VRF lite: unreachable

[rakyomin78]

I was configuring two routers connected to each other with serial0/1 interfaces. I configured ip vrf forwarding on the sub interfaces however both routers cannot reach each other through the vrf instances.

vrf13#

!

interface Serial0/1.1

ip vrf forwarding test

ip address 1.1.1.1 255.255.255.252

end

!

ip vrf test

rd 13:1

vrf14#

!

interface Serial0/1.1

ip vrf forwarding test

ip address 1.1.1.2 255.255.255.252

end

ip vrf test

ip vrf forwarding test

vrf14#

vrf13#sh ip vrf test

  Name                             Default RD          Interfaces

  test                             13:1                Se0/1.1

vrf13#

vrf13#sh ip route vrf test | begin Gateway

Gateway of last resort is not set

     1.0.0.0/30 is subnetted, 1 subnets

C       1.1.1.0 is directly connected, Serial0/1.1

vrf13#

vrf13#show ip interface brief | i Serial0/1.1

Serial0/1.1                1.1.1.1         YES manual up                    up

vrf13#

vrf14#sh ip vrf test

  Name                             Default RD          Interfaces

  test                             14:1                Se0/1.1

vrf14#

vrf14#sh ip route vrf test | begin Gateway

Gateway of last resort is not set

     1.0.0.0/30 is subnetted, 1 subnets

C       1.1.1.0 is directly connected, Serial0/1.1

vrf14#

vrf14#show ip interface brief | i Serial0/1.1

Serial0/1.1                1.1.1.2         YES manual up                    up

vrf14#

vrf13#ping vrf test 1.1.1.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 1.1.1.2, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

vrf13#

vrf14#ping vrf test 1.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

No frame relay, it is just a router to router connection.

Did I miss anything? Just vrf lite without bgp....i suppose i do not need to use export rt and import rt since there is no bgp....

[Kristian Alexander Brown · Accepted solution]

It should work. Can you ping the interfaces without vrf forwarding enabled on the interfaces?

Sent from Cisco Technical Support iPhone App

[rakyomin78]

thanks i have solved the problem myself. thanks for the reply.

[fb_webuser]

looks like, you are missing route distinguisher on vrf14

---

Posted by WebUser Neeraj Jagga from Cisco Support Community App

[rakyomin78]

Problem is not with route distinguisher

vrf14#

!

interface Serial0/1.1

ip vrf forwarding test

ip address 1.1.1.2 255.255.255.252

end

vrf14#sh ip vrf test

  Name                             Default RD          Interfaces

  test                             14:1                Se0/1.1

vrf14#

Even without route distinguisher, it will work on the interface level by merely define the ip vrf instance as shown in one of the post by packetlife.

I have written the findings here https://cyruslab.wordpress.com/2012/05/02/mpls-vpn-vrf/
I used fa interface instead of serial interface.