Category:Cisco Systems -> Routing and Switching
Ok, until I forget everything I’ve done about 4 years ago and lose all my here-and-there notes I put here an example of MST configuration on one of two core switches. Just for reference, MST was chosen because 3rd party server blade-chassis switches were used in the network.
spanning-tree mode mst
spanning-tree extend system-id
!
spanning-tree mst configuration
name MST
revision 1
instance 1 vlan 800, 815, 821, 823, 825, 827, 835
instance 2 vlan 816, 820, 822, 824, 826, 828, 836
instance 3 vlan 100, 103-104, 106-112
instance 4 vlan 101-102, 105, 113-129
!
spanning-tree mst 0-1,3 priority 0
spanning-tree mst 2,4 priority 4096
There’s a very important issue with MST to start working - its configuration (instances) has to be the same on every adjunct switch.
By privilege15