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CHAPTER

40-1

Catalyst 3750-X and 3560-X Switch Software Configuration Guide

OL-21521-01

Configuring EtherChannels and Link-State

Tracking

This chapter describes how to configure EtherChannels on Layer 2 and Layer 3 ports on the

Catalyst 3750-X or 3560-X switch. EtherChannel provides f

ault-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.

Note Layer 3 EtherChannels are not supported on switches running the LAN base feature set.

This chapter also describes how to configure link-state tracking.

Unless otherwise noted, the term sw

itch refers to a Catalyst 3750-X or 3560-X standalone switch and to

a Catalyst 3750-X switch stack.

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

reference for this release.

• Understanding EtherChannels, page 40-1

• Configuring EtherChannels, page 40-11

• Displaying EtherChannel, PAgP, and LACP Status, page 40-22

• Understanding Link-State Tracking, page 40-23

• Configuring Link-State Tracking, page 40-25

Understanding EtherChannels

• EtherChannel Overview, page 40-2

• Port-Channel Interfaces, page 40-4

• Port Aggregation Protocol, page 40-5

• Link Aggregation Control Protocol, page 40-7

• EtherChannel On Mode, page 40-8

Cisco Catalyst 3750-X User Manual

Other manuals for Cisco Catalyst 3750-X