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Cisco Bug: CSCuj99749 - VPNv4 MED remains unchanged after IGP metric change

Last Modified

Mar 11, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

12.2(33)SB 12.2(33)SRE4 15.0S

Description (partial)

Symptom:
MED is set correctly for VPNv4 when route is first advertised by eBGP, but is not updated to reflect changes in IPv4 unicast IGP metric for the nexthop

Conditions:
This problem is seen only when all the following conditions are met.  If one or more of the following conditions is not met, you will not encounter the problem:
1. The route must match a route-map entry containing:
       set metric-type internal
2. The nexthop must be an IPv4 unicast nexthop
3. The neighbor to which the route should be propagated is a VPNv4 neighbor (eg: on a vrf)
4. There are no other changes to the route which would cause the net to be readvertised
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