Allied Telesis AT-S62 - Manual (Page 526)

Chapter 23: Multiple Spanning Tree Protocol
526 Section IV: Spanning Tree Protocols
Configuring the CIST Priority
This procedure explains how to adjust the bridge’s CIST priority.
Note
You cannot configure MSTP parameters until you have selected the
protocol as the active spanning tree protocol on the switch. For
instructions, refer to “Selecting MSTP as the Active Spanning Tree
Protocol” on page 522.
This procedure starts from the MSTP Menu. If you do not know how to
access the menu, perform steps 1 and 2 in “Configuring MSTP Bridge
Settings” on page 523.
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 179.
Figure 179. CIST Configuration 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.
Allied Telesyn Ethernet Switch AT-8524M - AT-S62
Production Switch
User: Manager 11:20:02 02-Jan-2006
CIST Configuration
CIST Priority ............. 32768
Associated VLANs .......... 1,2,4,11
1 - Modify CIST Priority
R - Return to Previous Menu
Enter your selection?