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4948 Quick Reference Matrix

Category: Tech Guides

Top-of-Rack and Aggregation Switches Quick Reference Guide

1000 ports
48 48 44 44 48 48
Uplink ports 4x 1G/10G SFP+ 4x 1G/10G SFP+ 4x shared 10/100/
4x shared 10/100/
2x X2 slots 2x X2 slots
L3 Features Basic L3 Full L3 Basic L3 Full L3 Basic L3 Full L3
IPv6 Capabilities Hardware Hardware Software Software Software Software
MAC Addresses 55,000 55,000 32,000 32,000 55,000 55,000
Switch Fabric 176Gbps 176Gbps 96Gbps 96Gbps 136Gbps 136Gbps


All Catalyst 4948 switches share these features:

  • Dual, hot-swappable power supplies
  • AC or DC power options
  • Large, shared packet buffer memory
  • Very low latency

ToR and Aggregation Switches: Catalyst 4948E Series

WS-C4948E-E & WS-C4948E-S
Built on the success of the original 4948, the 4948E is Cisco’s premier Top-of-Rack (ToR) platform offera a non-blocking architecture and introduces IPv6 support in hardware. Additionally, the 4948E also offers 4 x uplinks ports which may be used with either SFP+ (10GE) or SFP (GE) modules to provide the desired performance and resiliency. The 4948E continues the tradition of high availability introduced by the original 4948 by offering redundant AC or DC power supplies. The 4948E is offered with either basic L2/L3 (WS-C4948E-S) or advanced L3 (WS-C4948E-E) support.

Catalyst 4948 Series

WS-C4948-S, WS-C4948-E, WS-C4948-10GE-S & WS-C4948-10GE-E
The 4948 series is Cisco’s original Top-of-Rack platform, with a non-blocking switch fabric to support the most demanding forwarding environments and high density 10/100/1000 deployments. It should be noted that the entire 4948 & 4948E series is one of the few 1 RU systems that supports dual, fully redundant, hot swappable power supplies, making it a great choice for those requiring the highest degree of high availability in a compact 1 RU form factor. We are offering both the “-S” and -E” varieties of the 4948 (WS-C4948-S and WS-C4948-E) and 4948-10GE (WS-C4948-10GE-S and WS-C4948-10GE-E) to support either basic L2/L3 or advanced L3 environments, respectively. It should also be noted that the 4948 does not support IPv6 in hardware, this however does not present major concern in most environments. Overall, the 4948 is a great high performance switch and one of the few supporting truly redundant power supplies (in either AC or DC). For those customers requiring support for IPv6, please refer to the 4948E series products above.

Catalyst 4900M Series and 10GE modules

WS-C4900M, WS-X4904-10GE, WS-X4908-10GE, PWR-C49M-1000AC
The 4900M is a 2RU modular switch targeted for high performance 10GE Top-of-Rack (ToR) and aggregation deployments, offering full 10GE support or the flexibility of mixing and matching GE and 10GE interfaces through the addition of modular interface cards and adapters. 8 non-blocking 10GE ports are included in this chassis with two module slots to accommodate a variety of modules including a 1:1 4-port X2-based 10GE module (WS-X4904-10GE) and the 2:1 8-port 10GE module (WS-X4908-10GE), both of which are also on special. The 2:1 module supports the use of the TwingGig converter module (CVR-X2-SFP10G) for those needing the flexibility of both 10GE and GE or those seeking an easy transition from GE to 10GE. All X2-based 10GE ports support the use of the “OneX” converter module (CVR-X2-SFP10G) for those customers requiring SFP+ connectivity.

For more information, call 1-800-451-3407 or request a quote today.

*Please consult with your Curvature account representative and technical support personnel to determine suitability for non-ToR applications.

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