VPLS QUESTION

[sarahr202]

Hi everybody

I hope everybody is doing fine.  Learning VPLS implementation on cisco, I have a few questions for you guys , I can not perform this lab in GNS3, and the books  I have been reading do not address these questions.

PE1

interface FastEthernet4/2

no ip address

 switchport

switchport access vlan 111

l2 vfi cust-one manual

vpn id 1

neighbor 10.100.100.2 encapsulation mpls

neighbor 10.100.100.3 encapsulation mpls !

interface Vlan111

no ip address xconnect vfi cust-one

+++++++++++++++++++++++++++++++

1) Let say PE1 above receives a frame, it is untagged on f4/22, 

PE1 notices that port is a part of vlan 111, PE1 therefore looks up MAC table for vlan 111, PE1 determines that frame need to be forwarded out on a PW,

My question is ::Will PE 1 add Vlan tag 111 before forwarding out that frame on a PW ?

2) May  i say every time a frame needs to be sent out of PW defined under " interface vlan xx", Vlan tag XX is added to the frame ?

Thanks

Have a great day.

i

[Vincenzo Errante · Accepted solution]

1) no, vlan111 is a part of the  vfi that is indipendent in this case from local vlan 

for example you can use vlan111 - pe1 ---- pe2 -- vlan112 and this works correctly

2) yes, because the tag is applied on local side on all trunk that you want

regards