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Cisco Bug: CSCvj09541 - ISR4k IOS-XE PBR fails when next hop is recursive over tunnel

Last Modified

Aug 10, 2018

Products (1)

  • Cisco 4000 Series Routers

Known Affected Releases

16.6.4

Description (partial)

Symptom:
[+] Traffic which should match the route-map does not get routed via PBR, and instead takes the next hop specified by the routing table.

Conditions:
[+] PBR is configured to point out a tunnel to a next hop that is not directly connected (i.e. a recursive lookup is required)
[+] The PBR configuration includes the 'set ip next-hop verify-availability' command with an IP SLA / track object for the remote next  hop
[+] The tunnel configuration uses 'ip unnumbered', so the ip addresses on either end of the tunnel are not in the same subnet. Thus, we cannot set a next hop ip that is in a directly connected subnet.
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