unable to Ping IP when using route redistribution

[mahesh18]

Hi Everyone,

I have below setup

R1 is running EIGRP and connected to R2 via EIGRP

R2 is Running OSPF and connected to R3 via OSPF.

R2 is doing the redistribution of eigrp to ospf and vice versa.

R1 config

interface FastEthernet1/0/1

ip address 10.1.12.1 255.255.255.0

R1# sh ip  eigrp nei

EIGRP-IPv4 Neighbors for AS(100)

H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq

                                            (sec)         (ms)       Cnt Num

0   10.1.12.2               Fa1/0/1           13 01:47:54  652  3912  0  14

R2 config

interface FastEthernet0/16

ip address 10.1.12.2 255.255.255.0

sh ip eigrp nei

EIGRP-IPv4:(100) neighbors for process 100

H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq

                                            (sec)         (ms)       Cnt Num

0   10.1.12.1               Fa0/16            12 01:49:44    1   200  0  36

interface FastEthernet0/19

  ip address 10.1.23.2 255.255.255.0

sh ip ospf 10  neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface

10.1.23.3         1   FULL/DR         00:00:38    10.1.23.3       FastEthernet0/19

Redistribution config on R2

router ospf 10

router-id 10.1.23.2

log-adjacency-changes

redistribute eigrp 100 subnets

network 10.1.23.0 0.0.0.255 area 10

distribute-list 1 out

router eigrp 100

redistribute ospf 10 metric 100 100 100 100 100

no auto-summary

network 10.1.12.0 0.0.0.255

R3 config

interface FastEthernet0/16

  ip address 10.1.23.3 255.255.255.0

Neighbor ID     Pri   State           Dead Time   Address         Interface

10.1.23.2         1   FULL/BDR        00:00:36    10.1.23.2       FastEthernet0/16

R1 Routing Table shows routes learned via ospf network of R1.

R1#sh ip route eigrp 100

     10.0.0.0/8 is variably subnetted, 15 subnets, 2 masks

D EX    10.1.10.1/32 [170/25628160] via 10.1.12.2, 01:17:03, FastEthernet1/0/1

D EX    10.1.11.1/32 [170/25628160] via 10.1.12.2, 01:17:03, FastEthernet1/0/1

D EX    10.1.8.1/32 [170/25628160] via 10.1.12.2, 01:17:03, FastEthernet1/0/1

D EX    10.1.9.1/32 [170/25628160] via 10.1.12.2, 01:17:03, FastEthernet1/0/1

D EX    10.1.13.1/32 [170/25628160] via 10.1.12.2, 01:17:03, FastEthernet1/0/1

D EX    10.1.7.1/32 [170/25628160] via 10.1.12.2, 01:17:03, FastEthernet1/0/1

D EX    10.1.23.0/24 [170/25628160] via 10.1.12.2, 01:17:03, FastEthernet1/0/1

i am able to ping the IP of OSPF interface of R2 but not of R3 as shown below

R1#                          ping 10.1.23.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.23.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/8 ms

R1#                          ping 10.1.23.3

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.23.3, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

R1#

Need to know even the route is in routing table why i am umable to ping the IP 10.0.23.3?

Also unable to ping the loopback IP of R3  below

R1#                          ping 10.1.10.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.10.1, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

Regards

Mahesh

[cadet alain · Accepted solution]

Hi,

you're getting the OSPF routes redistributed into EIGRP but is R3 getting the EIGRP routes redistributed into OSPF ?

Could you also get rid of your distribute-list on R2 in the OSPF process

Regards.

Alain

Don't forget to rate helpful posts.

[mahesh18]

Hi Alain,

Yes R3 was getting the filtered EIGRP routes from R1 via R2.

i removed the distribute list on R2 and ping worked fine now.

I understood now why ping was not working earlier as R1 int IP 10.1.12.1 was dropped by the distribute list.

Now i added this to ACL 1 on R2 which is used by distribute list on R2 and ping works fine now while using distribute list on R2.

Best regards

Mahesh