Hi all,

New to Microtik community and the Microtik devices themselves, however I am hoping to find some assistance in configuring 2 x Microtik switches that will allow VLAN traffic over an EVC.

The EVC is provided by the ISP.
We have an on-prem infrastructure and a rack in a datacentre.
The datacentre hosts, lets say, 29 VLAN's and 1 MGMT Network which is untagged.
There is a need to allow VLAN traffic (and MGMT Network) to traverse over an EVC supplied by ISP.
ISP has advised this is achievable with MikroTik switches (which I have now procured).
So I now have 2 x CRS309-1G-8S+IN Switches (1 in office, 1 for DataCentre).

ISP has advised this can be done in either of 2 ways.
1. Set GC port as vlan tagged e.g. vlan 2 and then q-in-q your vlans (with a different TPID) within that eg.
[GC TPID 0x8100 VLAN 2 [MY DATA - TPDID 0x8088 VLAN X]]
[GC TPID 0x8100 VLAN 2 [MY DATA - TPDID 0x8088 VLAN Y]]
[GC TPID 0x8100 VLAN 2 [MY DATA - TPDID 0x8088 VLAN Z]]

2. Simply send through your frames with alternative TPID, e.g.
[MY DATA - TPDID 0x8088 VLAN X]
[MY DATA - TPDID 0x8088 VLAN Y]
[MY DATA - TPDID 0x8088 VLAN Z]

I would appreciate it if anyone has encountered this requirement and can assist me in device configuration.

Thanks in advance.
mpayze

The configuration example you need to do QinQ on a CRS3xx switch is in the MikroTik Wiki here:

https://wiki.mikrotik.com/wiki/Manual:I ... 8Q-in-Q.29

The support was added in 6.43rc13
*) crs3xx - added initial Q-in-Q hardware offloading support (CLI only)

Should the qinq / provider bridge config not be done by the ISP?