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19 Spanning Tree Protocol
19.2 Configuration of the Spanning Tree operating mode
The following explains settings for the Spanning Tree operating mode.
If the Switch is started without a configuration being set, it runs in the
19.2.1 List of configuration commands
The following table describes the commands used to configure the spanning-tree operating
mode.
Table 19-7 List of configuration commands
Command name
spanning-tree disable
spanning-tree mode
spanning-tree single mode
spanning-tree vlan mode
19.2.2 Configuring the operating mode
The operating mode of a switch can be set so that various Spanning Tree Protocols can be
used. The table below describes the switch operating modes. If no operating mode is set,
operation is performed in pvst mode.
Keep in mind that when
Spanning Tree default is STP.
Table 19-8 Spanning Tree operation modes
Command name
spanning-tree disable
spanning-tree mode pvst
spanning-tree mode rapid-pvst
spanning-tree mode mst
(1) Setting the pvst operation mode
Points to note
You can set the switch operating mode to
PVST+ is automatically run on the VLAN. Each VLAN can be changed to Rapid
PVST+.
Single Spanning Tree is not run by default, but can be run through settings.
Operation uses STP by default, but can be changed to Rapid STP.
Command examples
1.
(config)# spanning-tree mode pvst
304
Description
Stops the Spanning Tree functionality.
Sets the operating mode for Spanning Tree functionality.
Selects STP and Rapid STP for Single Spanning Tree.
Selects PVST+ and Rapid PVST+ for each VLAN.
rapid-pvst
is specified for the operating mode, the Single
Description
Disables the Spanning Tree Protocol.
Allows Single Spanning Tree to be used with PVST+. PVST+ is used
for operation by default. Single Spanning Tree is not run by default.
Allows Single Spanning Tree to be used with PVST+. Rapid PVST+
for rapid Spanning Tree Protocols is run by default. Single Spanning
Tree is not run by default.
Runs Multiple Spanning Tree.
pvst
pvst
. When a port VLAN is created,
operating mode.
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