VRF over Multililink PPP

[k-gerasymenko]

Hello community,

                       PE                                                 CE

    --------------|.....| ---------------------------------------|.....|

    MPLS                  multilink PPP via E1

I am looking for a solution for the following problem:

We have a PE router ASR 901 and CE router ASR 901. They connected with three E1 ports using multilink PPP. Forwarding packets via PPP link is working. I can ping each other routers (via interface Multilink).

After that I have assigned multilink interface on PE in VRF I cannot ping peers multilink interfaces on both PE and CE.

IOS XE: Version 15.3(3)S1

PE config:

interface Multilink1
 ip vrf forwarding TEST
 ip address 172.1.1.1 255.255.255.252
 no peer neighbor-route
 ppp multilink
 ppp multilink group 1

interface Serial0/0:0
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1
!
interface Serial0/1:0
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1
!
interface Serial0/2:0
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1

CE config:

interface Multilink1
 ip address 172.1.1.2 255.255.255.252
 no peer neighbor-route
 ppp multilink
 ppp multilink group 1

interface Serial0/0:0
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1
!
interface Serial0/1:0
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1
!
interface Serial0/2:0
 no ip address
 encapsulation ppp
 ppp multilink
 ppp multilink group 1

Anyone met the same problem?Any idea how to solve this?

[syed kazim abbas]

Hi gerasymenko,

you are working from PE so please check you are pinging right way:

ping vrf TEST 172.1.1.2

I think it should be reachable, not sure but T1 ports using multilink PPP works fine.

HTH

kazim

[k-gerasymenko]

Hi!

I have tried all options of ping . I thought too it should be reachable. I can work from CE too. It is not working from both side. The IP of local and remote interfaces are unreachable.