status changed 02:25:14
prasit#ping 3.1.3.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.1.3.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
prasit#ping 3.1.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.1.3.3, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
aton#show frame-relay map
Serial1 (up): ip 3.1.3.1 dlci 160(0xA0,0x2800), dynamic,
broadcast,, status defined, active
aton#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 160, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1
input pkts 35 output pkts 32 in bytes 3758
out bytes 3366 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 27 out bcast bytes 2846
pvc create time 00:10:53, last time pvc status changed 00:10:53
aton#ping 3.1.3.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.1.3.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/35/36 ms
aton#ping 3.1.3.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.1.3.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
You cannot ping from one spoke to another spoke in a hub and spoke
configuration using multipoint interfaces because there is no mapping for the
other spokes' IP addresses. Only the hub's address is learned via the Inverse
Address Resolution Protocol (IARP). If you configure a static map using the
frame-relay map command for the IP address of a remote spoke to use the local
data link connection identifier (DLCI), you can ping the addresses of other
spokes.
|
Prasit |
prasit#show running-config
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial
ip address 3.1.3.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 3.1.3.3 150
frame-relay interface-dlci 150 |
-
show frame-relay map
-
ping <device name>
-
show running-config
prasit#show frame-relay map
Serial1 (up): ip 3.1.3.1 dlci 150(0x96,0x2460), dynamic,
broadcast,, status defined, active
Serial1 (up): ip 3.1.3.3 dlci 150(0x96,0x2460), static,
CISCO, status defined, active
prasit#ping 3.1.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.1.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 68/70/80 ms
prasit#ping 122.122.122.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 122.122.122.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 64/67/76 ms
aton#show running-config
interface Ethernet0
ip address 122.122.122.1 255.255.255.0
!
interface Serial1
ip address 3.1.3.3 255.255.255.0
no ip directed-broadcast
encapsulation frame-relay
frame-relay map ip 3.1.3.2 160
frame-relay interface-dlci 160
aton#show frame-relay map
Serial1 (up): ip 3.1.3.1 dlci 160(0xA0,0x2800), dynamic,
broadcast,, status defined, active
Serial1 (up): ip 3.1.3.2 dlci 160(0xA0,0x2800), static,
CISCO, status defined, active
aton#ping 3.1.3.2
Type escape sequence to abort
Sending 5, 100-byte ICMP Echos to 3.1.3.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 68/68/68 ms
aton#ping 123.123.123.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 123.123.123.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 64/67/80 ms
Frame Relay subinterfaces provide a mechanism for supporting partially meshed
Frame Relay networks. Most protocols assume transitivity on a logical network;
that is, if station A can talk to station B, and station B can talk to station
C, then station A should be able to talk to station C directly. Transitivity is
true on LANs, but not on Frame Relay networks unless A is directly connected to
C.
Additionally, certain protocols, such as AppleTalk and transparent bridging,
cannot be supported on partially meshed networks because they require "split
horizon" in which a packet received on an interface cannot be transmitted out
the same interface even if the packet is received and transmitted on different
virtual circuits.
Configuring Frame Relay subinterfaces ensures that a single physical
interface is treated as multiple virtual interfaces. This capability allows us
to overcome split horizon rules. Packets received on one virtual interface can
now be forwarded out another virtual interface, even if they are configured on
the same physical interface.
Subinterfaces address the limitations of Frame Relay networks by providing a
way to subdivide a partially meshed Frame Relay network into a number of
smaller, fully meshed (or point-to-point) subnetworks. Each subnetwork is
assigned its own network number and appears to the protocols as if it is
reachable through a separate interface. (Note that point-to-point subinterfaces
can be unnumbered for use with IP, reducing the addressing burden that might
otherwise result).
|
Spicey |
Spicey#show running-config
Building configuration...
Current configuration : 1338 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Spicey
!
enable password ww
!
!
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.1 point-to-point
ip address 3.1.3.1 255.255.255.0
frame-relay interface-dlci 140
!
!
router igrp 2
network 3.0.0.0
network 124.0.0.0
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
Current configuration : 1234 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Prasit
!
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 point-to-point
ip address 3.1.3.2 255.255.255.0
frame-relay interface-dlci 150
!
router igrp 2
network 3.0.0.0
network 123.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
-
show frame-relay map
-
show frame-relay pvc
Spicey#show frame-relay map
Serial0.1 (up): point-to-point dlci, dlci 140(0x8C,0x20C0), broadcast
status defined, active
Spicey#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.1
input pkts 193 output pkts 175 in bytes 20450
out bytes 16340 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 50 out bcast bytes 3786
pvc create time 01:11:27, last time pvc status changed 00:42:32
Spicey#ping 123.123.123.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 123.123.123.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Prasit#show frame-relay map
Serial1.1 (up): point-to-point dlci, dlci 150(0x96,0x2460), broadcast
status defined, active
Prasit#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 150, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial1.1
input pkts 74 output pkts 89 in bytes 7210
out bytes 10963 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 24 out bcast bytes 4203
pvc create time 00:12:25, last time pvc status changed 00:12:25
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
The following hub and spoke sample configuration shows two point-to-point
subinterfaces and uses dynamic address resolution on one remote site. Each
subinterface is provided with an individual protocol address and subnetmask, and
the interface-dlci command associates the subinterface with a specified
data-link connection identifier (DLCI). Addresses of remote destinations for
each point-to-point subinterface are not resolved since they are point-to-point
and traffic must be sent to the peer at the other end. The remote end (Aton)
uses Inverse ARP for its mapping and the main hub responds accordingly with the
IP address of the subinterface. This occurs because Frame Relay Inverse ARP is
on by default for multipoint interfaces.
|
Spicey |
Spicey#show running-config
Building configuration...
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Spicey
!
!
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.1 point-to-point
ip address 4.0.1.1 255.255.255.0
frame-relay interface-dlci 140
!
interface Serial0.2 point-to-point
ip address 3.1.3.1 255.255.255.0
frame-relay interface-dlci 130
!
router igrp 2
network 3.0.0.0
network 4.0.0.0
network 124.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Prasit
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 point-to-point
ip address 4.0.1.2 255.255.255.0
frame-relay interface-dlci 150
!
router igrp 2
network 4.0.0.0
network 123.0.0.0
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Aton |
Aton#show running-config
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
!
hostname Aton
!
