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10-12-2021 11:52 PM - edited 10-20-2021 09:49 PM
Hey everyone,
Just started with Palo and was researching the optimal way of configuring ISP failover to include automatic failover of site to site tunnels.
Is there a reason to use PBF over static route removal?
Based on the reading date I was doing today, SRR appears less convoluted than PBF and seems the most similar to Cisco's SLA configuration which worked well for me before.
Thanks
10-13-2021 10:23 AM
Hello,
I have done this many times. First I setup VPN connections via both ISP's. Then I create OSPF adjacencies between the two VPN endpoints. I then use metrics so that I force the traffic down the VPN tunnel I choose as primary and secondary. So for the secondary i would choose a metric such as 5000, this makes sure the primary tunnel is the preferred one.
I have also used Policy based forwarding to accomplish the same thing. IT all depends on which one you are most comfortable with.
Regards,
10-13-2021 04:32 PM
Hi @Evahi21 ,
If you have at least 1 public IP address advertised to both ISPs, I would use a loopback for a single VPN tunnel. That design is by far the simplest, but requires a separate public subnet than the ones on the interfaces.
Thanks,
Tom
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