What are the conditions for the active/standby switchover for the UA5000 PVMB with dual upstream services?
When the upstream port status changes, the PVMB with dual upstream services switches over. If the port of the active board becomes DOWN, the active/standby switchover occurs and the upstream port of the standby board becomes UP after the standby board becomes active.
Besides, if the ARP detection is enabled, the active/standby switchover also occurs when the active board cannot receive the ARP message returned by the gateway.
It is recommended that the active/standby switchover also be triggered if the MG interface status changes.