communication between two VRFs

[anil.kumar1]

Hi All,

I have two customers ( A & B). A is parent and B is child of A but both are on different VRFs . Now Parent A wants to communicate its child B.

is there any possibility?

Since i am new to MPLS so this is just a query that came into my mind. Would really appreciate for any answers.

Regards,

Anil

[Mark Malone]

Hi

Yes you do vrf leaking between the 2 vrfs so they can speak to each other and see each others routes

This doc explains it with examples

http://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/multiprotocol-label-switching-vpns-mpls-vpns/47807-routeleaking.html

[magohil]

Hi Anil,

Assume it is simple form of Hub and Spoke topology.

Vrf A want to communicate with vrf B and same way reverse too.

You may play with rt values. It is very simple to understand: One vrf export prefix with certain tag and another vrf import same tag. Same way for child vrf as well.

vrf A
rd 100:100
export 1:1
import 1:2

vrf B
rd 200:200
export 1:2
import 1:1

Since these are two different customer you may not want to leak all prefix, if so you may play with export / import map , keeping tight control on what prefix from what vrf you want to allow.

Regards

Mahesh