!
!
interface Ethernet0
ip address 122.122.122.1 255.255.255.0
!
interface Serial1
ip address 3.1.3.3 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 160
!
router igrp 2
network 3.0.0.0
network 122.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
-
show frame-relay map
-
show frame-relay pvc
Spicey#show frame-relay map
Serial0.2 (up): point-to-point dlci, dlci 130(0x82,0x2020), broadcast
status defined, active
Serial0.1 (up): point-to-point dlci, dlci 140(0x8C,0x20C0), broadcast
status defined, active
Spicey#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 2 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 130, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.2
input pkts 11 output pkts 22 in bytes 1080
out bytes 5128 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 17 out bcast bytes 4608
pvc create time 00:06:36, last time pvc status changed 00:06:36
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.1
input pkts 33 output pkts 28 in bytes 3967
out bytes 5445 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 17 out bcast bytes 4608
pvc create time 00:06:38, last time pvc status changed 00:06:38
Spicey#ping 122.122.122.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 122.122.122.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/35/36 ms
Spicey#ping 123.123.123.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 123.123.123.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Prasit#show frame-relay map
Serial1.1 (up): point-to-point dlci, dlci 150(0x96,0x2460), broadcast
status defined, active
Prasit#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 150, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial1.1
input pkts 45 output pkts 48 in bytes 8632
out bytes 6661 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 31 out bcast bytes 5573
pvc create time 00:12:16, last time pvc status changed 00:06:23
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Aton#show frame-relay map
Serial1 (up): ip 3.1.3.1 dlci 160(0xA0,0x2800), dynamic,
broadcast,, status defined, active
Aton#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 160, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1
input pkts 699 output pkts 634 in bytes 81290
out bytes 67008 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 528 out bcast bytes 56074
pvc create time 05:46:14, last time pvc status changed 00:05:57
Aton#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Dynamic address mapping uses Frame Relay Inverse ARP to request the next hop
protocol address for a specific connection, given a data-link connection
identifier (DLCI). Responses to Inverse ARP requests are entered in an
address-to-DLCI mapping table on the router or access server; the table is then
used to supply the next hop protocol address or the DLCI for outgoing traffic.
Since the physical interface is now configured as multiple subinterfaces, you
must provide information that distinguishes a subinterface from the physical
interface and associates a specific subinterface with a specific DLCI.
Inverse ARP is enabled by default for all protocols it supports, but can be
disabled for specific protocol-DLCI pairs. As a result, you can use dynamic
mapping for some protocols and static mapping for other protocols on the same
DLCI. You can explicitly disable Inverse ARP for a protocol-DLCI pair if you
know the protocol is not supported on the other end of the connection. Because
Inverse ARP is enabled by default for all protocols that it supports, no
additional command is required to configure dynamic address mapping on a
subinterface. A static map links a specified next hop protocol address to a
specified DLCI. Static mapping removes the need for Inverse ARP requests; when
you supply a static map, Inverse ARP is automatically disabled for the specified
protocol on the specified DLCI. You must use static mapping if the router at the
other end either does not support Inverse ARP at all or does not support Inverse
ARP for a specific protocol that you want to use over Frame Relay.
We've already seen how to configure a Cisco router to do Inverse ARP. The
following example shows how to configure static maps in case you need them for
multipoint interfaces or subinterfaces:
|
Aton |
Aton#show running-config
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Aton
!
!
interface Ethernet0
ip address 122.122.122.1 255.255.255.0
!
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 multipoint
ip address 4.0.1.3 255.255.255.0
frame-relay map ip 4.0.1.1 160 broadcast
!
router igrp 2
network 4.0.0.0
network 122.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Spicey |
Spicey#show running-config
Building configuration...Current configuration : 1652 bytes!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Spicey
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
ip address 4.0.1.1 255.255.255.0
encapsulation frame-relay
frame-relay map ip 4.0.1.2 140 broadcast
frame-relay map ip 4.0.1.3 130 broadcast
!
router igrp 2
network 4.0.0.0
network 124.0.0.0
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
Current configuration : 1162 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Prasit
!
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 multipoint
ip address 4.0.1.2 255.255.255.0
frame-relay map ip 4.0.1.1 150 broadcast
!
router igrp 2
network 4.0.0.0
network 123.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
-
show frame-relay map
-
show frame-relay pvc
Aton#show frame-relay map
Serial1.1 (up): ip 4.0.1.1 dlci 160(0xA0,0x2800), static, broadcast,
CISCO, status defined, active
Aton#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 160, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial1.1
input pkts 16 output pkts 9 in bytes 3342
out bytes 450 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 9 out bcast bytes 450
pvc create time 00:10:02, last time pvc status changed 00:10:02
Aton#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/35/36 ms
Spicey#show frame-relay map
Serial0 (up): ip 4.0.1.2 dlci 140(0x8C,0x20C0), static, broadcast,
CISCO, status defined, active
Serial0 (up): ip 4.0.1.3 dlci 130(0x82,0x2020), static, broadcast,
CISCO, status defined, active
Spicey#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 2 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 130, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 9 output pkts 48 in bytes 434
out bytes 11045 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 48 out bcast bytes 11045
pvc create time 00:36:25, last time pvc status changed 00:36:15
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 17 output pkts 26 in bytes 1390
out bytes 4195 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 16 out bcast bytes 3155
pvc create time 00:08:39, last time pvc status changed 00:08:39
Spicey#ping 122.122.122.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 122.122.122.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/40 ms
Spicey#ping 123.123.123.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 123.123.123.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/35/36
Prasit#show frame-relay map
Serial1.1 (up): ip 4.0.1.1 dlci 150(0x96,0x2460), static,
broadcast,
CISCO, status defined, active
Prasit#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 150, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1.1
input pkts 28 output pkts 19 in bytes 4753
out bytes 1490 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 9 out bcast bytes 450
pvc create time 00:11:00, last time pvc status changed 00:11:00
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
For more information on these commands, please see Frame
Relay Commands.
If you do not have the IP address space to use many subinterfaces, you can
use IP unnumbered on each subinterface. If this is the case, you need to use
static routes or dynamic routing so that your traffic is routed as usual, and
you must use point-to-point subinterfaces.
