IPMP and standby failover
Noticed some strange behavior, and I've never seen this type of thing before. Then again, I never tested IPMP in this way before.
Setup two X4170's, IPMP, in "probe" mode, everything works as expected. Pull the primary interface connection, it fails over to the standby, plug it back in, it falls back. So far so good.
If I pull the standby, and then a split-second later, the primary, then plug the standby back in, it NEVER fails over to the standby.
Now of course, this could happen in real life. Lose network connectivity on both around the same time maybe the standby would go first. When the standby comes back up, IPMP would never failover correctly until the primary comes back.
Setup two X4170's, IPMP, in "probe" mode, everything works as expected. Pull the primary interface connection, it fails over to the standby, plug it back in, it falls back. So far so good.
If I pull the standby, and then a split-second later, the primary, then plug the standby back in, it NEVER fails over to the standby.
Now of course, this could happen in real life. Lose network connectivity on both around the same time maybe the standby would go first. When the standby comes back up, IPMP would never failover correctly until the primary comes back.
0