has anyone used cat 3750 stacking with Multiple spanning tree (802.1s) active to group vlans on the stacking switches?
in the attachment, i have two 3750 in the stack. the top switch is the master with Vlan 4 active on all ports and trunking to core 1. the seconda switch is the slave, also trunked to core 2 and vlan 5 active on all ports. the idea is to have just 2 MST instance active within the stack ring.
If trunk on the slave to core 2 fails, all traffic for vlan 5 should go through the trunk to core 1 through the master switch.
These statements are true when the switch stack is operating in PVST+ or rapid-PVST+ mode:
â¢A switch stack appears as a single spanning-tree node to the rest of the network, and all stack members use the same bridge ID for a given spanning tree. The bridge ID is derived from the MAC address of the stack master.
Try to look what happens with MST starting from that link above
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