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Policy Based Forwarding (PBF) problem

L1 Bithead

I’ve got problem with policy based forwarding. I have 2 ISP - traffic to the 1st ISP is forwarded by pbf, to the 2nd – via default route. PBF rule monitors the remote target’s IP and availability of nexthop address. My question is: how the pbf is checking availability of the nexthop address. I have sniffer open on nexthop address host but I can’t find any specific traffic.

In the system log I’ve got many entries like this: “Vsys 1 PBF rule pbf nexthop is DOWN”. How can I debug this ?

While the pbf status is DOWN I can ping nexthop address from adjacent interface of Palo Alto.

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