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4<br />

Command Line Interface<br />

Command Usage<br />

• When configuring static trunks, the switches must comply with the Cisco<br />

EtherChannel standard.<br />

• Use no channel-group to remove a port group from a trunk.<br />

• Use no interfaces port-channel to remove a trunk from the switch.<br />

Example<br />

The following example creates trunk 1 and then adds port 11:<br />

Console(config)#interface port-channel 1<br />

Console(config-if)#exit<br />

Console(config)#interface ethernet 1/11<br />

Console(config-if)#channel-group 1<br />

Console(config-if)#<br />

lacp<br />

This command enables 802.3ad Link Aggregation Control Protocol (LACP) for the<br />

current interface. Use the no form to disable it.<br />

Syntax<br />

[no] lacp<br />

Default Setting<br />

Disabled<br />

Command Mode<br />

Interface Configuration (Ethernet)<br />

Command Usage<br />

• The ports on both ends of an LACP trunk must be configured for full duplex,<br />

either by forced mode or auto-negotiation.<br />

• A trunk formed with another switch using LACP will automatically be assigned<br />

the next available port-channel ID.<br />

• If the target switch has also enabled LACP on the connected ports, the trunk<br />

will be activated automatically.<br />

• If more than eight ports attached to the same target switch have LACP<br />

enabled, the additional ports will be placed in standby mode, and will only be<br />

enabled if one of the active links fails.<br />

4-122

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