Hi I'm on a EoMPLS project. I succed to connect Customer site accross EoMPLS tunnel.
This is my architecture :
LAN1 -- CE1 --- PE1 (7200)---- MPLS backbone --- PE2 (7200) -- CE2 -- LAN2
Now I know how to transport vlan between CE but my problem is to understand the difference.
In my mind, "Vlan-based" use one VLAN operator (So 1 pseudowire) to transmit all frame tagged or not to CE2. And, "QinQ" allow to do the difference between different Customer VLANs and forward accross MPLS backbone frame on different VLAN operator.
2 questions :
1. Have I correctly understand ??
2. If I'm right, Why we need QinQ ?? What QinQ bring it more than VLAN-BASED ??
3. My goal is to create on Site 1 any vlans and with VTP transport them to Site 2. What kind of these two technology based on VLAN use ??
Thanks for answer !