Error pinging redistributed route

I am working with IEWB Vol2 lab2 and I have redistributed a route from eigrp running on R3 & R5 to ospf.  Redistribution points were R2 & R3 but R3 routes were preferred due to a lower metric. This ospf process is running on R1,R2,R3.

The route is installed in R1 quite alright but I don’t know why I cannot ping this route from R1.

As shown below, I have no problem pinging this route on R3 even though the route came from R5 but both R3 & R5 are eigrp neighbors.

See the info below

R1
RSRack1R1#sh ip ro 192.10.1.5
Routing entry for 192.10.1.0/24
Known via “ospf 1”, distance 110, metric 20, type extern 2, forward metric 64
Last update from 132.1.0.2 on Serial1/0, 00:08:41 ago
Routing Descriptor Blocks:
* 132.1.0.2, from 150.1.2.2, 00:08:41 ago, via Serial1/0
Route metric is 20, traffic share count is 1

RSRack1R1#ping 192.10.1.5

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.10.1.5, timeout is 2 seconds:
…..
Success rate is 0 percent (0/5)

Pinging work on this route from R3:
Rack1R3#sh ip ro 192.10.1.5
Routing entry for 192.10.1.0/24
Known via “eigrp 10”, distance 170, metric 2195456, type external
Redistributing via eigrp 10, ospf 1
Advertised by ospf 1 metric 30 subnets
Last update from 132.1.35.5 on Serial1/1.1, 00:26:33 ago
Routing Descriptor Blocks:
* 132.1.35.5, from 132.1.35.5, 00:26:33 ago, via Serial1/1.1
Route metric is 2195456, traffic share count is 1
Total delay is 21000 microseconds, minimum bandwidth is 1544 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1

Rack1R3#ping 192.10.1.5

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.10.1.5, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/44/56 ms

Also traceroute always get to R3 serial intf. and stops

Rack1R3#traceroute 192.10.1.5

Type escape sequence to abort
Tracing the route to 192.10.1.5

1 132.1.0.2 24 msec 52 msec 44 msec
2 132.1.23.3 64 msec 92 msec 68 msec
3 * * *
4 * * *
5 * * *

The Solution:

AFter wasting some good minutes on this wondering why ? I had to start “thinking” as a router to figure out what was wrong here……

First I narrowed the problem down to communication down to R3 as shown by traceroute, the routes hits R3 serial intf. so why is R3 not routing it towards R5 or routing the icmp backk to R1.

Finally I found out that I FORGOT to redistribute ospf into eigrp on R3, hence R5 does not really have the ip address of R1 in its routing table, hence when it receives packets from R1, it drops it!!

This is probably one of those kinds of silly mistakes that everyone talks about.

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