Whats the proper way to handle loops with qinq.
We have 2 feeds from a customer's core to a bunch of remote sites, we will be running the vman to all the sites back to our core, our core is 2 sets of 2 mlag'd x670's...
On our aggregation layer we're between extreme and extreme on our own network, so we will just add the vman tagged to our existing ISC and ports on both switches like a normal vlan...
But exiting to the customer we're untagging the vman to return it to standard vlans for them... Do they aren't using lag we're connecting to 2 separate switches and they are supposedly running stpd on their side...
Do I need to add the vman to the ISC? even though i'm handing off direct no lacp/lag to them, how do I make sure not to create a loop, I can't enable stpd towards them, as you cant run stpd on a vman only on a vlan...
pardon my crude ascii mockup
VARIOUS CLIENT EQUIPMENT delivered to their core via vman
| | | |
REST OF MY NETWORK VIA LAG
MYCORE1 ---- ISC ---- MYCORE2
they say they are running stpd here on their vlans
THEIRCORE1 -- STPD -- THEIRCORE2
Do I just need to trust them to be running spanning tree and not create a loop, or how are others handling this.