Data Sheet
© 2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 3 of 19
Figure 5. 8-Port (2:1) 10GBASE-T RJ-45 Half Card
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(Capable of Operating at 1G/10G for Up to 100m on Cat6a/Cat7 Cable)
In addition to deployment flexibility, the half slots provide investment protection for further additions of Gigabit
Ethernet and 10 Gigabit Ethernet media.
Table 1 summarizes the features and benefits of the Cisco Catalyst 4900M.
Table 1. Features and Benefits
Feature Benefit
Outstanding Scalability
17.5 MB shared buffers Large buffers for microburst and high traffic control
Up to 320 Gbps and 250 mpps wire-speed performance with low latency Delay-sensitive traffic forwarded without interruption
Wire-speed uplinks Elimination of oversubscription bottlenecks between downlinks and
uplinks across the switch with any combination of half cards
Configuration Flexibility
Choice of Gigabit Ethernet and 10 Gigabit Ethernet interfaces Granular configuration options for all—Gigabit Ethernet to 10 Gigabit
Ethernet transition
Choice of copper or fiber 1G/10G Ethernet interfaces Mix and match 1G/10G RJ-45 and X2 line cards
Online insertion and removal of cards In-service line card changes
Cisco TwinGig Converter Module support* Gigabit Ethernet and 10 Gigabit Ethernet interface support on the same
card
Dual AC or DC power High availability for nonstop operation
Investment Protection
Modular half slots Migration to new media types through additional half cards
Field-replaceable power supplies and hot-swappable removable fan Extended longevity of hardware
Use of existing software Consistent operational model for all Cisco Catalyst 4900 Series Switches
* Supported only on 8-port (2:1) 10 Gigabit Ethernet (X2) half card.
One System, Many Configurations
The Cisco Catalyst 4900M can be configured to meet the needs of many types of top-of-rack deployments. Table 2
summarizes the configuration options.
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Available 1HCY10.
(2 pages)
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