3 Configuring the Switch

CLI – This example creates trunk 1 with ports 1 and 2. Just connect these ports to two static trunk ports on another switch to form a trunk.

Console(config)#interface

port-channel 1

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Console(config-if)#exit

 

 

Console(config)#interface

ethernet 1/1

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Console(config-if)#channel-group 1

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Console(config-if)#exit

 

 

Console(config)#interface

ethernet 1/2

 

Console(config-if)#channel-group 1

 

Console(config-if)#end

 

 

Console#show interfaces status port-channel 1

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Information of Trunk 1

 

 

Basic information:

 

 

Port type:

10G

 

Mac address:

00-30-F1-D4-73-A2

 

Configuration:

 

 

Name:

 

 

Port admin:

Up

 

Speed-duplex:

10G full

 

Capabilities:

 

 

Port security:

Disabled

 

Max MAC count:

0

 

Current status:

 

 

Created by:

User

 

Link status:

Up

 

Port operation status:

Up

 

Operation speed-duplex:

10G full

 

Member Ports: Eth1/1, Eth1/2,

Console#

Enabling LACP on Selected Ports

Command Usage

•To avoid creating a loop in the network, be sure you enable LACP before connecting the ports, and also disconnect the ports before disabling LACP.

•If the target switch has also enabled LACP on the connected ports, the trunk will be activated automatically.

•A trunk formed with another switch using LACP will automatically be assigned the next available trunk ID.

 

dynamically

 

enabled

 

}

active

backup

links

link

 

}

 

configured

 

members

•If more than four ports attached to the same target

switch have LACP enabled, the additional ports will be placed in standby mode, and will only be enabled if one of the active links fails.

•Trunks dynamically established through LACP will also be shown in the Member List on the Trunk Membership menu (see page 3-91).

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