Concept Guide

Important Points about Shared LAG State Tracking
The following is more information about shared LAG state tracking.
• This feature is available for static and dynamic LAGs.
• Only a LAG can be a member of a failover group.
• You can congure shared LAG state tracking on one side of a link or on both sides.
• If a LAG that is part of a failover group is deleted, the failover group is deleted.
• If a LAG moves to the Down state due to this feature, its members may still be in the Up state.
LACP Basic Conguration Example
The screenshots in this section are based on the following example topology. Two routers are named ALPHA and BRAVO, and their
hostname prompts reect those names.
Figure 67. LACP Basic Conguration Example
Congure a LAG on ALPHA
The following example creates a LAG on ALPHA.
Example of Conguring a LAG
Alpha(conf)#interface port-channel 10
Alpha(conf-if-po-10)#no ip address
Alpha(conf-if-po-10)#switchport
Alpha(conf-if-po-10)#no shutdown
Alpha(conf-if-po-10)#show config
!
interface Port-channel 10
no ip address
switchport
no shutdown
!
Alpha(conf-if-po-10)#
Example of Viewing a LAG Port Conguration
The following example inspects a LAG port conguration on ALPHA.
Alpha#sh int TenGigabitEthernet 2/31
TenGigabitEthernet 2/31 is up, line protocol is up
540
Link Aggregation Control Protocol (LACP)