PE SVI ports in VPLS needed?

[steven.crutchley]

I'm trying to get my head around the exact operation of VPLS configuration on PE routers whereby, according to the MPLS Fundamentals Guide, to add a CE facing port to a given VFI instance you should use an SVI as follows:

hostname VPLS-PE-1
!
mpls label protocol ldp
mpls ldp router-id Loopback0 force
!
l2 vfi cust-one manual
 vpn id 1
 neighbor 10.100.100.2 encapsulation mpls
 neighbor 10.100.100.3 encapsulation mpls
!
interface FastEthernet4/2
 no ip address
 switchport
 switchport access vlan 111
 spanning-tree bpdufilter enable
!
interface POS5/1
 ip address 10.10.1.1 255.255.255.0
 mpls ip
 mls qos trust dscp
!
interface Vlan111
 no ip address
 xconnect vfi cust-one

But is there any reason why this has to be an SVI interface? I am about to lab this but thought I would pose the question, to make sure I am on the right track... is there any reason why I can't do this for Fa4/2 and just forget about using VLAN 111 and its SVI?

interface FastEthernet4/2
 no ip address
 xconnect vfi cust-one

 

[Giuseppe Larosa]

Hello Steven,

we have just deployed a network for a customer where we used the l2vpn vfi new syntax on ME-3600-X.

We have still a command that connects the SVI to the VFI but it has become member vfi 

modern syntax on ME-3600-X:

mpls label protocol ldp
l2vpn
logging pseudowire status
router-id 192.168.246.25
!
l2vpn vfi context COMPLESSO-CAVALLI-GEOSCENZE
vpn id 100100101
autodiscovery bgp signaling ldp
vpls-id 65001:100100101
rd 65001:100100101
route-target export 65001:100100101
route-target import 65001:100100101
!

interface GigabitEthernet0/1
description *** COMPLESSO CAVALLI - GEOSCENZE ***
switchport trunk allowed vlan none
switchport mode trunk
service instance 10 ethernet
encapsulation default
l2protocol forward
service-policy input SetDSCP
!
!

+

bridge-domain 101
member GigabitEthernet0/1 service-instance 10
!

+

interface Vlan101
no ip address
member vfi COMPLESSO-CAVALLI-GEOSCENZE
!

As you see there is still the need to link the VPLS l2vpn vfi object to the SVI.

So I don't think you will be successful with your tests.

Hope to help

Giuseppe