In the N8500 (V200R001) system, when you run the gabconfig -a command on a cluster node, the system displays the following figure.
N8000V2R1-01-01 # gabconfig -a
Port b gen bab409 membership 0123
Port f gen bab412 membership 0123
Port h gen bab40d membership 0123
Port v gen bab40d membership 0123
Port w gen bab40f membership 0123
You determine that the heartbeat members of the node is not started, you can use /etc/init.d/llt start to try to start it.