Siemens S323 User Manual

User Manual                                                                               UMN:CLI 
SURPASS hiD 6615 S223/S323 R1.5 

A50010-Y3-C150-2-7619                                                                         217 

STP and RSPT are designed with one VLAN in the network. If a port becomes blocking 
state, the physical port itself is blocked. But PVSTP (Per VLAN Spanning Tree Protocol) 
and PVRSTP (Per VLAN Rapid Spanning Tree Protocol) maintains spanning tree in-
stance for each VLAN in the network. Because PVSTP treats each VLAN as a separate 
network, it has the ability to load balance traffic by forwarding some VLANs on one trunk 
and other VLANs. PVRSTP provides the same functionality as PVSTP with enhancement. 

 

Example of PVSTP 

 

To configure PVSTP or PVRSTP, configure force-version in order to decide the mode. In 
order to decide force-version, use the following command.   

 VLAN-RANGE Bridge 

Activates PVSTP or PVRSTP function. 
VLAN-RANGE : Vlan name   

 

PVSTP is activated after selecting PVSTP in Force-version using the above command 
and PVRSTP is activated after selecting PVRSTP using the above commands. In PVSTP 
and PVRSTP, it is possible to configure only the current VLAN. If you input VLAN that 
does not exist, error message is displayed. 

For the switches in LAN where dual path doesn’t exist, Loop does not generate even 
though STP function is not configured. To disable configured PVSTP, PVRSTP, use the 
following command. 

Bridge 

Disables PVSTP or PVRSTP in VLAN.