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19 Spanning Tree Protocol
19.7 Configuration of Single Spanning Tree
19.7.1 List of configuration commands
The following table describes the commands used to configure Single Spanning Tree.
Table 19-13 List of configuration commands
Command name
spanning-tree cost
spanning-tree pathcost method
spanning-tree port-priority
spanning-tree single
spanning-tree single cost
spanning-tree single forward-time
spanning-tree single hello-time
spanning-tree single max-age
spanning-tree single pathcost method
spanning-tree single port-priority
spanning-tree single priority
spanning-tree single transmission-limit
19.7.2 Configuring Single Spanning Tree
Points to note
You can start and stop Single Spanning Tree. Single Spanning Tree does not run
simply by setting the
according to settings.
VLAN 1 (default VLAN) and Single Spanning Tree cannot be used at the same time.
When Single Spanning Tree is set, the VLAN 1 PVST+ stops.
Command examples
1.
(config)# spanning-tree single
Causes Single Spanning Tree to run. This setting stops the VLAN 1 PVST+, making
VLAN 1 a Single Spanning Tree target.
2.
(config)# no spanning-tree single
Stops Single Spanning Tree. When a VLAN 1 PVST+ is not set to be stopped, and
250 PVST+ instances are not already running, VLAN 1 PVST+ operation starts
automatically.
318
Description
Sets the path cost for a port.
Sets the margin of values used for path costs for a port.
Sets the port priority for a port.
Starts or stops Single Spanning Tree.
Sets the path cost value for Single Spanning Tree.
Sets the time required for port status transitions.
Sets the sending interval for BPDUs.
Sets the maximum enabled time for sent BPDUs.
Sets the margin of values used for path costs for Single
Spanning Tree.
Sets the port priority for Single Spanning Tree.
Sets the bridge priority.
Sets the maximum number of BPDUs that can be sent
hello-time
per
pvst
or
rapid-pvst
operation mode, but start operation
interval.
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