Hello - In PaloAlto 5220 appliance configured in Active/Passive mode, both the Firewalls do have the same MAC address on interfaces. For example ETH 1/1 of active and standby Firewall have the same MAC address after cluster/HA was created.
These the switchport connecting the StandbyFirewall doesnt learn the MAC address of the Paloalto interface.
From switch what is the way to know the MAC and ARP of the secondary firewall interface?
Solved! Go to Solution.
The MAC address is the same, as you've noted. The switch will learn of the passive only if a failover happens, at which point the (formerly passive) firewall will send a gratuitous ARP which will tell the switch to forward packets on the new port even though the IP and MAC are the same.
One thing to note as it's sort of relevant...
Never copy your HA Config to another firewall on your network without removing all the HA configuration. Otherwise bad things happen!
Click Accept as Solution to acknowledge that the answer to your question has been provided.
The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!
These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the Live Community as a whole!
The Live Community thanks you for your participation!