Etherchannel is also referred to as link aggregation which is used to bundle multiple physical Ethernet links interconnecting devices into a single logical communication channel with increased throughput.

After Etherchannel has been established, it creates a single logical interface that utilizes the bandwidth of all the member links in the bundle.  This allows traffic to be load balanced across the multiple member links to take advantage of the combined bandwidth.

Also if links in an Etherchannel bundle fail, traffic is spread out over the remaining up and active member links in the bundle without taking the logical interface down.



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