Task 4.3

On SW2 we already have a default route generated from R3 in Task 3.10.  This route is load balanced between SW3 and SW4. Upon recieving the BGP generated default NLRI from R1, S1 will mark it as best and also as a RIB failure.  So, it will not use this route.  The SG doesn't mention this at all.  As a matter of fact, the SG shows the verification step with the BGP learned route in the routing table of SW2.  Did I miss something?

Rack18SW2#show ip route
O*E2 [110/1] via, 00:33:31, Port-channel23
               [110/1] via, 00:33:31, FastEthernet0/21

Rack18SW2#show ip bgp
   Network          Next Hop            Metric LocPrf Weight Path
r>i0.0.0.0              0    100      0 i



  • I had the same problem.  I just created a distribute list on SW2 denying the default route from OSPF.  I think that is the only way to get BGP to install the route.  I tried adjusting the administrative distance of the BGP route but it didn't have any effect.

  • Do clear ip ro after adjusting administrative distance

    Rack1SW2#sh ip ro | i
    Gateway of last resort is to network
    B* [100/0] via, 00:01:40

    Question is why SG don't mention about adjusting distance.

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