Name: Cisco 2950 - Catalyst Switch
Brand: Cisco
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CHAPTER

31-1

Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide

78-11380-10

Configuring EtherChannels

This chapter describes how to configure EtherChannel on the Layer 2 interfaces of a Catalyst 2950 or

Catalyst 2955 switch. EtherChannel provides fault-tolerant high-speed links between switches, routers,

and servers. You can use it to increase the bandwidth between the wiring closets and the data center, and

you can deploy it anywhere in the network where bottlenecks are likely to occur. EtherChannel provides

automatic recovery for the loss of a link by redistributing the load across the remaining links. If a link

fails, EtherChannel redirects traffic from the failed link to the remaining links in the channel without

intervention.

This chapter consists of these sections:

• Understanding EtherChannels, page 31-1

• Configuring EtherChannels, page 31-7

• Displaying EtherChannel, PAgP, and LACP Status, page 31-14

Note For complete syntax and usage information for the commands used in this chapter, refer to the command

reference for this release.

Understanding EtherChannels

An EtherChannel consists of individual Fast Ethernet or Gigabit Ethernet links bundled into a single

logical link as shown in Figure 31-1. The EtherChannel provides full-duplex bandwidth up to 800 Mbps

(Fast EtherChannel) or 2 Gbps (Gigabit EtherChannel) between your switch and another switch or host.

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Cisco 2950 - Catalyst Switch Specifications

General