I have two CRS328 switches running stable Router OS.
They are connected over a 500m fibre SFP+ which is trunking serveral vlans.
It is an AV scenario with audio and video and control seperated on different VLANS.
Al the standard IP stuff works fine, I can plug devices into one switch and they can be accessed via the other, they are all layer 3 devices.
I have a couple of devices that are specifically layer 2 and cannot have any layer 3 functions present. They cannot have any other traffic on their network.
I have a dedicated VLAN for each of these, so for example, port 24 is on VLAN 24 on both switches.
The problem I'm having is that the devices are spitting the dummy and not getting clock sync, presumably because they don't like a specific feature that is turned on.
I've disabled STP, loop protect, IGMP and every other Layer 3 protocol I can find on that VLAN.
I also tried setting up a dedicated bridge for that port pair to see if that would work but no luck.
The document outlining the requirements is on page 4 of here:
http://www.allen-heath.com/media/DX-Sys ... -ISS_1.pdf
I'm starting to run out of ideas.
Basically what I need is to trunk the two switches togehter but have groups of ports that allow Layer 3 and groups of ports that don't.
Any ideas on the best way to achieve this that isn't going to turn me grey?