Prefix in EIGRP routing table

[jake.bunce]

Hi,

I have an EIGRP routed network which is selecting best path routes, and routing information is being sent and received as expected. A few entries are in the routing table do not state the next hop, or the route's feasable distance. They are however reachable and I can pass traffic to and from the network:

D       10.18.1.46/32 [90/1408256] via 10.18.1.46, 01:44:39, Tunnel0
D       10.18.1.47/32
D       10.18.1.45/32 [90/1408256] via 10.18.1.45, 01:44:39, Tunnel0

Does any one know what would cause this?

Thanks

Jake

[Peter Paluch]

Hi Jake,

Whoa, interesting output Would you mind posting the output of the command show ip route 10.18.1.47 255.255.255.255 and perhaps also the entire show ip route output?

Best regards,

Peter

[jake.bunce]

Routing entry for 10.18.1.47/32

  Known via "eigrp 100", distance 90, metric 26245120, type internal

  Redistributing via eigrp 100

  Last update from 10.254.0.100 on FastEthernet0/1, 00:20:54 ago

  Routing Descriptor Blocks:

  * 10.254.0.100, from 10.254.0.100, 00:20:54 ago, via FastEthernet0/1

      Route metric is 26245120, traffic share count is 1

      Total delay is 525200 microseconds, minimum bandwidth is 200 Kbit

      Reliability 255/255, minimum MTU 1472 bytes

      Loading 11/255, Hops 4

[Peter Paluch · Accepted solution]

Hello Jake,

The information you provided suggests that the route towards 10.18.1.47/32 goes through the next hop 10.254.0.100, and it all appears to be a perfectly correct routing table entry. Are you suggesting that the pure show ip route output does not contain information about the next-hop IP and the egress interface? Is it possible that the output is just wrapped in a way that parts of the output are placed onto another line?

Have a look at the show ip route once more please - without any filters ( | include , | exclude etc.), and try to look a few lines before and after the confusing entry about 10.18.1.47/32 - especially the line immediately below the 10.18.1.47/32 entry should be actually a continuation of the previous line.

Best regards,

Peter

[jake.bunce]

Hi Peter,

sh ip route | i 10.18.1.

Was causing the strange output.

Thanks for your time :-)

Jake