Cisco WS-C2950SX-48-SI Configuration Manual page 558

Backplane Channel Module
The Backplane Channel Module provides the following benefits in the default configuration mode:
• Full-mesh connection between all three switch engines
• Multilink load balancing between SE1 and SE2 and between SE2 and SE3
• Supervisor engine Gigabit Ethernet uplink connections
As an alternative, you can configure switch acceleration on the supervisor engine to get dual-link load
balancing between all three SEs.
If you want to keep the uplink connections, do not enable switch acceleration on the supervisor engine.
Note
You can insert or remove a Backplane Channel Module at any time. When you remove the Backplane
Channel Module, traffic might be interrupted for a short time. For minimal disruption, disable the
Backplane Channel Module for a short time, and then remove it.
You do not need to configure the Backplane Channel Module because it is enabled by default.
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide
36-4
Chapter 36 Configuring Switch Acceleration
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Release 8.1
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