
Hello,
I have this setup running, and I tried to convert one of our physical links to the operator's router to trunk ports (the red link in the picture, earlier it was access port too).
What happened after this is that the VLAN10 went into blocking mode in spanning tree.
As I have mentioned, we have enabled the loopguard dafault globally on my side switch stack.
Operator has disabled spanning tree.
Thus, to run the above mentioned setup without any spanning tree issues, or without the loopguard dafault affecting the setup, what would be the best possible solution to this, any ideas?
One idea I thought is to disable spanning tree on the ports towards the operator routers.
Please let me know.