The example below illustrates this:
|
Spicey |
Spicey#show running-config
Building configuration...
Current configuration : 1674 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Spicey
!
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.1 point-to-point
ip unnumbered Ethernet0
frame-relay interface-dlci 140
!
router igrp 2
network 124.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
Current configuration : 1188 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Prasit
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 point-to-point
ip unnumbered Ethernet0
frame-relay interface-dlci 150
!
router igrp 2
network 123.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
-
show frame-relay map
-
show frame-relay pvc
Spicey#show frame-relay map
Serial0.1 (up): point-to-point dlci, dlci 140(0x8C,0x20C0), broadcast
status defined, active
Spicey#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial0.1
input pkts 23 output pkts 24 in bytes 3391
out bytes 4952 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 14 out bcast bytes 3912
pvc create time 00:04:47, last time pvc status changed 00:04:47
Spicey#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
124.0.0.0/24 is subnetted, 1 subnets
C 124.124.124.0 is directly connected, Ethernet0
123.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
I 123.0.0.0/8 [100/8576] via 123.123.123.1, 00:01:11, Serial0.1
I 123.123.123.0/32 [100/8576] via 123.123.123.1, 00:01:11,
Serial0.1
Spicey#ping 123.123.123.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 123.123.123.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Prasit#show frame-relay map
Serial1.1 (up): point-to-point dlci, dlci 150(0x96,0x2460), broadcast
status defined, active
Prasit#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 150, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial1.1
input pkts 24 output pkts 52 in bytes 4952
out bytes 10892 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 41 out bcast bytes 9788
pvc create time 00:10:54, last time pvc status changed 00:03:51
Prasit#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
124.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
I 124.0.0.0/8 [100/8576] via 124.124.124.1, 00:00:18, Serial1.1
I 124.124.124.0/32 [100/8576] via 124.124.124.1, 00:00:18,
Serial1.1
123.0.0.0/24 is subnetted, 1 subnets
C 123.123.123.0 is directly connected, Ethernet0
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/120/436 ms
You may want to back up Frame Relay circuits using ISDN. There are several
ways to do this. The first, and probably the best, is to use floating static
routes that route traffic to a Basic Rate Interface (BRI) IP address and use an
appropriate routing metric. You can also use a backup interface on the main
interface or on a per-data-link connection identifier (DLCI) basis. It may not
help much to back up the main interface because you could lose permanent virtual
circuits (PVCs) without the main interface going down. Remember, the protocol is
being exchanged with the local Frame Relay switch, not the remote router.
|
Router 1 |
ROUTER1#
!
hostname ROUTER1
!
username ROUTER2 password same
isdn switch-type basic-dms100
!
interface Ethernet 0
ip address 172.16.15.1 255.255.255.248
!
interface serial 0
ip address 172.16.24.129 255.255.255.128
encapsulation FRAME-RELAY
!
interface BRI0
description Backup ISDN for frame-relay
ip address 172.16.12.1 255.255.255.128
encapsulation PPP
dialer idle-timeout 240
dialer wait-for-carrier-time 60
dialer map IP 172.16.12.2 name ROUTER2 broadcast 7086639706
ppp authentication chap
dialer-group 1
isdn spid1 0127280320 2728032
isdn spid2 0127295120 2729512
!
router igrp 1
network 172.16.0.0
!
ip route 172.16.15.16 255.255.255.248 172.16.12.2 150
!--- Floating static route.
!
access-list 101 deny igrp 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255
access-list 101 permit ip 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255
dialer-list 1 LIST 101
! |
|
Router 2 |
ROUTER2#
!
hostname ROUTER2
!
username ROUTER1 password same
isdn switch-type basic-dms100
!
interface Ethernet 0
ip address 172.16.15.17 255.255.255.248
!
interface Serial 0
ip address 172.16.24.130 255.255.255.128
encapsulation FRAME-RELAY
!
interface BRI0
description ISDN backup interface for frame-relay
ip address 172.16.12.2 255.255.255.128
encapsulation PPP
dialer idle-timeout 240
dialer map IP 172.16.12.1 name ROUTER1 broadcast
ppp authentication chap
pulse-time 1
dialer-group 1
isdn spid1 0191933333 4445555
isdn spid2 0191933334 4445556
!
router igrp 1
network 172.16.0.0
!
ip route 172.16.15.0 255.255.255.248 172.16.12.1 150
!--- Floating static route.
!
access-list 101 deny igrp 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255
access-list 101 permit ip 0.0.0.0 255.255.255.255 162.27.9.0 0.0.0.255
dialer-list 1 LIST 101
! |
To verify if the ISDN is working, use the following debug commands.
Before issuing debug commands, please see Important Information on Debug
Commands.
-
debug isdn q931
-
debug ppp neg
-
debug ppp auth
Try to make an ISDN call from the calling side to the central side without
the backup commands. If this is successful, add the backup commands to the
calling side.
Note:?To test the backup, do not use the shutdown command on
the serial interface but emulate a real serial line problem by pulling out the
cable from the serial line.
Now let's assume that Spicey is the central side and that Prasit is the side
making connections to the central side (Spicey). Take care that you only add the
backup commands to the side that is calling the central side.
Note:? Backup load is not supported on subinterfaces. As we do not
track traffic levels on subinterfaces, no load is calculated.
|
Spicey |
Spicey#show running-config
Building configuration...
Current configuration : 1438 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Spicey
!
!
username Prasit password 0 cisco
!
!
isdn switch-type basic-net3
!
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.1 point-to-point
ip address 4.0.1.1 255.255.255.0
frame-relay interface-dlci 140
!
interface BRI0
ip address 3.1.6.1 255.255.255.0
encapsulation ppp
dialer map ip 3.1.6.2 name Prasit broadcast
dialer-group 1
isdn switch-type basic-net3
no peer default ip address
no cdp enable
ppp authentication chap
!
router igrp 2
network 3.0.0.0
network 4.0.0.0
network 124.0.0.0
!
ip classless
ip route 123.123.123.0 255.255.255.0 3.1.6.2 250
!
access-list 101 deny igrp any any
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
Current configuration : 1245 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Prasit
!
username Spicey password 0 cisco
!
!
isdn switch-type basic-net3
!
