Spanning-Tree Cost - Edge-Core ES4624-SFP Basic Management Manual

no spanning-tree
Function: Enable MSTP in global mode and in port mode; The command "no
spanning-tree" is to disable MSTP.
Command mode: Global Mode and Port mode
Default: MSTP is not enabled by default.
Usage Guide: If the MSTP is enabled in global mode, the MSTP is enabled in all the
ports except for the ports which are set to disable the MSTP explicitly.
Example: Enable the MSTP in global mode, and disable the MSTP in the interface 1/2.
Switch(config)#spanning-tree
Switch(config)#interface ethernet 1/2
Switch(Config-If-Ethernet1/2)#no spanning-tree

11.3.9 spanning-tree cost

Command: spanning-tree cost <cost>
no spanning-tree cost
Function: Sets path cost of the current port; the command "no spanning-tree cost"
restores the default setting.
Parameter: <cost> sets path cost. The valid range is from 1 to 200,000,000.
Command mode: Port Mode
Default: By default, the port cost is relevant to the port bandwidth.
Port Type
10Mbps
100Mbps
1Gbps
10Gbps
For the aggregation ports, the default costs are as below:
Port Type
10Mbps
100Mbps
1Gbps
10Gbps
Usage Guide: By setting the port cost, users can control the cost from the current port to
the root bridge in order to control the elections of port and the designated port of the
instance.
Example: On the port1/2, set the port cost is 3000000.
Switch(Config-If-Ethernet1/2)#spanning-tree cost 3000000
Default Path Cost
2000000
200000
20000
2000
Allowed Number
Aggregation Ports
N
N
N
N
326
Suggested Range
2000000~20000000
200000~2000000
20000~200000
2000~20000
Of Default Port Cost
2000000/N
200000/N
20000/N
2000/N