We have Palo Alto firewalls (various models like 3050, 5220 and 3220) which are in HA (active-passive mode). IPSEC tunnels are working fine when traffic is on active gateway. The issue is, when we failover traffic on passive gateway, internet works fine but my tunnel resources becomes unreachable. When i checked tunnel status on gateway, it shows Phase-2 is up but Phase-1 is down.
Then we had to manually initiate traffic from gateway by test vpn commands and after 2-3 mins, tunnel resources becomes reachable. my HA1 and HA2 links are up. Also i see IPSEC SAs getting copied from active to passive. But facing this issues when failover happens. All gateways are running on 9.0.3-h3 but we had this issue on 8.1.x also. Also this issue is not gateway specific, we are facing it on all HA clusters.
Is any one faced such issues ??
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