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 point-to-point
backup delay 5 10
backup interface BRI0
ip address 4.0.1.2 255.255.255.0
frame-relay interface-dlci 150
!
interface BRI0
ip address 3.1.6.2 255.255.255.0
encapsulation ppp
dialer map ip 3.1.6.1 name Spicey broadcast 6106
dialer-group 1
isdn switch-type basic-net3
ppp authentication chap
!
router igrp 2
network 3.0.0.0
network 4.0.0.0
network 123.0.0.0
!
ip route 124.124.124.0 255.255.255.0 3.1.6.1 250
!
access-list 101 deny igrp any any
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
-
show frame-relay map
-
show ip route
-
show isdn history
-
show isdn status
-
show interface bri 0
-
show isdn active
Spicey#show frame-relay map
Serial0.2 (up): point-to-point dlci, dlci 130(0x82,0x2020), broadcast
status defined, active
Serial0.1 (up): point-to-point dlci, dlci 140(0x8C,0x20C0), broadcast
status defined, active
Spicey#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
3.0.0.0/24 is subnetted, 2 subnets C
3.1.3.0 is directly connected, Serial0.2 C
3.1.6.0 is directly connected, BRI0
4.0.0.0/24 is subnetted, 1 subnets C
4.0.1.0 is directly connected, Serial0.1
124.0.0.0/24 is subnetted, 1 subnets C
124.124.124.0 is directly connected, Ethernet0
123.0.0.0/8 is variably subnetted, 2 subnets, 2 masks I
123.0.0.0/8 [100/8576] via 4.0.1.2, 00:00:00, Serial0.1 S
123.123.123.0/24 [250/0] via 3.1.6.2 I
122.0.0.0/8 [100/8576] via 3.1.3.3, 00:00:37, Serial0.2
Spicey#
*Mar 1 00:59:12.527: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up
*Mar 1 00:59:13.983: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:1, changed state to up
*Mar 1 00:59:18.547: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 6105 Prasit
Spicey#show isdn history
--------------------------------------------------------------------------------
ISDN CALL HISTORY
--------------------------------------------------------------------------------
Call History contains all active calls, and a maximum of 100 inactive calls.
Inactive call data will be retained for a maximum of 15 minutes.
--------------------------------------------------------------------------------
Call Calling Called Remote Seconds Seconds Seconds
Charges
Type Number Number Name Used Left Idle Units/Currency
--------------------------------------------------------------------------------
In 6105 6106 Prasit 31 90 29
--------------------------------------------------------------------------------
Spicey#
*Mar 1 01:01:14.547: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected
from 6105 Prasit, call lasted 122 seconds
*Mar 1 01:01:14.663: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
*Mar 1 01:01:15.663: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:1, changed state to down
Prasit#show frame-relay map
Serial1.1 (up): point-to-point dlci, dlci 150(0x96,0x2460), broadcast
status defined, active
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/40 ms
Prasit#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
I 3.0.0.0/8 [100/10476] via 4.0.1.1, 00:00:55, Serial1.1
4.0.0.0/24 is subnetted, 1 subnets
C 4.0.1.0 is directly connected, Serial1.1
124.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
S 124.124.124.0/24 [250/0] via 3.1.6.1
I 124.0.0.0/8 [100/8576] via 4.0.1.1, 00:00:55, Serial1.1
123.0.0.0/24 is subnetted, 1 subnets
C 123.123.123.0 is directly connected, Ethernet0
I 122.0.0.0/8 [100/10576] via 4.0.1.1, 00:00:55, Serial1.1
The serial line goes down.
Prasit#
*Mar 1 01:23:50.531: %LINK-3-UPDOWN: Interface Serial1, changed state to down
*Mar 1 01:23:51.531: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Serial1, changed state to down
*Mar 1 01:23:53.775: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
*Mar 1 01:23:53.791: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
*Mar 1 01:23:53.827: %LINK-3-UPDOWN: Interface BRI0, changed state to up
*Mar 1 01:23:57.931: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 64 changed to up
Prasit#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF,IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
3.0.0.0/24 is subnetted, 1 subnets
C 3.1.6.0 is directly connected, BRI0
124.0.0.0/24 is subnetted, 1 subnets
S 124.124.124.0 [250/0] via 3.1.6.1
123.0.0.0/24 is subnetted, 1 subnets
C 123.123.123.0 is directly connected, Ethernet0
Prasit#show isdn status
Global ISDN Switchtype = basic-net3
ISDN BRI0 interface
dsl 0, interface ISDN Switchtype = basic-net3
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 64, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x80000003
Total Allocated ISDN CCBs = 0
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!
*Mar 1 01:25:47.383: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 36/36/36 ms
Prasit#
*Mar 1 01:25:48.475: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:1, changed state to up
Prasit#
*Mar 1 01:25:53.407: %ISDN-6-CONNECT: Interface BRI0:1 is now connected
to 6106 Spicey
Prasit#show isdn status
Global ISDN Switchtype = basic-net3
ISDN BRI0 interface
dsl 0, interface ISDN Switchtype = basic-net3
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 64, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
1 Active Layer 3 Call(s)
CCB:callid=8003, sapi=0, ces=1, B-chan=1, calltype=DATA
Active dsl 0 CCBs = 1
The Free Channel Mask: 0x80000002
Total Allocated ISDN CCBs = 1
Prasit#show isdn active
--------------------------------------------------------------------------------
ISDN ACTIVE CALLS
--------------------------------------------------------------------------------
Call Calling Called Remote Seconds Seconds Seconds Charges
Type Number Number Name Used Left Idle Units/Currency
--------------------------------------------------------------------------------
Out 6106 Spicey 21 100 19 0
--------------------------------------------------------------------------------
Prasit#
*Mar 1 01:27:49.027: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected
from 6106 Spicey, call lasted 121 seconds
*Mar 1 01:27:49.131: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
*Mar 1 01:27:50.131: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:1, changed state to down
*Mar 1 01:28:09.215: %LINK-3-UPDOWN: Interface Serial1, changed state to up
*Mar 1 01:28:10.215: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Serial1, changed state to up
*Mar 1 01:28:30.043: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BRI0,
TEI 64 changed to down
*Mar 1 01:28:30.047: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI
64 changed to down
*Mar 1 01:28:30.371: %LINK-5-CHANGED: Interface BRI0, changed state to standby mode
*Mar 1 01:28:30.387: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
*Mar 1 01:28:30.403: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
Prasit#
The serial connection is back again..
