VPLS, EVC

Pok LY · ‎03-10-2015

Dear All,

We have network connectivity as in attachment but we could not make it work with the config below could you please help to advise ? Please note that our vpls network is working properly and we suspect the problem with "rewrite".

Regards, Pok.

PE01 A#

interface GigabitEthernet0/0/0
description TO~MX-PNHCC-AS01~Gi0/10
mtu 4470
bandwidth 1000
no ip address
negotiation auto
cdp enable
service instance 30 ethernet
encapsulation dot1q 30
rewrite ingress tag push dot1q 100 symmetric
bridge-domain 111
!
service instance 40 ethernet
encapsulation dot1q 40
rewrite ingress tag push dot1q 100 symmetric
bridge-domain 111

PE02 A#

interface GigabitEthernet0/0/1
description To-MX-PNHKT-CS01-Gi0/1
mtu 4470
no ip address
negotiation auto
cdp enable
service instance 30 ethernet
encapsulation dot1q 100 second-dot1q 30
rewrite ingress tag pop 1 symmetric
bridge-domain 111
!
service instance 40 ethernet
encapsulation dot1q 100 second-dot1q 40
rewrite ingress tag pop 1 symmetric
bridge-domain 111

Adam White · ‎03-30-2015

I think you have confused things a bit.

So on PE1

you will add another vlan tag of 100 when traffic ENTERS the interface (Ingress).

This gets to PE2 (hopefully)

the process works in reverse. So you would need

encapsulation dot1q 30

rewrite ingress tag push dot1q 100 symmetric

Traffic will enter the service instance and dot1q tag of 100 will be removed.