Matching Values for MSTP Region

ACE

In order for two switches to participate in the same Multiple Spanning Tree Protocol (MSTP) region, the following three values must match:

1. Region name: The MSTP region name is a user-defined alphanumeric string that is used to identify the group of switches that will be participating in the same MSTP region. All switches that are part of the same MSTP region must have the same region name. This is important because the region name is used to identify the MSTP configuration information that will be exchanged between the switches.

2. Revision number: The MSTP revision number is used to identify the current MSTP configuration for a particular MSTP region. All switches that are part of the same MSTP region must have the same revision number. This is important because it ensures that all switches are using the same MSTP configuration and are therefore able to communicate and participate in the same MSTP region.

3. Member VLAN ID list: The MSTP member VLAN ID list is a list of all the VLANs that are allowed to participate in the MSTP region. All switches that are part of the same MSTP region must have the same member VLAN ID list. This is important because it ensures that all switches are using the same set of VLANs for MSTP and are therefore able to communicate and participate in the same MSTP region.

Note that the extended system ID and root bridge ID are not required to match for switches to participate in the same MSTP region, although they may be important in other aspects of MSTP operation. The extended system ID is used to distinguish between switches with the same bridge ID, while the root bridge ID is used to determine the root bridge for the MSTP region.