AC do cross-chassis IRF, the backup machine reboot problem

 AC do cross-chassis IRF, the backup machine reboot problem?

(1)  through the backup reboot records, to see the reboot reason for the IRF merge soft reboot, that is, Since the reboot is caused by IRF establishment, the IRF must have split before, so what is the reason for the IRF split, then before the IRF must be split, we look at the IRF split reason is what?

(2)  From the AC log information, the IRF split reason is hello message timeout;

(3)  Check the CPU process of the AC, found that the forwarding process is full, so why the forwarding process is running full? AC's CPU process, found that the forwarding process is full, so it can't process hello messages in time, so why is the forwarding process running full?

(4)  Check the AC interface has a large number of broadcast messages, which is obviously not normal;

(5)  Check the switch side, found that there are loops.