Tagged RSTP BPDUs not passing via Q-in-Q

[abjornson]

I have some scenarios in my network where I am using netonix switches essentially as passive midspan poe injectors. I have pairs of ports on the netonix configured to use Q-in-Q vlans, through which I pass my own vlans from my POP routers.

I am running Netonix firmware 1.4.6.

netonix ports 1 and 2: q-in-q, vlan 20

netonix port 1 is patched to a port on the mikrotik POP router. The mikrotik's interface has multiple tagged vlan subinterfaces, one of which is attached to a bridge on the mikrotik

netonix port 2 powers a Ubiquiti wifi radio, a transparent bridge, point to point link to another site. The far end of the p2p link is patched directly to a second Mikrotik router, without the use of a netonix. The remote Mikrotik router has the same vlans configured as the local Mikrotik router.

Everything works well, the mikrotiks are able to communicate on all the tagged vlans as expected. However, RSTP BPDUs do not seem to pass through the netonix q-in-q vlan.

I have tried disabling or enabling RSTP on the netonix to no avail.

I have read elsewhere in the forums that managed switches like the netonix do not transparently pass BPDUs....but I think this only applies to the untagged/native vlan, correct? I think I understand that other people are passing RSTP BPDUs on tagged vlans through netonix switches transparently? Or is this not the case?

I have also seen mention of a feature under consideration to allow BPDUs to pass through the netonix transparently if RSTP is disabled...however, I couldn't find mention in any of the changelogs that this was implemented. Is it correct that it was not implemented?

Is there a configuration of the netonix that will allow the BPDUs of my two mikrotiks to reach each other via the q-in-q vlan on the netonix? Or am I out of luck?

Thanks in advance!

[mike99]

Spanning tree won't passer over Q-in-Q. You would need need tunneling for this like L2PT or EVC.

[abjornson]

Thanks @mike99 - Does this mean on a netonix switch it's not really possible to run scenarios where a single ethernet link contains multiple vlans, each of which have their own RSTP traffic inside of them?

I think the netonix is only able to participate in RSTP on the default/untagged vlan, is this right?

[mike99]

I think the switch core is capable of L2PT, not sure about it, but can't confirm since I don't have access to the docs. As I know, if support by switch core, integration is not currently planned by netonix but you can always make a fracture request.

EVC can't probably be support on currently line since it's not a carrier switch core.

[mike99]

MSTP for multiple STP instance is in test phase.