LAG interface states

The output from the CLI commands show lacp interfaces and show lacp interfaces multi-chassis display the following interface states:

Interface state Description

A - Active

An active LACP interface.

C - Collecting

Data frames are received through the aggregate link and sent onto the intended destination.

D - Distributing

Data frames are transmitted through the aggregate link to reach the intended destination.

F - Aggregable

The link can be used as part of an aggregate.

E - Default neighbor state

The link has the default state of the neighbor switch.

I - Individual

The link is used as an individual link.

L - Long-timeout

With the long timeout, an LACPDU is sent every 30 seconds. If no response comes from its partner after three LACPDUs are sent (90 seconds), a timeout event occurs. The LACP state machine then transitions to the appropriate state based on its current state.

N - InSync

The physical port is connected to the aggregate port that was last chosen by the logical election. The state variable selected is still true.

O - OutofSync

The hardware might be out of sync with the modified protocol information. If the hardware also has a status of collecting, do not transmit frames because they will be misdelivered.

P - Passive

The port participates in the protocol, as long as it has an active partner.

S - Short-timeout

In the short timeout configuration, an LACPDU is sent every second. If no response comes from its partner after three LACPDUs are sent, a timeout event occurs. The LACP state machine then transitions to the appropriate state based on its current state.

X - State m/c expired

The "current while" timer has expired. The "current while" timer then restarts with the short-timeout enabled.

The term State m/c refers to a state machine.