Once a port channel has established, it is important to check that it is operating optimally. The command show etherchannel summary provides a summary of configured port channels on the switch along with its status.
Status Code
Description
U
The Etherchannel is up and working correctly
D
The Etherchannel is down and not working
M
The Etherchannel has succesfully as established a link using at least one member, however the minimum number of links required as configured by the user on the switch has not been met. This is configured using the command port-channel min-links X in interface configuration mode
S
The port channel is configured on a Layer 2 level (access or trunk)
R
The port-channel is configured on a Layer 3 level
Status codes of an Etherchannel
Status Code
Description
P
The member interface is actively participating in the Etherchannel
H
The port channel is configured with the maximum number of active members. This member is not operating and forwarding traffic but is in a hot standby state ready to take over if an interface fails.
I
The member interface has not picked up on any LACP traffic and is operating individually.
w
The interface is waiting for a packet to arrive from its neighbour to ensure the link is still alive.
s
This member interface is in a suspended state
r
The switch module associated with the member interface has been removed.
Status codes of a member interface on a Etherchannel
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