Thanks for update and SK. we have done the Gateway 2 to standby which was running on Active mode, i think due to that this issue accrued.
[Expert@EMB-SJRM2-FW01:0]# cphaprob stat
Cluster Mode: High Availability (Active Up) with IGMP Membership
ID Unique Address Assigned Load State Name
1 (local) 1.1.1.1 100% ACTIVE EMB-SJRM2-FW01
2 1.1.1.2 0% STANDBY EMB-SJRM2-FW02
Active PNOTEs: None
Last member state change event:
Event Code: CLUS-114704
State change: STANDBY -> ACTIVE
Reason for state change: No other ACTIVE members have been found in the cluster
Event time: Tue Aug 5 19:55:04 2025
Last cluster failover event:
Transition to new ACTIVE: Member 2 -> Member 1
Reason: ADMIN_DOWN PNOTE
Event time: Tue Aug 5 19:55:04 2025
Cluster failover count:
Failover counter: 14
Time of counter reset: Sat Aug 24 11:56:54 2024 (reboot)
[Expert@EMB-SJRM2-FW01:0]#