Palo Alto Dual ISP

Palo Alto Dual ISP

In Dual/Multiple ISP implementations, PBF has been traditionally used with separate VRs for traffic failover between the ISPs. 
A new feature "Static Route Removal Based on Path Monitoring " has been introduced on version 8.0 and above.

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000PLL8CAO

1. Interfaces

2. Default Routes

3. Path monitor on the primary route

 4. Runtime Stats

ISP1 is UP:

ISP1 is Down

ISP1 is back up, default hold time 2 minutes starts count down

Using PAN-OS SD-WAN for Redundant Internet

https://pan.dev/panos/docs/tutorials/redundant-internet/