QoS - single link - multiple VLANs

Hi,

I need to pick your brains real quick, because I cannot find a solution right one.

We have a dedicated link to a branch location, 10Mbit ethernet, provided by a carrier. Setup looks like this:

– – ---- – –

There is no Mikrotik or any other kind of router involved right now, but problem is that some clients from lan b completely use the whole 10Mbit link, others suffer.

Usually this would be case for a bridge and queues, but I have to deal with multiple VLANs, e.g. VLAN 5, 6, 7 and 8.
5 is more important than 6 and so on.

I need to find a way where I can control the available 10Mbit, if the bandwidth is not utilized each VLAN can use the whole capacity, if available bandwidth goes down we need to shape.

Any idea? I’am thinking in all directions, tunnel, etc. but came to no solution.

Thanks and best regards.

–Michael

I have such a situation in a network with MikroTik routers on each end.
I have used a queue tree that uses classification on DSCP to prioritize voice traffic over normal traffic and normal
traffic over batch traffic.
It works perfectly. There is no noticable delay increase on the voice traffic when other traffic saturates the link.

It should be possible to do this with VLAN as a classifier as well.