EtherChannel trunking

Trunks are a logical group of interfaces

To get the security of failover or the throughput that multiple interfaces working as one interface can provide, you can group up to four Ethernet interfaces. You group them into a logical interface unit known as a trunk. A trunk is composed of links, each of which is an interface. Commands that work on physical interfaces also work on trunks, except that the ifstat command returns limited trunk information.

Synonyms for trunks

Trunks are also referred to by the following terms:

This document uses the term trunk.

Interfaces before trunking

The following figure shows four separate interfaces, e3a, e3b, e3c, and e3d, before trunking.

Interfaces after trunking

The following figure shows the four interfaces after trunking into a multiple-mode trunk called Trunk1.


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Part No. 210-02334
File: net6.htm
Last updated: 02/24/99 12:16:03