Loop Protection and VLANs?

[ginovilla]

Question:

Does loop protection works on vlans?

Meaning is the loop is between vlaned traffic, would the Switch shut down the ports? Or the switch just monitors vlan 1 for looped packets?

[Eric Stern]

Loop protection detects physical loops and is not affected by VLANs.

[ginovilla]

Thanks, but we have a very specific scenario, no traffic goes on vlan 1, customer traffic is on tagged vlans. Let say that for example:

Customer has 2 ptp links , both connected to a Netonix Switch,

port 1 vlan 400 tagged -> to customer PTP radio 1
port 2 vlan 500 tagged-> to customer PTP radio 2

CPE Radio for each PTP link untags the traffic and hands it over to customer untagged:

What would happen if the customer plugs both ethernet handoffs to a switch?

[mike99]

You need MSTP or ERPS for per instance (per VLANs group) loop protection but both are currently in beta phase (ERPS is even more alpha then beta). Those 2 features while eventually let you have those kind of scenario but for now, you need a dedicated port and antenna for both link to this customer and use RSTP.

[ginovilla]

Thanks for the reply, my example was not a actual deployment we have or want to do, its an example for the sake of really know how loop protection in Netonix works.

So recapping, loop protection inside vlan does not work?

[mike99]

Those features are available but not reliable for now.