The Catalyst WS-C2948G-L3switch provides non-blocking routing
and switching for IP, IPX, and IP multicast while also offering wire-speed Layer
2 switching for non-routable protocols such as NetBIOS and DECnet local-area
transport (LAT). This capability allows network managers to augment their multi-
protocol backbones with the Catalyst WS-C2948G-L3without having to build parallel
networks, as is often required with IP-only switches.
Catalyst WS-C2948G-L3Features
- Dedicated 48 ports of 10/100-Mbps Ethernet and two ports of 1000BaseX Gigabit
Ethernet with gigabit interface converter (GBIC) support; all ports with Layer
3 switching capability
- 10 Mpps Layer 3 switching and routing of IP, IPX switches, and IP multicast
- 22 Gbps non-blocking switch fabric
- High-performance CPU with Cisco IOS system software
- Quality of service (QoS)?multiple queues with weighted round robin (WRR)
scheduling
- Comprehensive management tools based on standard CiscoWorks2000 applications
- Optional redundant external power supply
Catalyst WS-C2948G-L3Product overview
The Catalyst WS-C2948G-L3is a fixed-configuration Layer 3 Ethernet switch with
48 RJ-45 10/100 ports and two Gigabit Ethernet uplink ports with modular GBIC
interfaces. The switch is ideal for backbone deployment in small to mid-sized
networks that require wire-speed Layer 3 performance but do not require the
high 10/100 Mbps Ethernet port counts or Gigabit Ethernet density offered in
the Catalyst 6000 and Catalyst 8500 series of switches.
Catalyst WS-C2948G-L3Overview
The Catalyst WS-C2948G-L3provides an aggregate throughput of more than 10 Mpps
for Layer 3 switching. These data rates apply not only to IP and IPX traffic
but also to IP multicast and bridged traffic and are a result of using high-speed
application-specific integrated circuit (ASIC) technology on each port to perform
true Layer 3 switching. The Catalyst WS-C2948G-L3supports a high-performance architecture
with 22 Gbps bandwidth. The switch fabric is capable of supporting all 48 10/100
ports and two Gigabit uplinks simultaneously at wire speed.
The Catalyst WS-C2948G-L3is housed in a 1.5 rack unit (RU) chassis and can be
provisioned with an optional external redundant power supply. It supports a
22 Gbps shared-memory, fully non-blocking switch fabric, high- performance RISC
processor that provides the routing intelligence and individual port-based ASICs
for the Layer 3 switching. The Catalyst WS-C2948G-L3uses Cisco Express Forwarding
(CEF), which has been developed for the Cisco 12000 series gigabit switch router
(GSR), the Catalyst 8500, and the Cisco 7500. This technology provides Layer
3 switching based on a topology map of the entire network that is distributed
to each port-based ASIC, allowing it to make autonomous switching decisions
without the involvement of a centralized CPU.
Cisco switch WS-C2948G
Cisco switch WS-C2948G-GE-TX
Cisco switch WS-C3750-48PS-E
