Scenario: An administrator notices that each time the secondary node of a high availability (HA) pair is restarted, the primary node shifts to a non-working state. The administrator runs a command…

Scenario: An administrator notices that each time the secondary node of a high availability (HA) pair is restarted, the primary node shifts to a non-working state. The administrator runs a command and collects the information displayed below: 1) Node ID. 0 IP: 172.31.250.10 Node StatE. NOT UP Master StatE. Secondary INC StatE. DISABLED Sync StatE. DISABLED Propagation: ENABLED Enabled Interfaces : 1/5 1/1 1/2 1/4 0/1 Disabled Interfaces : 1/3 HA MON ON Interfaces : 1/4 1/1 0/1 Interfaces on which heartbeats are not seen : 1/4 1/1 1/2 1/5 0/1 Interfaces causing Partial FailurE. 1/4 SSL Card Status: UP Hello Interval: 200 msecs Dead Interval: 3 secs Node in this Master State for: 0:0:0:35 (days:hrs:min:sec) 2) Node ID. 1 IP: 172.31.250.20 Node StatE. UNKNOWN/DOWN Master StatE. UNKNOWN INC StatE. UNKNOWN Sync StatE. UNKNOWN Propagation: UNKNOWN Enabled Interfaces : UNKNOWN Disabled Interfaces : UNKNOWN HA MON ON Interfaces : UNKNOWN SSL Card Status: UNKNOWN What could be the cause of this issue?