Siemens SCALANCE XR-500 Configuration Manual

Network structures
6.3 Spanning Tree
SCALANCE XM-400/XR-500 Command Line Interface (CLI)
Configuration Manual, 11/2015, C79000-G8976-C252-10
231
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 / note
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 configuration 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 sec-
onds
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
•
max-age
≥ 2 * (
hello-time
+ 1)
Result
The selected setting for the time is configured.
Further notes
You reset the time settings to the default values with the no spanning-tree forward-time, no
spanning-tree
hello-time or no spanning-tree max-age.
If you call the
no spanning-tree command without parameters, you disable the spanning tree
function. The configured time settings are retained.
If you call the
restart factory command, the system restarts with the factory configuration
settings All rime settings are reset.
You display these settings and other information with the commands that start with
show
spanning-tree ...
.

Siemens SCALANCE XR-500 Specifications

General

Brand	Siemens
Model	SCALANCE XR-500
Category	Switch
Language	English