Web Management Guide-R01

Table Of Contents
Chapter 7
| Spanning Tree Algorithm
Displaying Interface Settings for STA
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bridge ports, or LANs fail or are removed. The role is set to disabled (i.e.,
disabled port) if a port has no role within the spanning tree.
Figure 124: STA Port Roles
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.
Alternate port receives more
useful BPDUs from another
bridge and is therefore not
selected as the designated
port.
x
R: Root Port
A: Alternate Port
D: Designated Port
B: Backup Port
RR
ADB
Backup port receives more
useful BPDUs from the same
bridge and is therefore not
selected as the designated
port.
x
RR
ADB