Hi guys ,

Im receiving from my provider following frame on my CRS317 (ver6.45) sfp interface.
s-vlan : 1000
c-vlan : 600, 500.
I need to remove the outer (s-vlan) and forward those paquets tagged with inner vlans (500 and 600) on another trunk interface.
Of course .... I would like to use offload chip feature.

I founded following example:
https://wiki.mikrotik.com/wiki/Manual:I ... 8Q-in-Q.29
But ... this is not my scenario and it is not very clear for me.
Other consern is , I already have bridge with multiple bounded tagged interfaces to it... so I dont want to take down those services.

Can you point more working examples for this ?
Regards.
Leandro.

I would think where the provider hands off the connection to you, the s tag is removed and you should only receive the 2 c tags from hand off

Seems like they have an example of this in the new help docs.

If i'm reading it right, you'll need a bridge set with ether-type=0x88a8

https://help.mikrotik.com/docs/display/ ... VLAN+Table

I'm receiving from my provider following frame on my CRS317 (ver6.45) sfp interface.
...
Of course .... I would like to use offload chip feature.

Other consern is , I already have bridge with multiple bounded tagged interfaces to it... so I dont want to take down those services.

As @IPANetEngineer noted, you need a bridge with ether-type=0x88a8 to add/remove S-TAGs. So you can't do it using your existing bridge (assuming it's dealing with usual C-TAGs with ether-type=0x8100). While it is possible to have multiple bridges in a single Mikrotik device, only one bridge can be HW-offloaded. So you'll either have to disable HW-offloading for one bridge (e.g. the one dealing with S-TAGs) and face pretty low performance (something around 1Gbps per CRS device, but shouldn't affect performance of the other bridge) or dedicate one CRS for S-TAG handling (I'm not sure if other Mikrotiks with switch chips can handle ether type 0x88a8 in hardware).

Hello
sorry to resurrect an old thread, but the question is still valid, also for me.

From the ISP we got vlan (100), and then other different vlans (10,11,12,13)

At the moment we use the cisco's way to handle them:
vlan 100 on the sfpplus interface, vlan 10,11,12 on the vlan 100 interface.
Then in the end we bridge all the inner vlans 10,11,12 into a big bridge and we start from there.
It is not optimized at all.
We dont use "use service tag yes anywhere" so they should be 0x8100
Can we see some real examples?

It will not be an issue to use a first CRS (for example a CRS309) as front-end to the isp, then making a connection to our CCR2116, so we could implement the l3-hw easily

thank you