02-22-2021 12:22 PM
I've noticed that unlike with ASA, the FTD appliances are not configured with a standby IP when the interfaces are configured. Instead, the secondary peer interfaces show as unassigned. Just to wrap my head around this - when the appliances fail over, the IPs are taken over by the secondary peer and it begins answering arp requests for them?
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02-22-2021 07:51 PM
Just like with ASA, you can optionally assign standby IP addresses to interfaces in an HA pair.
Either way, the newly active unit will send a gratuitous ARP when it takes over the active role so that the adjacent upstream and downstream devices recognize it as the "owner" of the active IP addresses.
02-22-2021 07:51 PM
Just like with ASA, you can optionally assign standby IP addresses to interfaces in an HA pair.
Either way, the newly active unit will send a gratuitous ARP when it takes over the active role so that the adjacent upstream and downstream devices recognize it as the "owner" of the active IP addresses.
02-23-2021 05:51 AM
Is there an advantage to adding the standby IP address over using only the single IP? Does it aid in the fail-over time when the peers fail-over between one another?
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