According to the RouterOS Manual, under Vlan:
"As VLAN works on OSI Layer 2, it can be used just as any other network interface without any restrictions. VLAN successfully passes through regular Ethernet bridges."
And according to 802.1q a VLAN ID is inserted in the ethernet header between the SOurce MAC Address and Type fields, and this is 4 bytes.
The Design I am trying to achieve (see image) and notes below:
I wish to use vpls (pseudowire) to interconnect two data centers. Each Data center has a cisco siwtch which has a number of vlans. I wish to extend these vlans to the other data center.
The cisco switches dont have the ability to handle mpls/vpls due to licensing restriction.
My question is, will the dot1q vland ids be passed through the bridges within the RB1200 Mikrotiks?
Obviously the VPLS tunnel will be built with PW Type set to tagged ethernet. I am NOT proposing to add the actual VLAN Subinterfaces to the mikrotik ether1. I am hoping that the router will just pass the vlan ids straight through the bridge to the vpls tunnel as a pure trunk.
Before anyone asks, I havent built this yet, so I cant export configs, I am just looking to gurus who can comment on the specific question of Mikrotik ability to retain vlan headers through the bridges.
Many thanks in advance for the advice. Its really appreciated.