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CHAPTER
1-1
Cisco Catalyst 4900M Switch Installation Guide
78-18350-01
1
Product Overview
This chapter describes the Catalyst 4900M switch, as well as system features and
components.
This chapter contains these sections:
• Catalyst 4900M Switch Applications, page 1-1
• Catalyst 4900M Switch Software Features, page 1-6
• Hardware System Features, page 1-6
• Switch Components, page 1-7
Catalyst 4900M Switch Applications
The Catalyst 4900M switch (see Figure 1-1) is designed for top-of-rack server
aggregation. It simplifies the transition from 1 GB to 10 GB attached devices in
the data center. The Cisco Catalyst 4900M is a top of rack Ethernet switch
optimized for mixing 10/100/1000 and 10 Gigabit Ethernet access devices. It is a
fixed Cisco IOS based Layer 2+ switch with 8 fixed wire speed X2 ports on the
base unit with 2 optional half card slots. The half card slots can accommodate the
following cards in any combination:
• 20-port wirespeed10/100/1000 (RJ-45) half card
• 4-port wire speed 10GbE (X2) half card
• 8-port (2:1) 10GbE (X2) half card (Twin Gig compatible)