Siemens SIMATIC NET Configuration Manual

Network structures
6.3 Spanning Tree
SCALANCE W760/W720 to IEEE 802.11n Command Line Interface
Configuration Manual, 10/2015, C79000-G8976-C351-05
263
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 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 ...
.
no spanning-tree
Description
With this command, you reset the various time settings of the spanning tree function to the
default value.
The default values are as follows:
Parameter
Default value
forward-time
15 seconds
hello-time
2 seconds
max-age
20 seconds
Requirement
You are in the Global configuration mode.
The command prompt is as follows:
cli(config)#

Siemens SIMATIC NET Specifications

General

Category	Industrial Communication Software
Manufacturer	Siemens
Operating Systems	Windows, Linux
Protocols Supported	PROFIBUS, PROFINET, OPC UA
Compatibility	Siemens PLCs, Third-party devices with supported protocols