Fujitsu Siemens Computers PRIMERGY BX, Description

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Spanning Tree Commands Command Reference
Lan Switch and Router Blade
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7.6 Spanning Tree Commands
This section provides detailed explanation of the spanning tree commands. Due the IEEE
requirement, the basic spanning tree (STP, 802.1d) will be removed, the STP will be simulated
in the satge of the mutli-spanning tree (MSTP, 802.1s). So the basic five stages will be different
from the traditiaonal phases. It doesn’t influnced the basic spanning tree function. This is not
conflict point of the view.
The commands are divided into two functional groups:
z Show commands display spanning tree settings, statistics, and other information.
z
Configuration Commands configure features and options of the switch. For every
configuration command there is a show command that displays the configuration
setting.
7.6.1 Show Commands
7.6.1.1 show spanning-tree
This command displays spanning tree settings for the common and internal spanning tree. The
following details are displayed.
Syntax
show spanning-tree
Default Setting
None
Command Mode
Privileged Exec
Display Message
Bridge Priority:
Configured value.
Bridge Identifier:
The MAC Address for the Bridge from which the Bridge Identifiers used by
the Spanning Tree Algorithm and Protocol.
Time Since Topology Change:
In seconds.
Topology Change Count:
Number of times changed.
Topology Change in progress:
Boolean value of the Topology Change parameter for the
switch indicating if a topology change is in progress on any port assigned to the common and
internal spanning tree.
Designated Root:
The Bridge Identifier of the Root Bridge for the spanning tree instance
identified by the MSTID.
Root Path Cost:
Value of the Root Path Cost parameter for the common and internal