Prasit#show isdn status
Global ISDN Switchtype = basic-net3
ISDN BRI0 interface
dsl 0, interface ISDN Switchtype = basic-net3
Layer 1 Status:
DEACTIVATED
Layer 2 Status:
Layer 2 NOT Activated
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x80000003
Total Allocated ISDN CCBs = 0
Prasit#show interface bri 0
BRI0 is standby mode, line protocol is down
Hardware is BRI
Internet address is 3.1.6.2/24
MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, loopback not set
Last input 00:01:00, output 00:01:00, output hang never
Last clearing of "show interface" counters 01:28:16
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/16 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
128 packets input, 601 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
132 packets output, 687 bytes, 0 underruns
0 output errors, 0 collisions, 10 interface resets
0 output buffer failures, 0 output buffers swapped out
14 carrier transitions
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Here is an example of a hub and spoke per DLCI backup configuration. The
spoke routers are calling the hub router. As you can see, we allow only one B
channel per side by using the max-link option on the dialer pool on the hub
side.
Note:?Backup load is not supported on subinterfaces. As we do not
track traffic levels on subinterfaces, no load is calculated.
|
Aton |
Aton#show running-config
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Aton
!
!
username Spicey password 0 cisco
!
isdn switch-type basic-net3
!
!
!
interface Ethernet0
ip address 122.122.122.1 255.255.255.0
!
!
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 point-to-point
ip address 3.1.3.3 255.255.255.0
backup delay 5 10
backup interface BRI0
frame-relay interface-dlci 160
!
interface BRI0
ip address 155.155.155.3 255.255.255.0
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer map ip 155.155.155.2 name Spicey broadcast 6106
dialer-group 1
isdn switch-type basic-net3
ppp authentication chap
!
router igrp 2
network 3.0.0.0
network 122.0.0.0
network 155.155.0.0
!
ip route 124.124.124.0 255.255.255.0 155.155.155.2 250
!
access-list 101 deny igrp any any
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Spicey |
Spicey#show running-config
Building configuration...
Current configuration : 1887 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Spicey
!
username Prasit password 0 cisco
username Aton password 0 cisco
!
isdn switch-type basic-net3
!
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
!
interface Serial0.1 point-to-point
ip address 4.0.1.1 255.255.255.0
frame-relay interface-dlci 140
!
interface Serial0.2 point-to-point
ip address 3.1.3.1 255.255.255.0
frame-relay interface-dlci 130
!
interface BRI0
no ip address
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool-member 2 max-link 1
dialer pool-member 1 max-link 1
isdn switch-type basic-net3
no peer default ip address
no cdp enable
ppp authentication chap
!
interface Dialer1
ip address 160.160.160.1 255.255.255.0
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool 1
dialer remote-name Prasit
dialer-group 1
ppp authentication chap
!
interface Dialer2
ip address 155.155.155.2 255.255.255.0
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer pool 2
dialer remote-name Aton
dialer-group 1
ppp authentication chap
!
router igrp 2
network 3.0.0.0
network 4.0.0.0
network 124.0.0.0
network 155.155.0.0
network 160.160.0.0
!
access-list 101 deny igrp any any
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
Current configuration : 1267 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Prasit
!
username Spicey password 0 cisco
!
isdn switch-type basic-net3
!
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
no ip address
encapsulation frame-relay
!
interface Serial1.1 point-to-point
backup delay 5 10
backup interface BRI0
ip address 4.0.1.2 255.255.255.0
frame-relay interface-dlci 150
!
interface BRI0
ip address 160.160.160.2 255.255.255.0
encapsulation ppp
dialer map ip 160.160.160.1 name Spicey broadcast 6106
dialer-group 1
isdn switch-type basic-net3
ppp authentication chap
!
router igrp 2
network 4.0.0.0
network 123.0.0.0
network 160.160.0.0
!
ip route 124.124.124.0 255.255.255.0 160.160.160.1 250
!
access-list 101 deny igrp any any
access-list 101 permit ip any any
dialer-list 1 protocol ip list 101
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
-
show frame-relay map
-
show ip route
-
show frame map
-
show frame-relay pvc
Aton#show frame-relay map
Serial1.1 (up): point-to-point dlci, dlci 160(0xA0,0x2800), broadcast
status defined, active
Aton#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Aton#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR, P - periodic downloaded static route
T - traffic engineered route
Gateway of last resort is not set
I 155.155.0.0/16 [100/182571] via 3.1.3.1, Serial1.1
3.0.0.0/24 is subnetted, 1 subnets
C 3.1.3.0 is directly connected, Serial1.1
I 4.0.0.0/8 [100/10476] via 3.1.3.1, Serial1.1
I 160.160.0.0/16 [100/182571] via 3.1.3.1, Serial1.1
124.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
S 124.124.124.0/24 [250/0] via 155.155.155.2
I 124.0.0.0/8 [100/8576] via 3.1.3.1, Serial1.1
I 123.0.0.0/8 [100/10576] via 3.1.3.1, Serial1.1
122.0.0.0/24 is subnetted, 1 subnets
C 122.122.122.0 is directly connected, Ethernet0
Aton#
Serial 1 is going down.
