Web Management Guide

Table Of Contents
Chapter 7
| Spanning Tree Algorithm
Configuring Multiple Spanning Trees
– 188
The criteria used for determining the port role is based on root bridge ID, root
path cost, designated bridge, designated port, port priority, and port number,
in that order and as applicable to the role under question.
Web Interface
To display interface settings for STA:
1.
Click Spanning Tree, STA.
2.
Select Configure Interface from the Step list.
3.
Select Show Information from the Action list.
Figure 97: Displaying Interface Settings for STA
Configuring Multiple Spanning Trees
Use the Spanning Tree > MSTP (Configure Global) page to create an MSTP instance,
or to add VLAN groups to an MSTP instance.
Command Usage
MSTP generates a unique spanning tree for each instance. This provides multiple
pathways across the network, thereby balancing the traffic load, preventing wide-
scale disruption when a bridge node in a single instance fails, and allowing for
faster convergence of a new topology for the failed instance.
Backup port receives more
useful BPDUs from the same
bridge and is therefore not
selected as the designated
port.
x
RR
ADB