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Chapter 13 Spanning Tree Protocol

GS2200-8/24 User’s Guide

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13.10 Technical Reference

This section provides technical background information on the topics discussed in this chapter.

Port ID This is the priority and number of the port on the Switch through which this Switch must

communicate with the root of the Spanning Tree.

Configuration

Name

This field displays the configuration name for this MST region.

Revision Number This field displays the revision number for this MST region.

Configuration

Digest

A configuration digest is generated from the VLAN-MSTI mapping information.

This field displays the 16-octet signature that is included in an MSTP BPDU. This field

displays the digest when MSTP is activated on the system.

Topology Changed

Times

This is the number of times the spanning tree has been reconfigured.

Time Since Last

Change

This is the time since the spanning tree was last reconfigured.

Instance: These fields display the MSTI to VLAN mapping. In other words, which VLANs run on each

spanning tree instance.

Instance This field displays the MSTI ID.

VLAN This field displays which VLANs are mapped to an MSTI.

MSTI Select the MST instance settings you want to view.

Bridge Root refers to the base of the MST instance. Our Bridge is this switch. This Switch may

also be the root bridge.

Bridge ID This is the unique identifier for this bridge, consisting of bridge priority plus MAC address.

This ID is the same for Root and Our Bridge if the Switch is the root switch.

Internal Cost This is the path cost from the root port in this MST instance to the regional root switch.

Port ID This is the priority and number of the port on the Switch through which this Switch must

communicate with the root of the MST instance.

Table 36 Advanced Application > Spanning Tree Protocol > Status: MSTP (continued)

LABEL DESCRIPTION