Hey, I was able to test this out in my lab this morning and everything worked as expected! I was using Rapid-PVST on the switches and layer 2 subinterfaces for the VLANs on the PAN. I attached a screenshot of the network tab on the PAN for reference. Everything is layer 2. I'm pretty excited because this gives me a lot of flexability for testing/troubleshooting along with the added benefits of link failover. Let me know if you have any questions. 2960-LAB ! interface GigabitEthernet0/45 description PAN LAB TRUNK SECONDARY switchport trunk allowed vlan 10,40 switchport mode trunk spanning-tree vlan 10,40 cost 1000 ! interface GigabitEthernet0/46 description PAN LAB TRUNK PRIMARY switchport trunk allowed vlan 10,40 switchport mode trunk ! 3560-LAB ! interface GigabitEthernet0/41 description PAN LAB TRUNK SECONDARY switchport trunk encapsulation dot1q switchport trunk allowed vlan 10,40 switchport mode trunk spanning-tree vlan 10,40 cost 1000 ! interface GigabitEthernet0/42 description PAN LAB TRUNK PRIMARY switchport trunk encapsulation dot1q switchport trunk allowed vlan 10,40 switchport mode trunk !
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