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Sets the Spanning Tree operating mode to
VLANs.
2.
(config)# spanning-tree vlan 10 mode rapid-pvst
Changes the operating mode of VLAN 10 to Rapid PVST+. Other port VLANs are
run using PVST+, and VLAN 10 is run using Rapid PVST+.
3.
(config)# spanning-tree single
Causes Single Spanning Tree to run. This is applied to VLANs for which PVST+ is
not used. By default, STP is used for operation.
4.
(config)# spanning-tree single mode rapid-stp
Changes Single Spanning Tree to Rapid STP.
(2) Setting the rapid-pvst operating mode
Points to note
Set the operating mode of a switch to
Rapid PVST+ is automatically run on the VLAN. Each VLAN can be changed to
PVST+.
Single Spanning Tree is not run by default, but can be run through settings. Keep in
mind that when
Tree default is STP.
Command examples
1.
(config)# spanning-tree mode rapid-pvst
Sets the Spanning Tree operating mode to
automatically run for port VLANs.
2.
(config)# spanning-tree vlan 10 mode pvst
Changes the operating mode of VLAN 10 to PVST+. Other port VLANs are run using
Rapid PVST+, and VLAN 10 is run using PVST+.
3.
(config)# spanning-tree single
Causes Single Spanning Tree to run. This is applied to VLANs for which PVST+ is
not used. By default, STP is used for operation.
4.
(config)# spanning-tree single mode rapid-stp
Changes Single Spanning Tree to Rapid STP.
(3) Setting the mst operating mode
Points to note
When Multiple Spanning Tree is used, the switch operating mode is set to
Multiple Spanning Tree is applied to all VLANs. When Multiple Spanning Tree is used,
PVST+ and Single Spanning Tree cannot be used together.
rapid-pvst
is specified for the operating mode, the Single Spanning
19 Spanning Tree Protocol
pvst
. PVST+ is automatically run for port
rapid-pvst
. When a port VLAN is created,
rapid-pvst
. Rapid PVST+ is
mst
.
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