Switch 7700 Command reference Guide, v2.0

332 CHAPTER 8: USING STP COMMANDS
Example
Set the path cost of Ethernet5/0/3 on STI 2 to 400 in system view:
[SW7700]stp interface Ethernet5/0/3 instance 2 cost 400
stp interface instance
port priority
Syntax
stp interface interface-list instance instance-id port priority
priority
undo stp interface interface-list instance instance-id port priority
View
System view
Parameter
interface-list: Ethernet port list, containing multiple Ethernet ports and
expressed as
interface _list = { { interface_type interface_num |
interface_name } [ to { interface_type interface_num | interface_name } ]
}&<1-10>. For detail descriptions of
interface_type, interface_num and
interface_name parameters, refer to the corresponding descriptions in Port
Command Manual. &<1-10> means that the preceding parameters can be
entered up to 10 times.
instance instance-id: Specifies the spanning tree instance ID, ranging from 0
to 48. The Instance 0 represents CIST.
port priority priority: Specifies the port priority, ranging from 0 to 240 with
a step length of 16, for example, 0, 16 and 32. By default, the port has a priority
of 128 on every STI.
Description
■ Use the stp interface instance port priority command to configure the
priority of the specified port on the specified STI in system view.
■ Use the undo stp interface instance port priority command to restore
the default priority.
You may specify the instance-id parameter as 0 to configure CIST priority of the
port. The port priority has effect on the port role selection. A port can be
configured with different priorities on different MSTIs. Thus the traffic from
different VLANs can run over different physical links, thereby implementing the
VLAN-based load-balancing. MSTP will recalculate the port role and transit its
state, upon the port priority changes.
Related command: stp instance port priority.
Example
Set the priority of Ethernet5/0/3 on STI 2 to 16 in system view.
[SW7700]stp interface Ethernet5/0/3 instance 2 port priority 16
stp interface
loop-protection
Syntax
stp interface interface-list loop-protection