RuggedCom RS400 manual MST Region Identifier, Synopsis Any 32 characters Default 00-0A-DC-00-41-74

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5.4.3 MST Region Identifier

Figure 103: MST Region Identifier Table

Name

Synopsis: Any 32 characters

Default: 00-0A-DC-00-41-74

Variable length text string. You must configure an identical region name on all switches you want to be in the same MST region.

Revision Level

Synopsis: 0 to 65535

Default: 0

Use this parameter, if you want to create a new region from a subset of switches in a current region, while maintaining the same region name.

Digest

Synopsis: 32 hex characters

This is a read-only parameter and should be only used for network troubleshooting.

In order to ensure consistent VLAN-to-instance mapping, it is necessary for the protocol to be able to exactly identify the boundaries of the MST regions. For that purpose, the characteristics of the region are included in BPDUs. There is no need to propagate the exact VLAN-to-instance mapping in the BPDUs because switches only need to know whether they are in the same region as a neighbor. Therefore, only this 16-octet digest created from the VLAN-to-instance mapping is sent in BPDUs.

RS400 153 ROS™ v3.5