With the command
lacp-cfg-det-dis we disable the check for this flag combination and let the LACP use its timers to detect configuration change.
If you do not use the command and bring a member of a LACP bundle back up the entire group goes down. This symptom may have occurred while bringing themember port of lag down.Thishas happenedbetween Cisco 6509 and NetIron XMR/MLX/CES/CER for instance.
lacp-cfg-det-dis disables detecting remote end LACP config removal (ignore the PDU with a special pattern sent by our devices upon LACP config removal). By default this is ON.