CIST and MSTI Parameters

Bridge Priority

0-61440, 4096 as the spacing

Displays and sets the bridge priority.

The bridge priority determines whether the switch can be used as the root bridge of the spanning tree. Set a low priority to specify a switch as the root of the spanning tree. In the case of different spanning tree instances, one switch that supports the MSTP protocol may be of different priorities.

Port

• Equipment that supports the master and slave shelf management: shelf ID(shelf name)-slot number-board name-port number(port name)
• Equipment that does not support the master and slave shelf management: slot number-board name-port number(port name)

Displays the port.

Bridge Priority

0-240, 16 as the spacing

Displays and sets the port priority.

During calculation of the spanning tree, the role of a port basically depends on the port priority. In the case of different spanning tree instances, one port on the switch that supports the MSTP protocol is of different priorities. Hence, one port plays different roles in different spanning tree instances. In this way, the data of different VLANs is transported along different physical paths and the load is shared per VLAN.

Path Cost

1-200000000

Displays and sets the path cost.

The path cost depends on the rate of the link connected to the port. In the case of the different spanning tree instances, one port on the switch that supports the MSTP protocol may have different path costs. Set proper path costs to forward the traffic of different VLANs along different physical links. In this way, the load is shared per VLAN.