Enterasys ssr-atm29-02 Betriebsanweisung

Chapter 6: Configuring SSR Bridging

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CoreWatch User’s Guide

The maximum age is the length of time the SSR keeps the STP-protocol information it 
receives. You can specify a number from 6 to 40. The default is 20.

8.

In the Forward Delay box, enter the number of seconds you want to elapse between 
the transitions of the different STP states. 

Specify a number from 4 to 30. The default is 15.

9.

Click OK.

The SSR bridge will use the specified STP settings. However, individual ports also have 
STP settings that you can configure as discussed in 

.

Defining STP Attributes on an Individual Port

In addition to the global STP settings discussed in 

, the SSR uses the following STP attributes that are set on individual 

ports. 

•

Port  priority

The STP algorithm uses the port priority to determine which port to use if a bridge has 
two ports connected in a loop.

•

Port  cost

This attribute specifies how much a port contributes to the total cost of the path to the 
root bridge when the port is the root.

A port uses the default settings for these attributes. You may, however, change these 
default settings on individual ports. To change a port’s priority or cost:

1.

Start Configuration Expert if you have not already done so. 

2.

Open the configuration file you want to modify and then double-click that file’s 
Bridging Configuration object.

3.

Double-click the Spanning Tree Protocol object.

4.

In the list of STP objects that appears, double-click the Port Specific STP Settings 
object.

Configuration Expert displays the Configure New Port object and objects for any 
previously configured ports.

5.

Do one of the following:

–

If you are configuring a port’s STP attributes for the first time, select the Configure 
STP Settings on a New Port object.

–

If you are modifying existing STP settings of a port, select that port’s object from 
the list that appeared after you expanded the Port Specific STP Settings object.