Multiple Spanning Tree Protocol (MSTP)
Multiple Spanning Tree Protocol as defined in IEEE802.1s or IEEE802.1Q-2005 provides the ability to manage multiple VLANs from a single Multiple Spanning Tree (MST) instance. MST allows the formation of MST regions that can run multiple MST instances (MSTIs). Multiple regions and other STP bridges interconnect using one single common spanning tree (CST).
MSTP regions define a collection of switches with the same VLANs on all of the switches. Each MST region must a root bridge. The root bridge may not reside outside of the region.Netvisor ONE supports a single MST for a single region. This enables multiple MST instances within a single region.
The following commands support the configuration of MST instances on a local switch:
CLI network-admin@Leaf1 > mst-config-create
instance-id id
Specify the ID as a number between 0 and 63 for MST configuration.
vlans vlan-list
Specify the list of VLANs associated with the MST configuration
bridge-priority bridge-priority-number
Specify the bridge priority number for MST.
Additional commands for MST include the following:
l mst-config-delete
l mst-config-modify
l mst-config-show
To configure MST, use the following commands:
CLI network-admin@Leaf1 > mst-config-create instance-id 1-63 vlans vlan-list bridge-priority 4096
Netvisor ONE defines the bridge priority as a value from 0 to 65536, with a default value of 0. The value increments by 4096 each time. For example, the values can be 0, 4096, 8192, up to 65536.