Qtech QSW-2900-24T4-AC [162/209] Configure mstp netbridge priority

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10.4.4 Configure MSTP netbridge priority
In MSTP, netbridge priority is the parameter based on each STP instance. Netbridge priority and interface path
cost determine the topology of each STP instance which construct the base of link load balance.
Configure it in global configuration mode:
· Configure netbridge priority in MSTP instance
spanning-tree mst instance instance-num priority priority
Example:
! Configure netbridge priority in MSTP instance 4 to be 4096
QTECH(config)#spanning-tree mst instance 4 priority 4096
10.4.5 Configure MSTP interface edge interface status
As SST, interface with edge interface attribution will turn to forwarding if it hasnt received STPpacketafter 2
sending periods when link up.
Configure it in interface configuration mode:
· Configure port to be edge port
spanning-tree mst portfast
! Example:
Configure e0/2 to be edge port
QTECH(config-if-ethernet-0/2)#spanning-tree mst portfast
10.4.6 Configure MSTP interface link type
There are two types of link: one is sharing media (through hub), the other is point-to-point. Link type is used
in suggest-agree mechanism of interface fast shifting. Only point-to-point allows fast shift. Link type can be manual
configured or self-detected by STP protocol.
Configure it in interface configuration mode:
· Configure detection of link type
spanning-tree mst link-type point-to-point { forcetrue | forcefalse | auto }
! Example
Configure link type of e0/2 to be point-to-point
QTECH(config-if-ethernet-0/2)#spanning-tree mst link-type point-to-point forcefalse
10.4.7 Configure MSTP interface path cost
Port path cost can be divided into internal cost and external cost. The former is the configuration parameter
based on each MSTP instance to determine topology of different instance in each MSTP region. The latter is
parameter which has nothing to do with the instance to determine CST topology consisted by each region.
Configure it in interface configuration mode:
· Configure the path cost in some instance

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