My goal is to establish specific root bridges for certain VLAN traffic. I have 1 core switch that will be the root bridge for about half the VLANs and the secondary bridge for the rest of the VLANs. There are 3 distribution switches which will serve as the root bridge for certain VLANs. Does this look like a good configuration?
Core Switch
Root bridge for VLANs 10,20,30-31,50,70-71
Secondary bridge for VLANs 32,60-61,80-82,90-91,100
spanning-tree mst configuration
name campus
revision 3
instance 1 vlan 10,20,30-31,50,70-71
instance 2 vlan 32,80,82,90,91,100
instance 3 vlan 60-61
instance 4 vlan 81
spanning-tree mst 0 priority 20480
spanning-tree mst 1 priority 24576
spanning-tree mst 2-4 priority 28672
Distribution Switch 1
Root bridge for VLANs 32,80,82,90,91,100
spanning-tree mst configuration
name campus
revision 3
instance 1 vlan 10,20,30-31,50,70-71
instance 2 vlan 32,80,82,90,91,100
instance 3 vlan 60-61
instance 4 vlan 81
spanning-tree mst 2 priority 24576
Distribution Switch 2
Root bridge for VLANs 60-61
spanning-tree mst configuration
name campus
revision 3
instance 1 vlan 10,20,30-31,50,70-71
instance 2 vlan 32,80,82,90,91,100
instance 3 vlan 60-61
instance 4 vlan 81
spanning-tree mst 3 priority 24576
Distribution Switch 3
Root bridge for VLAN 81
spanning-tree mst configuration
name campus
revision 3
instance 1 vlan 10,20,30-31,50,70-71
instance 2 vlan 32,80,82,90,91,100
instance 3 vlan 60-61
instance 4 vlan 81
spanning-tree mst 4 priority 24576
Access Switches
spanning-tree mst configuration
name campus
revision 3
instance 1 vlan 10,20,30-31,50,70-71
instance 2 vlan 32,80,82,90,91,100
instance 3 vlan 60-61
instance 4 vlan 81
