Used Cisco 1548 Series - Micro Switches 10/100

Product Overview

The Cisco 1548 Series Micro Switches are affordable autosensing 10/100 Fast Ethernet switches for creating high-performance LANs in enterprise remote branch offices or in small, growing businesses. For customers whose bandwidth requirements have outgrown their legacy 10BaseT networks, the eight-port Cisco 1548M and Cisco 1548U switches offer dedicated 10/100 autosensing Fast Ethernet connections, ideal for aggregating workgroups or connecting Ethernet and Fast Ethernet desktops.

Figure 21-19: Cisco 1548 Series Micro Switch 10/100 Front View

Figure 21-20: Cisco 1548M Micro Switch 10/100 Rear View

Key Features and Benefits

The Cisco 1548 Series Micro Switches 10/100 provide dedicated 10/100 autosensing Fast Ethernet solutions for creating high-performance LANs at an affordable price.

Provides dedicated 10/100 autosensing LAN connectivity; ideal for price-sensitive customers looking for an ultra-low cost Fast Ethernet solution
Provides unmatched flexibility, ease-of-deployment and -use via features such as integrated stacking interconnections, auto-negotiation, easy stackability and auto-configuration/BootP
Allows easy management and reduces total cost of ownership via SNMP, RMON (4 groups), embedded HTTP server, CDP and "multifunction per port" LEDs for status
Offers an outstanding value at an ultra-low cost
Member of the Cisco Networked Office family of stackable products designed to provide complete solutions for small businesses and remote branch offices

Specifications

Hardware

**Table 21-192: Technical Specifications for Cisco 1548 Series**
Description	Specification
Ports/Connector Types	Eight workstation connectors: RJ-45 MDI-X shielded connectors Media supported: Category 5 UTP or Category 3 UTP (10BaseT only)
Performance	4 MB shared memory architecture shared by all ports Packet forwarding rate for 64-byte packets: 14,880 packets per second (pps) to 10 Mbps ports 148,800 pps to 100BaseT ports 4096 Media Access Control (MAC) addresses per system (Cisco1548M) 2048 Media Access Control (MAC) addresses per system (Cisco1548U-DS)
Management (Cisco 1548M model only)	SNMP Management Information Base (MIB) II, Bridge MIB, Ethernet MIB Min-RMON MIB (4 Groups - Statistics, History, Alarm, and Event) Cisco Discovery Protocol (CDP) supported
Indicator Panel LED Display	PWR: Indicates whether power is being supplied to switch Ports 1 to 8: Port status including link, activity, speed and full-/half-duplex operation
Connectors and Cabling	10BaseT ports: RJ-45 connectors; two-pair category 3, 4, or 5 unshielded twisted-pair (UTP) cabling 100BaseTX ports: RJ-45 connectors; two-pair Category 5 UTP cabling Management console port: RJ-45 connector (Cisco 1548M model only)
Shipping Contents	Cisco 1548U-DS or Cisco 1548M Micro Switch 10/100 U.S. power cord Stacking clip and accessories Management console cable (Cisco 1548M only) Product documentation Cisco ConfigMaker software (Cisco 1548M only)
Warranty	Limited lifetime warranty covers product`s return to factory for free repair. Power supply and fan covered for first five years of product ownership.

**Table 21-193: Power Requirements for Cisco 1548 Series**
Description	Specification
Power consumption	Nominal 20W
AC input voltage	100 to 127 VAC, 200 to 240 VAC

**Table 21-194: Physical and Environmental Specifications for Cisco 1548 Series**
Description	Specification
Operating temperature	32 to 104?F (0 to 40?C)
Operating humidity	10 to 85% noncondensing
Operating altitude	up to 9840 ft (3000 m)
Storage temperature	-40 to 149?F (-25 to 65?C)
Storage altitude	30,000 ft (9146 m)

**Table 21-195: Regulatory Approvals for Cisco 1548 Series**
Description	Specification
Standards conformance	IEEE 802.3 10BaseT IEEE 802.3u 100BaseTX IEEE 802.3x Full Duplex on 10BaseT and 100BaseTX ports IEEE 802.1d Spanning-Tree Protocol
Safety Specifications	UL 1950/CSA 22.2 No. 950 IEC 950/EN 60950
Electromagnetic Emissions Compliance	FCC Part 15 Class B EN 55022B Class B (CISPR22 Class B) VCCI Class B AS/NRZ 3548 Class B BCIQ Class B CE

The Cisco 1548 series Micro Switch 10/100 offers affordable autosensing 10/100 Fast Ethernet switches for creating high-performance LANs in enterprise remote offices or small and growing businesses. For customers whose bandwidth requirements have outgrown their legacy 10BaseT networks, these switches offer dedicated Fast Ethernet connections on all eight ports.

