trunk vrf

[nwag_2009]

Hi,

I am trying to establish a trunked (static, bgp)vrf link between two routers, how do you go about creating this. Do you need to use subinterfaces, Can you send some config examples please?

Thanks

[Ruben Cocheno]

You can have 2 types of setup:

For both scenarios you need setup the vrfs

ip vrf cust1

rd 1:1

ip vrf cust2

rd 1:2

1. Using a trunk

vlan 12

vlan 14

interface vlan 12
ip vrf forwarding cust1
ip address 172.16.12.1 255.255.255.0
!
interface vlan 14
ip vrf forwarding cust2
 ip address 172.16.14.1 255.255.255.0

2. Using SubInterfaces

interface FastEthernet0/0.12
 encapsulation dot1Q 12
ip vrf forwarding cust1
ip address 172.16.12.1 255.255.255.0
!
interface FastEthernet0/0.14
 encapsulation dot1Q 14
ip vrf forwarding cust2
 ip address 172.16.14.1 255.255.255.0

[xthuijs]

One additional note; the "option 1" is for the 7600 or an IOS based device, for XR you would want to use the BVI method:

Define the "efp" (eg vlan trunk port)

int g 0/0/0/0.12 l2transport

encap dot1q 12

rewrite ingress tag pop 1 symmetric

Create a bridge group and link it to a BVI:

l2vpn

bridge group BLA

bridge-domain BLABLA

int g 0/0/0/0.12

routed interface BVI 10

int bvi 10

vrf cust1

ipv4 add 1.1.1.1 255.255.255.0

regards

xander