[c-nsp] VRF Problem after Recover Main Link

[Alexandra Alvarado]

Hello,

 

I'm making some tests with a lab composed for 4 catalyst 6500 every one
connected to each other like this:

 

 

            ------------Swtelepuerto-----------------

            |                                               |

Sw9octubre                               swkennedy

            |                                               |

            ------------swboyaca----------------------

 

Switch 9octubre has a connection like U that begins on the interface
GigabitEthernet 7/1 to a switch catalyst 3550, after 2 catalyst 3550 the
connection returns to GigabitEthernet 7/2 to sw9octubre like this:

 

 

Sw9octubre7/1----sw1catalyst3550---sw2catalyst3550-sw3catalyst3550---sw9octu
bre7/2

 

 

Sub ifaces 7/1.501 and 7/2.502 are defined in the iface 7/1 and 7/2 and
these subifaces share the same vrf with the 2 svi 501 and 502 from
sw2catalyst3550, every vlan use a subred /30.

 

The same scenario for the swkennedy!

 

Swkennedy7/1----sw1catalyst3550---sw2catalyst3550-sw3catalyst3550---swkenned
y7/2

 

Now I can ping from sw2catalyst3550 kennedy and sw2catalyst3550 9octubre,
and I have redundancy using MPBGP, but the problem is the next.

 

When I shutdown the interface 7/1 the vrf converge successfully to interface
7/2 but when I recover the interface 7/1 with no shutdown, switches3550 sill
can see each other, but the core can't be able to do ping vrf between
sw9octubre and swkenndy 

 

Thanks

 

A.A.A.A.