Monitoring And Debugging Lacp - Dell C9000 Series Networking Configuration Manual

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timeout value to be 30 seconds. Invoking the longer timeout might prevent the LAG from flapping if the

remote system is up but temporarily unable to transmit PDUs due to a system interruption.

The 30-second timeout is available for dynamic LAG interfaces only. You can enter the lacp

long-timeout command for static LAGs, but it has no effect.

To configure LACP long timeout, use the following command.

Set the LACP timeout value to 30 seconds.

CONFIG-INT-PO mode

lacp long-timeout

Example of the lacp long-timeout and show lacp Commands

Dell(conf)# interface port-channel 32

Dell(conf-if-po-32)#no shutdown

Dell(conf-if-po-32)#switchport

Dell(conf-if-po-32)#lacp long-timeout

Dell(conf-if-po-32)#end

Dell# show lacp 32

Port-channel 32 admin up, oper up, mode lacp

Actor System ID: Priority 32768, Address 0001.e800.a12b

Partner System ID: Priority 32768, Address 0001.e801.45a5

Actor Admin Key 1, Oper Key 1, Partner Oper Key 1

LACP LAG 1 is an aggregatable link

A - Active LACP, B - Passive LACP, C - Short Timeout, D - Long Timeout

E - Aggregatable Link, F - Individual Link, G - IN_SYNC, H - OUT_OF_SYNC

I - Collection enabled, J - Collection disabled, K - Distribution enabled L -

Distribution disabled,

M - Partner Defaulted, N - Partner Non-defaulted, O - Receiver is in expired

P - Receiver is not in expired state

Port Te 10/6 is enabled, LACP is enabled and mode is lacp

Actor Admin: State ADEHJLMP Key 1 Priority 128

To view the PDU exchanges and the timeout value, use the debug lacp command. For more information,

Monitoring and Debugging

Monitoring and Debugging LACP

The system log (syslog) records faulty LACP actions.

To debug LACP, use the following command.

Debug LACP, including configuration and events.

Link Aggregation Control Protocol (LACP)