timeout value to be 30 seconds. Invoking the longer timeout might prevent the LAG from flapping if theremote system is up but temporarily unable to transmit PDUs due to a system interruption.NOTE: The 30-second timeout is available for dynamic LAG interfaces only. You can enter the lacplong-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 modelacp long-timeoutExample of the lacp long-timeout and show lacp CommandsDell(conf)# interface port-channel 32Dell(conf-if-po-32)#no shutdownDell(conf-if-po-32)#switchportDell(conf-if-po-32)#lacp long-timeoutDell(conf-if-po-32)#endDell# show lacp 32Port-channel 32 admin up, oper up, mode lacpActor System ID: Priority 32768, Address 0001.e800.a12bPartner System ID: Priority 32768, Address 0001.e801.45a5Actor Admin Key 1, Oper Key 1, Partner Oper Key 1LACP LAG 1 is an aggregatable linkA - Active LACP, B - Passive LACP, C - Short Timeout, D - Long TimeoutE - Aggregatable Link, F - Individual Link, G - IN_SYNC, H - OUT_OF_SYNCI - Collection enabled, J - Collection disabled, K - Distribution enabled L -Distribution disabled,M - Partner Defaulted, N - Partner Non-defaulted, O - Receiver is in expiredstate,P - Receiver is not in expired statePort Te 10/6 is enabled, LACP is enabled and mode is lacpActor Admin: State ADEHJLMP Key 1 Priority 128To view the PDU exchanges and the timeout value, use the debug lacp command. For more information,refer to Monitoring and Debugging LACP.Monitoring and Debugging LACPThe system log (syslog) records faulty LACP actions.To debug LACP, use the following command.• Debug LACP, including configuration and events.EXEC mode[no] debug lacp [config | events | pdu [in | out | [interface [in | out]]]]Link Aggregation Control Protocol (LACP) 626
