Cabletron Systems 9A128-01 Manual De Usuario

Bridge Spanning Tree

5-19

Bridging

To change the part of the bridge address that contains the identifier used in the 
Spanning Tree Algorithm for priority comparisons:

1.

Highlight the Bridge Priority field.

2.

Enter the new identifier, in hexadecimal format; the allowed range is 0-FFFF 
hexadecimal.

3.

Click on Set.

The selected Bridge Priority will be applied to the bridge (a lower number 
indicates a higher priority in the root selection process).

To change the type of protocol used in Spanning Tree:

1.

Click the mouse on the appropriate option button: IEEE 802.1, DEC, or None.

2.

Click on Set.

The selected Spanning Tree Algorithm protocol type will be applied to the bridge. 
If you selected None, the Spanning Tree Algorithm will be disabled (if it already 
was enabled). If STA Protocol Type was changed from None to IEEE 802.1 or DEC, 
you must restart the bridge for the newly selected STA protocol to be applied.

If the bridge is the Root Bridge, or is attempting to become the Root, and you 
want to change the length of time the bridge waits between sending configuration 
BPDUs:

1.

Highlight the Hello Time field, and type in a new value.

2.

Click on Set.

The IEEE 802.1d specification recommends that Hello Time = 2 seconds; the 
allowable range is 1 to 10 seconds.