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Data Sheet

Cisco Catalyst 4948 Switch
High-Performance, Rack-Optimized Server Switching Product Overview
The Cisco Catalyst 4948 Switch is a wire-speed, low-latency, Layer 2 to 4, 1-rack-unit (1RU), fixed-configuration switch for rack-optimized server switching. Based on the proven Cisco Catalyst 4500 Series hardware and software architecture, the Cisco Catalyst 4948 offers exceptionalperformance and reliability for low-density, multilayer aggregation of high-performance servers and workstations. High performance and scalability of intelligent network services is made possible with dedicated specialized resources known as ternary content addressable memory (TCAM). Ample TCAM resources (64,000 entries) enable high feature capacity, providing wire-speed routing and switchingperformance with concurrent provisioning of services such as quality of service (QoS) and security, and helping ensure scalability for today's network requirements with ample room for future growth. The Cisco Catalyst 4948 offers 48 ports of wire-speed 10/100/1000BASE-T with four alternative wired ports that can accommodate optional 1000BASE-X Small Form-Factor Pluggable (SFP) optics.1 Exceptionalreliability and serviceability are delivered with optional internal AC or DC 1+1 hot-swappable power supplies and a hot-swappable fan tray with redundant fans (Figures 1 and 2).
Figure 1. Cisco Catalyst 4948 Switch
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Figure 2.

Rear View of Cisco Catalyst 4948 with Dual Redundant Power Supplies and Removable Fan Tray

1

The Cisco Catalyst 4948 has 52 physical switching ports (48 10/100/1000and 4 SFP) on the front panel. Up to 48 of these ports can be active at one time in any combination.
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Data Sheet

Features and Benefits
Wire-Speed Performance for 10/100/1000 Connectivity The Cisco Catalyst 4948 delivers wire-speed throughput with low latency for data-intensiveapplications, using a 96Gbps switching fabric with a forwarding rate of 72 million packets per second (mpps) in hardware for Layer 2 to 4 traffic. Switching performance remains high regardless of the number of route entries or Layer 3 and 4 services enabled. Hardware-based Cisco Express Forwarding routing architecture enables increased scalability and performance. Power Supply Redundancy for NonstopOperation The Cisco Catalyst 4948 provides reliability for critical applications, with 1+1 redundant hot-swappable internal AC or DC power supplies. The 1+1 power supply design provides A-to-B failover when power supplies are connected to different circuits. AC and DC power supplies can be mixed in the same unit for outstanding deployment flexibility. The Cisco Catalyst 4948 also has a hot-swappablefan tray with four redundant fans for additional serviceability and availability. Wire-Speed Performance for 10/100/1000 Connectivity The Cisco Catalyst 4948 delivers wire-speed throughput with low latency for data-intensive applications, using a 96Gbps switching fabric with a forwarding rate of 72 million packets per second (mpps) in hardware for Layer 2 to 4 traffic. Switching performance remainshigh regardless of the number of route entries or Layer 3 and 4 services enabled. Hardware-based Cisco Express Forwarding routing architecture enables increased scalability and performance. Power Supply Redundancy for Nonstop Operation The Cisco Catalyst 4948 provides reliability for critical applications, with 1+1 redundant hot-swappable internal AC or DC power supplies. The 1+1 power supplydesign provides A-to-B failover when power supplies are connected to different circuits. AC and DC power supplies can be mixed in the same unit for outstanding deployment flexibility. The Cisco Catalyst 4948 also has a hot-swappable fan tray with four redundant fans for additional serviceability and availability. Comprehensive Management The Cisco Catalyst 4948 includes a single, dedicated 10/100...