The Cisco 1548 series Micro Switch 10/100 product line includes two models, the unmanaged Cisco 1548U and the managed Cisco 1548M. Both models deliver low-cost, high-performance, dedicated 10- or 100-Mbps bandwidth to individual users or workgroup segments.

Where management is a requirement, the Cisco 1548M 10/100 delivers the most powerful and cost-effective managed 10/100 Fast Ethernet connectivity in its class. The Web-based management interface, now common to most Cisco stackable LAN products, offers a consistent and integrated management interface across an entire family of LAN products. This managed switch supports a wide range of management protocols and Cisco IOS® technologies, including Simple Network Management Protocol (SNMP), four groups of Remote Monitoring (RMON), Switched Port Analyzer (SPAN), Cisco Discovery Protocol (CDP), port-based virtual LANs (VLANs), and the traditional Cisco command-line interface (CLI).

Applications

High-Performance Desktop Connectivity

Both products in the Cisco 1548 series Micro Switch product line can be deployed as high-performance 10/100 Fast Ethernet desktop solutions. Each port delivers up to 200-Mbps throughput when operating in full duplex. Autosensing and autonegotiation features correctly set the communications speed and duplex mode between connected devices. Users can deploy the Cisco 1548 Micro Switch 10/100 as either an extremely low-cost Fast Ethernet LAN solution or as an affordably priced, managed solution.

Figure 1: The Cisco 1548 Series Micro Switch 10/100 for High-Performance Desktop Connectivity

LAN Aggregration in a Small Office/Workgroup

The Cisco 1548 series Micro Switch 10/100 also can be used to aggregate other networking devices in the workgroup, including Cisco 1538 series Micro Hub 10/100. As an aggregator, each switch port segments the LAN, reducing collisions between workgroups. VLAN functionality on the Cisco 1548M model creates additional security, broadcast control, and increased network performance.

Figure 2: The Cisco 1548 Series Micro Switch 10/100 as a Workgroup Aggregator

Outstanding Performance	Eight 10/100 Fast Ethernet ports	Delivers performance where required, such as server farms, power workgroups, and individual users
	Eight 10/100 Fast Ethernet ports	Preserves investment in legacy 10BaseT equipment, such as NICs, hubs, and switches
	Autosensing on all ports	Detects the speed of the attached device and automatically configures the port for 10- or 100-Mbps. Eases deployment of the switch in mixed 10- and 100BaseT environments
	Autonegotiation on all ports	Automatically sets half- or full-duplex transmission mode to optimize throughput
	200-Mbps peak aggregate bandwidth per port (full duplex)	For those customers who anticipate the use of bandwidth-intensive applications and want a migration path from legacy 10BaseT networks
Management Option	Optional managed model (Cisco 1548M)	Provides configuration and management functionality for the switch
	SNMP and Telnet interface support	Delivers comprehensive in-band management
	CLI-based management console	Provides detailed out-of-band management
	CLI-based management console	Uses the same management interface as Cisco routers
	Built-in HTTP Server	Allows users to manage the switch from anywhere on the Internet through a standard browser
	Web-based management interface common to most Cisco LAN stackable products	Single, consistent design simplifies management complexity
	Telnet support	Allows menu-based management by terminal emulation software over the network
	CDP	Enables a CiscoView network management station to automatically discover the hub in a network topology without user intervention
	Four groups of embedded RMON (history, statistics, alarms, and events)	Provides enhanced manageability, network monitoring, and traffic analysis
	Switched Port Analyzer (SPAN)	Offers complete monitoring of a port from a single network analyzer or RMON probe attached to a switch port
	Multifunction per-port LEDs for port status, 10BaseT/100BaseT speed indication, half-/full-duplex indication, as well as hub-level status LEDs for system status and power	Provides comprehensive and convenient visual management of the hub
	Autoconfiguration/BOOTP	Eases deployment of switches in the network by automatically configuring multiple switches across a network via a boot server
	TFTP	Reduces the cost of administering software upgrades by downloading from a centralized location
Warranty	Limited lifetime warranty	Backed by award winning Cisco technical support and the technology leadership that extends the reach of networks worldwide