C
HAPTER
28
| Link Aggregation Commands
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â—† A trunk formed with another switch using LACP will automatically be
assigned the next available port-channel ID.
â—† If the target switch has also enabled LACP on the connected ports, the
trunk will be activated automatically.
â—† If more than eight 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.
EXAMPLE
The following shows LACP enabled on ports 1-3. Because LACP has also
been enabled on the ports at the other end of the links, the show interfaces
status port-channel 1 command shows that Trunk1 has been established.
Console(config)#interface ethernet 1/1
Console(config-if)#lacp
Console(config-if)#interface ethernet 1/2
Console(config-if)#lacp
Console(config-if)#interface ethernet 1/3
Console(config-if)#lacp
Console(config-if)#end
Console#show interfaces status port-channel 1
Information of Trunk 1
Basic Information:
Port Type : 100TX
Mac Address : 12-34-12-34-12-3F
Configuration:
Name :
Port Admin : Up
Speed-duplex : Auto
Capabilities : 10half, 10full, 100half, 100full
Flow Control : Disabled
VLAN Trunking : Disabled
Port Security : Disabled
Max MAC Count : 0
Port Security Action : None
Current status:
Created By : LACP
Link Status : Up
Port Operation Status : Up
Operation speed-duplex : 100full
Flow control Type : None
Member Ports : Eth1/1, Eth1/2, Eth1/3,
Console#
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