Company ABC closes a deal with a Partner Company that requires redundant network paths between the two networks.
This requirement is met by enabling 2 connections:
Static routes are configured on R1 and R2 for the 2 subnets in partner's network (
172.16.11.0/24) and they are redistributed into the OSPF Area 0:
Unfortunately, the network administrator is not happy with the OSPF best path performed on the company router R3 for those external routes.
As displayed above, R3 prefers the
traceroute 172.16.10.5... 1 10.0.34.4 80 msec 48 msec 28 msec 2 10.0.24.2 64 msec 40 msec 68 msec 3 192.168.2.6 32 msec 56 msec 64 msec 4 172.16.10.5 124 msec * 148 msecR3# R3# sh ip route 172.16.10.0Routing entry for 172.16.10.0/24 Known via "ospf 1", distance 110, metric 20, type extern 2, forward metric 2 Last update from 10.0.34.4 on FastEthernet0/1, 00:06:56 ago Routing Descriptor Blocks: * 10.0.34.4, from 192.168.2.2, 00:06:56 ago, via FastEthernet0/1Route metric is 20, traffic share count is 1 R3#
Why is it so? Is there a problem with OSPF or the selected path is really the shortest/correct one ?
- there was
- don't worry about return traffic: static routing for network 10.0.0.0/8 was configured on Partner devices !
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