How does downstream/upstream switch/router know which is active firewall after failover/failback in Active/passive mode

perumalj — Fri, 22 Oct 2021 01:41:01 GMT

How does downstream/upstream switch/router know which is active firewall after failover/failback in Active/passive mode?

Re: How does downstream/upstream switch/router know which is active firewall after failover/failback in Active/passive mode

PavelK — Fri, 22 Oct 2021 02:04:47 GMT

Thank you for posting question @perumalj

Depending on HA configuration the interfaces of Passive Firewall will be either Shutdown or in Auto Mode where interface will be up and downstream device will learn about failover by GARP for IPv4:

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000PLVICA4

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000Cm0ACAS

Kind Regards

Pavel

topic Re: How does downstream/upstream switch/router know which is active firewall after failover/failback in Active/passive mode in General Topics

How does downstream/upstream switch/router know which is active firewall after failover/failback in Active/passive mode

Re: How does downstream/upstream switch/router know which is active firewall after failover/failback in Active/passive mode