Siemens S323, S223 user manual Path-cost, Port-priority, 218 A50010-Y3-C150-2-7619

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

8.3.6.2Root Switch

In order establish PVSTP, PVRSTP function, first of all, Root switch should be decided. Each switch has its own Bridge ID and Root switch on same LAN is decided by compar- ing their Bridge ID. However, the user can change Root switch by configuring Priority for it. The switch having the lowest priority is decided as Root switch.

To change Root switch by configuring Priority for it, use the following command.

Command	Mode	Description
stp pvst priority VLAN-RANGE		Configures a priority of switch.
<0-61440>
	Bridge
no stp pvst priority		Clears a priority of switch.
VLAN-RANGE

8.3.6.3	Path-cost
	After deciding Root switch, you need to decide to which route you will forward the packet.
	To do this, the standard is path-cost. Generally, path-cost depends on transmission speed
	of LAN interface in switch. In case the route is overload based on Path-cost, it is better to
	take another route.
	By considering the situation, the user can configure Path-cost of Root port in order to des-
	ignate the route on ones own. To configure Path-cost, use the following command.
	Command	Mode	Description
	stp pvst path-cost VLAN-RANGE PORTS		Configures path-cost to configure route
	<1-200000000>	Bridge	on user’s own.
	no stp pvst path-cost VLAN-RANGE PORTS		Clears path-cost configuration.

8.3.6.4	Port-priority
	When all conditions of two switches are same, the last standard to decide route is port-
	priority. It is also possible to configure port priority so that user can configure route manu-
	ally. To configure port priority, use the following command.
	Command	Mode	Description
	stp pvst port-priority		Configures port-priority.
	VLAN-RANGE PORTS <0-240>
		Bridge
	no stp pvst port-priority		Disables port priority configuration.
	VLAN-RANGE PORTS

218 A50010-Y3-C150-2-7619