Allied Telesis AT-S60 - Manual (Page 231)

Chapter 12: STP, RSTP, and MSTP
Section II: Local and Telnet Management 230
8 - Bridge Identifier
The MAC address of the bridge. The bridge identifier is used as a
tie breaker in the selection of a root bridge when two or more
bridges have the same bridge priority value. This value cannot be
changed.
4. After making changes, type R until you return to the Main Menu. Then
type S to select Save Configuration Changes.
Configuring the
CIST Priority
This procedure explains how to adjust the bridge’s CIST priority.
To change the CIST priority, do the following:
1. From the MSTP Menu, type to select C to select CIST Menu.
The CIST Menu is shown in Figure 83.
Figure 83 CIST Menu
The CIST Priority field in the menu displays the current value for
this MSTP parameter. This number is used in determining the root
bridge of the network spanning tree. This number is analogous to
the RSTP bridge priority value. The bridge in the network with the
lowest priority number is selected as the root bridge. If two or
more bridges have the same bridge or CIST priority values, the
bridge with the numerically lowest MAC address becomes the
root bridge.
The Associated VLANs field displays the VIDs of the VLANs that are
currently associated with CIST and have not been assigned to a
MSTI.
2. To change the CIST priority, type 1.
The following prompt is displayed:
Allied Telesyn AT-8400 Series - ATS60 V2.0.0
High School Switch 142
User: Manager 00:14:33 15-Jan-2003
CIST Menu
CIST Priority ............. 32768
Associated VLANs .......... 1,2,4,11
1 - Modify CIST Priority
R - Return to Previous Menu
Enter your selection?