Allied Telesis Switch AT-9000/28 Manual de usuario descargar pdf (Pagina 142)

Chapter 12: Setting Switch Spanning Tree Protocols

142

Modifying Switch Spanning Tree Protocol Settings

To modify port settings for Spanning Tree Protocol, do the following:

1. Select the Switching tab.

The Switching tab is displayed. See Figure 19 on page 58.

2. From the Switching tab, select Spanning Tree.

The Switch Spanning Tree Settings page is displayed. See Figure 48

on page 139.

3. Change the following settings as needed:

 Active Protocol— Indicates if the active spanning tree protocol is

STP or RSTP. The default setting is RSTP.

 Status— Indicates if the spanning tree protocol is enabled or

disabled on the switch.

 Current Priority— By default, the current priority is set to 32,768.

You cannot change this field.

 New Priority (0-15)— Assigns the switch a priority number. The

device that has the lowest priority number in the spanning tree

domain becomes the root bridge. If two or more devices have the

same priority value, the device with the numerically lowest MAC

address becomes the root bridge.

The range is 0 to 61,440, in increments of 4,096. The range is

divided into the sixteen increments listed in Table 2. You specify

the increment that represents the desired bridge priority value. The

default value is 32,768 (increment 8).

Table 3. STP Bridge Priority Value Increments

Increment

Bridge

Priority

Increment

Bridge

Priority

00832768

1 4096 9 36864

2 8192 10 40960

3 12288 11 45056

4 16384 12 49152

5 20480 13 53248

6 24576 14 57344

1 2 ... 137 138 139 140 141 142 143 144 145 146 147 ... 247 248

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Allied Telesis Switch AT-9000/28 Manual de usuario Pagina 142