Aton#
01:16:33: %LINK-3-UPDOWN: Interface Serial1, changed state to down
01:16:34: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1,
changed state to down
01:16:37: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
01:16:37: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
01:16:37: %LINK-3-UPDOWN: Interface BRI0, changed state to up
01:16:41: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 64 changed to up
Aton#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR, P - periodic downloaded static route
T - traffic engineered route
Gateway of last resort is not set
155.155.0.0/24 is subnetted, 1 subnets
C 155.155.155.0 is directly connected, BRI0
124.0.0.0/24 is subnetted, 1 subnets
S 124.124.124.0 [250/0] via 155.155.155.2
122.0.0.0/24 is subnetted, 1 subnets
C 122.122.122.0 is directly connected, Ethernet0
Aton#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
01:21:33: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 36/36/36 ms
Aton#
01:21:34: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1,
changed state to up
01:21:39: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 6106
Spicey
Aton#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/123/296 ms
Aton#
Serial 1 becomes active again
Aton#
01:24:02: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 6106
Spicey, call lasted 149 seconds
01:24:02: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
01:24:03: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1,
changed state to down
Aton#show frame map
Serial1.1 (down): point-to-point dlci, dlci 160(0xA0,0x2800), broadcast
status deleted
Aton#
01:26:35: %LINK-3-UPDOWN: Interface Serial1, changed state to up
01:26:36: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1,
changed state to up
01:26:56: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BRI0, TEI 64 changed
to down
01:26:56: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI 64 changed
to down
01:26:56: %LINK-5-CHANGED: Interface BRI0, changed state to standby mode
01:26:56: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
01:26:56: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
Aton#show frame map
Serial1.1 (up): point-to-point dlci, dlci 160(0xA0,0x2800), broadcast
status defined, active
Aton#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Aton#ping 124.124.124.1
Aton#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 160, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial1.1
input pkts 60 output pkts 69 in bytes 9694
out bytes 10811 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 44 out bcast bytes 7565
pvc create time 01:28:35, last time pvc status changed 00:02:19
Spicey#show frame-relay map
Serial0.1 (up): point-to-point dlci, dlci 140(0x8C,0x20C0), broadcast
status defined, active
Serial0.2 (up): point-to-point dlci, dlci 130(0x82,0x2020), broadcast
status defined, active
Spicey#ping 122.122.122.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 122.122.122.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/35/36 ms
Spicey#ping 123.123.123.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 123.123.123.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Spicey#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
155.155.0.0/24 is subnetted, 1 subnets
C 155.155.155.0 is directly connected, Dialer2
3.0.0.0/24 is subnetted, 1 subnets
C 3.1.3.0 is directly connected, Serial0.2
4.0.0.0/24 is subnetted, 1 subnets
C 4.0.1.0 is directly connected, Serial0.1
160.160.0.0/24 is subnetted, 1 subnets
C 160.160.160.0 is directly connected, Dialer1
124.0.0.0/24 is subnetted, 1 subnets
C 124.124.124.0 is directly connected, Ethernet0
I 123.0.0.0/8 [100/8576] via 4.0.1.2, 00:00:55, Serial0.1
I 122.0.0.0/8 [100/8576] via 3.1.3.3, 00:00:35, Serial0.2
Both serial lines from the calling sides are going down.
Spicey#
*Mar 1 01:21:30.171: %LINK-3-UPDOWN: Interface BRI0:1, changed state toup
*Mar 1 01:21:30.627: %DIALER-6-BIND: Interface BR0:1 bound to profile Di2
*Mar 1 01:21:31.647: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:1, changed state to up
*Mar 1 01:21:36.191: %ISDN-6-CONNECT: Interface BRI0:1 is now connected
to 6104 Aton
*Mar 1 01:21:40.923: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up
*Mar 1 01:21:41.359: %DIALER-6-BIND: Interface BR0:2 bound to profile Di1
*Mar 1 01:21:42.383: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:2, changed state to up
*Mar 1 01:21:46.943: %ISDN-6-CONNECT: Interface BRI0:2 is now connected
to 6105 Prasit
*Mar 1 01:23:59.819: %DIALER-6-UNBIND: Interface BR0:1 unbound from
profile Di2
*Mar 1 01:23:59.831: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected
from 6104 Aton, call lasted 149 seconds
*Mar 1 01:23:59.927: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
*Mar 1 01:24:00.923: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:1, changed state to down
*Mar 1 01:24:03.015: %DIALER-6-UNBIND: Interface BR0:2 unbound from
profile Di1
*Mar 1 01:24:03.023: %ISDN-6-DISCONNECT: Interface BRI0:2 disconnected
from 6105 Prasit, call lasted 142 seconds
*Mar 1 01:24:03.107: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
*Mar 1 01:24:04.107: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:2, changed state to down
Spicey#show frame map
Serial0.1 (down): point-to-point dlci, dlci 140(0x8C,0x20C0), broadcast
status defined, inactive
Serial0.2 (down): point-to-point dlci, dlci 130(0x82,0x2020), broadcast
status defined, inactive
Spicey#
Both serial lines are available again.
Spicey#show frame pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 2 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 130, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial0.2
input pkts 54 output pkts 61 in bytes 7014
out bytes 9975 dropped pkts 3 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 40 out bcast bytes 7803
pvc create time 01:28:14, last time pvc status changed 00:02:38
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial0.1
input pkts 56 output pkts 60 in bytes 7604
out bytes 10114 dropped pkts 2 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 39 out bcast bytes 7928
pvc create time 01:28:15, last time pvc status changed 00:02:29
Prasit#show frame-relay map
Serial1.1 (up): point-to-point dlci, dlci 150(0x96,0x2460), broadcast
status defined, active
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/40 ms
Prasit#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
I 155.155.0.0/16 [100/182571] via 4.0.1.1, 00:00:41, Serial1.1
I 3.0.0.0/8 [100/10476] via 4.0.1.1, 00:00:41, Serial1.1
4.0.0.0/24 is subnetted, 1 subnets
C 4.0.1.0 is directly connected, Serial1.1
I 160.160.0.0/16 [100/182571] via 4.0.1.1, 00:00:41, Serial1.1
124.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
S 124.124.124.0/24 [250/0] via 160.160.160.1
I 124.0.0.0/8 [100/8576] via 4.0.1.1, 00:00:41, Serial1.1
123.0.0.0/24 is subnetted, 1 subnets
C 123.123.123.0 is directly connected, Ethernet0
I 122.0.0.0/8 [100/10576] via 4.0.1.1, 00:00:42, Serial1.1
Prasit#
Serial 1 goes down.
