If i have the above diagram which includes 2 cores switches and edge switch.
L1 is not trunk port .It is access link in vlan 10.
Sw1 is connected to both of the cores by trunk links .
The Vlan of the Sw1 is 20.
The Core1 is the active for HSRP.
Do i need to force the core 1 to be the root for vlan 20 ?
I think the STP is n ot an issue here can anyone confirm that pls?