
Multiple Instance
Configuring MSTP
■Flexibility: By preconfiguring identical VLAN
■Network stability: You can reduce the interruptions in network connec- tivity caused by the regeneration of spanning trees in the entire network each time a configuration change in
Later, VLAN creation and deletion are ignored by MSTP and no interrup- tion in
■Usability: Dynamically learned GVRP VLANs can be mapped to MSTIs and support MSTP load balancing.
PreConfiguring VLANs in an MST Instance
When you configure an MSTP regional topology, you create multiple spanning- tree instances. Each MST instance provides a fully connected active topology for a particular set of VLANs.
Each switch in an MSTP region is configured with the following set of common parameters:
■Region name■Identical VLAN
Each MST instance supports a different set of VLANs. A VLAN that is mapped to an MST instance cannot be a member of another MST instance.
The MSTP VLAN configuration enhancement allows you to ensure that the same VLAN