Chapter 13 Spanning Tree Protocol

The following table describes the labels in this screen.

Table 33 Advanced Application > Spanning Tree Protocol > Status: MSTP

LABEL

DESCRIPTION

Configuration

Click Configuration to specify which STP mode you want to activate.

 

Click MSTP to edit MSTP settings on the Switch.

 

 

CST

This section describes the Common Spanning Tree settings.

 

 

Bridge

Root refers to the base of the spanning tree (the root bridge). 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.

 

 

Hello Time

This is the time interval (in seconds) at which the root switch transmits

(second)

a configuration message.

 

 

Max Age

This is the maximum time (in seconds) the Switch can wait without

(second)

receiving a configuration message before attempting to reconfigure.

 

 

Forwarding

This is the time (in seconds) the root switch will wait before changing

Delay (second)

states (that is, listening to learning to forwarding).

 

 

Cost to Bridge

This is the path cost from the root port on this Switch to the 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 Spanning Tree.

 

 

Configuration

This field displays the configuration name for this MST region.

Name

 

 

 

Revision

This field displays the revision number for this MST region.

Number

 

 

 

Configuration

A configuration digest is generated from the VLAN-MSTI mapping

Digest

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

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

Changed Times

 

 

 

Time Since Last

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

Change

 

 

 

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.

 

 

MGS3700-12C User’s Guide

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ZyXEL Communications metrogigabit switch manual 167, Cst, Msti
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metrogigabit switch specifications

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