3Com 10014299 manual Configure the bridge priority, Configure the path cost of bridge port

300 CHAPTER 19: CONFIGURING BRIDGE

Table 327 Configure the bridge priority

Operation	Command
Configure the bridge priority	bridge stp priority value
Restore the default value of the bridge priority	undo bridge stp priority

By default, the bridge priority is 32768. It is valued in the range of 0 to 65535.

cConfigure the path cost of bridge port

The path cost of the port is related to its link speed. The higher the link speed is, the lower the path cost should be configured. If the port is configured with the default path cost, STP will automatically detect the current link speed of the port and accordingly compute the path cost on the port.

Perform the following configuration in interface view.

Table 328 Configure the path cost of bridge port

Operation	Command
Configure the path cost of bridge port	bridge set bridge-setstp port
	pathcost cost
Restore the path cost on the bridge port to the	undo	bridge-set bridge-setstp
default value	port	pathcost

By default, the path cost of Ethernet port is 100, and the path cost of serial interface is 647. It is valued in the range 1 to 65535.

dConfigure the bridge port priority

In the case that path costs of the ports are the same, the port with lower ID is more likely to become the designated port. The port ID is comprised of Port Priority and Port Number. The smaller the port priority, the smaller the bridge port ID will be. Changing the bridge port priority will cause recomputation of the spanning tree. If all the bridge ports adopt the same priority, the smaller the port number is, the smaller the port ID will be.

Perform the following configuration in interface view.

Table 329 Configure the bridge port priority

Operation	Command
Configure the bridge port priority	bridge-set bridge-setstp port
	priority value
Restore the default value of the bridge port	undo bridge-set bridge-setstp
priority	priority

By default, the bridge port priority is 128. It is in the range of 0 to 255.

eConfigure the interval for sending BPDUs

The Hello Time timer is used to control the interval to send BPDUs. Whenever a port enables the STP, it enables the Hello Time timer. Appropriate Hello Time ensures that the bridge can detect the link fault in the network promptly without consuming too many network resources.

Perform the following configuration in system view.