Prasit#
*Mar 1 01:16:08.287: %LINK-3-UPDOWN: Interface Serial1, changed state to down
*Mar 1 01:16:09.287: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Serial1, changed state to down
*Mar 1 01:16:11.803: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
*Mar 1 01:16:11.819: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
*Mar 1 01:16:11.855: %LINK-3-UPDOWN: Interface BRI0, changed state to up
*Mar 1 01:16:15.967: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI
64 changed to up
Prasit#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
160.160.0.0/24 is subnetted, 1 subnets
C 160.160.160.0 is directly connected, BRI0
124.0.0.0/24 is subnetted, 1 subnets
S 124.124.124.0 [250/0] via 160.160.160.1
123.0.0.0/24 is subnetted, 1 subnets
C 123.123.123.0 is directly connected, Ethernet0
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
*Mar 1 01:21:38.967: %LINK-3-UPDOWN: Interface BRI0:1, changed state to
up.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 36/36/36 ms
Prasit#
*Mar 1 01:21:40.063: %LINEPROTO-5-UPDOWN: Line protocol on Interface
BRI0:1, changed state to up
*Mar 1 01:21:44.991: %ISDN-6-CONNECT: Interface BRI0:1 is now connected
to 6106 Spicey
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/36/36 ms
Prasit#
Serial 1 becomes active again.
Prasit#
*Mar 1 01:26:40.579: %LINK-3-UPDOWN: Interface Serial1, changed state to up
*Mar 1 01:26:41.579: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Serial1, changed state to up
*Mar 1 01:27:01.051: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BRI0,
TEI 64 changed to down
*Mar 1 01:27:01.055: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI
64 changed to down
*Mar 1 01:27:01.363: %LINK-5-CHANGED: Interface BRI0, changed state to standby mode
*Mar 1 01:27:01.379: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
*Mar 1 01:27:01.395: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
Prasit#show frame map
Serial1.1 (up): point-to-point dlci, dlci 150(0x96,0x2460), broadcast
status defined, active
Prasit#ping 124.124.124.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 124.124.124.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/116/432 ms
Prasit#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 150, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE =
Serial1.1
input pkts 58 output pkts 66 in bytes 9727
out bytes 10022 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 46 out bcast bytes 7942
pvc create time 01:27:37, last time pvc status changed 00:01:59
Frame Relay switching is a means of switching packets based on the data-link
connection identifier (DLCI). We can look on this as the Frame Relay equivalent
of a Media Access Control (MAC) address. You perform switching by configuring
your Cisco router or access server into a Frame Relay network. There are two
parts to a Frame Relay network:
Note:? In Cisco IOS Software release 12.1(2)T and later, the frame
route command has been replaced by the connect command.
Let's look at a sample configuration. In the configuration below, we are
using the router America as a Frame Relay switch. We are using Spicey as a hub
router and Prasit and Aton as spoke routers. We have connected them as follows:
-
Prasit serial 1 (s1) DTE is connected to America serial 1/4 (s1/4) DCE.
-
Spicey serial 0 (s0) DCE is connected to America serial 1/5 (s1/5) DTE.
-
Aton serial 1 (s1) DTE is connected to America serial 3/4 (s3/4) DCE.
This document is based on the following configuration:
|
Spicey |
Spicey#show running-config
Building configuration...
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Spicey
!
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
ip address 3.1.3.1 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 130
frame-relay interface-dlci 140
!
!
router rip
network 3.0.0.0
network 124.0.0.0
!
line con 0
!
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
Current configuration : 1499 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Prasit
!
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
ip address 3.1.3.2 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 150
!
!
router rip
network 3.0.0.0
network 123.0.0.0
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Aton |
Aton#show running-config
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Aton
!
!
!
interface Ethernet0
ip address 122.122.122.1 255.255.255.0
!
interface Serial1
ip address 3.1.3.3 255.255.255.0
encapsulation frame-relay
frame-relay interface-dlci 160
!
router rip
network 3.0.0.0
network 122.0.0.0
!
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
America |
america#show running-config
Building configuration...
Current configuration:
!
!
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname america
!
frame-relay switching
!
!
interface Serial1/4
description *** static DCE connection to s1 Prasit
no ip address
encapsulation frame-relay
clockrate 2000000
frame-relay intf-type dce
frame-relay route 150 interface Serial1/5 140
!
interface Serial1/5
description *** static DCE connection to s0 spicy
no ip address
encapsulation frame-relay
bandwidth 1000000
tx-queue-limit 100
frame-relay intf-type dce
frame-relay route 130 interface Serial3/4 160
frame-relay route 140 interface Serial1/4 150
transmitter-delay 10
!
interface Serial3/4
description *** static DCE connection to s1 Aton
encapsulation frame-relay
no ip mroute-cache
clockrate 2000000
frame-relay intf-type dce
frame-relay route 160 interface Serial1/5 130
! |
Use the following show commands to test that your network is operating
properly:
-
show frame-relay map
-
show frame-relay pvc
The output shown below is a result of entering these commands on the devices
we are using in this sample configuration.
Spicey#show frame-relay map
Serial0 (up): ip 3.1.3.2 dlci 140(0x8C,0x20C0), dynamic,
broadcast,, status defined, active
Serial0 (up): ip 3.1.3.3 dlci 130(0x82,0x2020), dynamic,
broadcast,, status defined, active
Spicey#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 2 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 130, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 32 output pkts 40 in bytes 3370
out bytes 3928 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 30 out bcast bytes 2888
pvc create time 00:15:46, last time pvc status changed 00:10:42
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 282 output pkts 291 in bytes 25070
out bytes 27876 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 223 out bcast bytes 20884
pvc create time 02:28:36, last time pvc status changed 02:25:14
Prasit#show frame-relay map
Serial1 (up): ip 3.1.3.1 dlci 150(0x96,0x2460), dynamic,
broadcast,, status defined, active
Prasit#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0
DLCI = 150, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1
input pkts 311 output pkts 233 in bytes 28562
out bytes 22648 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 162 out bcast bytes 15748
pvc create time 02:31:39, last time pvc status changed 02:25:14
Aton#show frame-relay map
Serial1 (up): ip 3.1.3.1 dlci 160(0xA0,0x2800), dynamic, broadcast, status defined, active
Aton#show frame-relay pvc
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 160, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial
input pkts 35 output pkts 32 in bytes 3758
out bytes 3366 dropped pkts 0 in FECN pkt 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 27 out bcast bytes 2846
pvc create time 00:10:53, last time pvc status changed 00:10:53
Data-link connection identifier (DLCI) prioritization is the process whereby
different traffic types are placed upon separate DLCIs so that a Frame Relay
network can provide a different committed information rate for each traffic
type. It can be used in conjunction with either custom queuing or priority
queuing to provide bandwidth management control over the access link to the
Frame Relay network. In addition, some Frame Relay service providers and Frame
Relay switches (such as the Stratacom Internetwork Packet Exchange [IPX], IGX
and BPX or AXIS switches) actually provide prioritization within the Frame Relay
cloud based on this priority setting.
