Network structures
6.3 Spanning Tree
SCALANCE W760/W720 to IEEE 802.11n Command Line Interface
240
Configuration Manual, 11/2014, C79000-G8976-C351-03
Syntax
Call up the command with the following parameters:
spanning-tree{forward-time<seconds(4-30)>|hello-time<seconds(1-2)>|
max-age<seconds(6-40)>}
The parameters have the following meaning:
Parameter
Description
Range of values
forward-time
Keyword for the time after which a port changes its spanning
tree status from "Blocking" to "Forwarding"
-
seconds
Time after which the changeover takes place
4 ... 30
Default: 15
hello-time
Keyword for the time after which the bridge sends its configu-
ration BPDUs
-
seconds
Time after which they are sent
1 ... 2
Default: 2
max-age
Keyword for the time after which the information of the
BPDUs becomes invalid
-
seconds
Maximum age of the BPDUs in seconds
6 ... 40
Default: 20
Note
Dependencies when setting the timing
If you specify the time settings for spanning tree, you need to keep to the following two rules:
2 * (
forward-time
- 1) >=
max-age
and
max-age
>= 2 * (
hello-time
+ 1)
Result
The selected setting for the time is configured.
Further notes
You can reset the time to the default with the
no spanning-tree
command (time settings).
You display these settings and other information with the commands that start with
show
spanning tree ...
.