Operation Manual – MSTPH3C S3100 Series Ethernet Switches Chapter 1 MSTP Configuration1-41Operation Command DescriptionConfigure port priority forspecified portsstp interface interface-listinstance instance-id portpriority priorityRequiredThe default port priority is128.II. Configure port priority in Ethernet port viewTable 1-33 Configure port priority in Ethernet port viewOperation Command DescriptionEnter system view system-view —Enter Ethernet port view interface interface-typeinterface-number —Configure port priority forthe portstp [ instanceinstance-id ] port prioritypriorityRequired.The default port priority is128.Changing port priority of a port may change the role of the port and put the port intostate transition.A smaller port priority value indicates a higher possibility for the port to become the rootport. If all the ports of a switch have the same port priority value, the port priorities aredetermined by the port indexes. Changing the priority of a port will cause spanning treerecalculation.You can configure port priorities according to actual networking requirements.III. Configuration example# Configure the port priority of Ethernet1/0/1 in spanning tree instance 1 to be 16.1) Perform this configuration in system view system-view[Sysname] stp interface Ethernet1/0/1 instance 1 port priority 162) Perform this configuration in Ethernet port view system-view[Sysname] interface Ethernet1/0/1[Sysname-Ethernet1/0/1] stp instance 1 port priority 161.4.9 Specifying Whether the Link Connected to a Port Is a Point-to-pointLinkRefer to section 1.3.13 “Specifying Whether the Link Connected to a Port IsPoint-to-point Link”.
