Allied Telesis AT-S62 - Manual (Page 525)

AT-S62 Management Software Menus Interface User’s Guide
Section IV: Spanning Tree Protocols 525
5 - Max Hops
MSTP regions use this parameter to discard BPDUs. The Max Hop
counter in a BPDU is decremented every time the BPDU crosses an
MSTP region boundary. Once the counter reaches zero, the BPDU is
deleted. The range is 1 to 40 hops. The default is 20.
6 - Configuration Name
The name of the MSTP region. The range is 0 (zero) to 32
alphanumeric characters in length. The name, which is case-sensitive,
must be the same on all bridges in a region. Examples include Sales
Region and Production Region.
7 - Revision Level
The revision level of an MSTP region. The range is 0 (zero) to 255.
This is an arbitrary number that you assign to a region. The revision
level must be the same on all bridges in a region. Different regions can
have the same revision level without conflict.
8 - Bridge Identifier
The bridge identifier of the switch. The identifier consists of the switch’s
CIST priority value and MAC address, separated by a slash
(/). To change the switch’s priority value, refer to “Configuring the CIST
Priority” on page 526. The MAC address of the switch cannot be
changed.
9 - Root Identifier
The bridge identifier of the root bridge of the CIST spanning tree
domain. The identifier consists of the root switch’s bridge or CIST
priority value and MAC address, separated by a slash (/). If this MAC
address is the same as the current bridge’s MAC address, then the
switch is functioning as a root bridge. If the two MAC addresses are
different, then a different switch is functioning as the root bridge. This
parameter is only displayed with MSTP is enabled.
A - Root Path Cost
The cost of the path from the current switch to the root switch of the
spanning tree domain. If the current switch is the root switch, root path
cost will be “0”. This value cannot be changed and is only displayed
when MSTP is activated on the switch.
4. After making changes, type R until you return to the Main Menu. Then
type S to select Save Configuration Changes.