1-32[Sysname] stp interface Ethernet 1/0/2 to Ethernet 1/0/4 point-to-point force-truestp port prioritySyntaxz Ethernet port view:stp [ instance instance-id ] port priority priorityundo stp [ instance instance-id ] port priorityz System view:stp interface interface-list instance instance-id port priority priorityundo stp interface interface-list instance instance-id port priorityViewSystem view, Ethernet port viewParametersinstance-id: MSTI ID ranging from 0 to 16. The value of 0 refers to the CIST.port priority priority: Sets the port priority. The priority argument ranges from 0 to 240 and must be amultiple of 16 (such as 0, 16, and 32).interface-list: Ethernet port list. You can specify multiple Ethernet ports by providing this argument in theform of interface-list = { interface-type interface-number [ to interface-type interface-number ] } &<1-10>,where &<1-10> means that you can provide up to 10 port indexes/port index ranges for this argument.Descriptionz Use the stp port priority command to set the port priority of the current port in the specified MSTI.Use the undo stp port priority command to restore the default port priority of the current port inthe specified MSTI.z Use the stp interface port priority command to set a port priority for the specified ports in thespecified MSTI in system view. Use the undo stp interface port priority command to restore thedefault priority of the specified ports in the specified MSTI in system view.The default port priority of a port in any MSTI is 128.If you specify the instance-id argument to 0 or do not specify the argument, the two commands apply tothe port priorities of ports on the CIST. The role a port plays in a MSTI is determined by the port priorityin the instance. A port on a MSTP-enabled switch can have different port priorities and play differentroles in different MSTIs. This enables packets of different VLANs to be forwarded along differentphysical links, so as to implement VLAN-based load balancing. Changing port priorities result in portrole recalculation and state transition.Examples# Set the port priority of Ethernet 1/0/1 in MSTI 2 to 16.z Set the port priority of Ethernet 1/0/1 in MSTI 2 to 16 in Ethernet port view. system-viewSystem View: return to User View with Ctrl+Z.[Sysname] interface Ethernet 1/0/1[Sysname-Ethernet1/0/1] stp instance 2 port priority 16