When implementing DLCI prioritization, please note the following points:
-
If a secondary DLCI goes down, you lose traffic destined for that queue only.
-
If you lose the primary DLCI, the subinterface goes down and you lose all
traffic.
In order to use this setup, you need to have four DLCIs for the side that
will use the DLCI prioritization. In this example, we have configured Spicey for
priority queueing as follows:
-
Ping is in the high-priority queue.
-
Telnet is in the medium-priority queue.
-
File Transfer Protocol (FTP) is in the normal-priority queue.
-
All other IP traffic is in the low-priority queue.
Note:?Make sure you configure the DLCIs to correspond with the
priority list, or the system will not use the correct queue.
|
Spicey |
Spicey#show running-config
Building configuration...
Current configuration : 1955 bytes
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname Spicey
!
!
interface Ethernet0
ip address 124.124.124.1 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
priority-group 1
!
interface Serial0.1 point-to-point
ip address 4.0.1.1 255.255.255.0
frame-relay priority-dlci-group 1 140 180 190 200
frame-relay interface-dlci 140
!
router igrp 2
network 4.0.0.0
network 124.0.0.0
!
access-list 102 permit icmp any any
priority-list 1 protocol ip high list 102
priority-list 1 protocol ip medium tcp telnet
priority-list 1 protocol ip normal tcp ftp
priority-list 1 protocol ip low
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
|
Prasit |
Prasit#show running-config
Building configuration...
!
version 12.1
service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname Prasit
!
!
!
interface Ethernet0
ip address 123.123.123.1 255.255.255.0
!
interface Serial1
ip address 4.0.1.2 255.255.255.0
encapsulation frame-relay
!
router igrp 2
network 4.0.0.0
network 123.0.0.0
!
line con 0
exec-timeout 0 0
transport input none
line aux 0
line vty 0 4
login
!
end |
Use the following show and debug commands to test that your
network is operating properly. Before issuing debug commands, please see
Important Information on Debug
Commands.
-
show frame-relay pvc
-
show frame-relay map
-
show queueing priority
-
debug priority
The output shown below is a result of entering these commands on the devices
we are using in this sample configuration.
Spicey#show frame-relay pvc
PVC Statistics for interface Serial0 (Frame Relay DTE)
Active Inactive Deleted Static
Local 4 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 140, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.1
input pkts 106 output pkts 15 in bytes 6801
out bytes 1560 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
pvc create time 00:29:22, last time pvc status changed 00:20:37
Priority DLCI Group 1, DLCI 140 (HIGH), DLCI 180 (MEDIUM)
DLCI 190 (NORMAL), DLCI 200 (LOW)
DLCI = 180, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.1
input pkts 0 output pkts 51 in bytes 0
out bytes 2434 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0
pvc create time 00:29:23, last time pvc status changed 00:14:48
DLCI = 190, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.1
input pkts 0 output pkts 13 in bytes 0
out bytes 3653 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 13 out bcast bytes 3653
pvc create time 00:29:23, last time pvc status changed 00:14:28
DLCI = 200, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0.1
input pkts 0 output pkts 42 in bytes 0
out bytes 2554 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 10 out bcast bytes 500
pvc create time 00:29:24, last time pvc status changed 00:14:09
Spicey#show frame-relay map
Serial0.1 (up): point-to-point dlci, dlci 140(0x8C,0x20C0), broadcast
status defined, active
Priority DLCI Group 1, DLCI 140 (HIGH), DLCI 180 (MEDIUM)
DLCI 190 (NORMAL), DLCI 200 (LOW)
Spicey#show queueing priority
Current priority queue configuration:
List Queue Args
1 high protocol ip list 102
1 medium protocol ip tcp port telnet
1 normal protocol ip tcp port ftp
1 low protocol ip
To verify the priority queue, use the debug priority command.
Spicey#debug priority
Priority output queueing debugging is on
Spicey#ping 123.123.123.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 123.123.123.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 44/45/48 ms
Spicey#
*Mar 1 00:32:30.391: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.395: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.399: PQ: Serial0 output (Pk size/Q 104/0)
*Mar 1 00:32:30.439: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.443: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.447: PQ: Serial0 output (Pk size/Q 104/0)
*Mar 1 00:32:30.487: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.491: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.495: PQ: Serial0 output (Pk size/Q 104/0)
*Mar 1 00:32:30.535: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.539: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.543: PQ: Serial0 output (Pk size/Q 104/0)
*Mar 1 00:32:30.583: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.587: PQ: Serial0: ip (s=4.0.1.1, d=123.123.123.1) ->high
*Mar 1 00:32:30.587: PQ: Serial0 output (Pk size/Q 104/0)Spicey#
Spicey#telnet 123.123.123.1
Trying 123.123.123.1 ... Open
User Access Verification
Password:
*Mar 1 00:32:59.447: PQ: Serial0: ip (tcp 23) -> medium
*Mar 1 00:32:59.451: PQ: Serial0: ip (tcp 23) -> medium
*Mar 1 00:32:59.451: PQ: Serial0 output (Pk size/Q 48/1)
*Mar 1 00:32:59.475: PQ: Serial0: ip (tcp 23) -> medium
*Mar 1 00:32:59.479: PQ: Serial0: ip (tcp 23) -> medium
*Mar 1 00:32:59.483: PQ: Serial0 output (Pk size/Q 44/1)
*Mar 1 00:32:59.487: PQ: Serial0: ip (tcp 23) -> medium
*Mar 1 00:32:59.487: PQ: Serial0: ip (tcp 23) -> medium
*Mar 1 00:32:59.491: PQ: Serial0 output (Pk size/Q 53/1)
*Mar 1 00:32:59.495: PQ: Serial0: ip (tcp 23) -> medium
*Mar 1 00:32:59.499: PQ: Serial0: ip (tcp 23) -> medium
*Mar 1 00:32:59.499: PQ: Serial0 output (Pk size/Q 44/1)
*Mar 1 00:32:59.511: PQ: Serial0: ip (tcp 23) -&g |
