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Command: spanning-tree mst configuration
no spanning-tree mst configuration
Function:
Enter the MSTP mode. Under the MSTP mode, the MSTP attributes can be
set. The command “
no spanning-tree mst configuration
” restores the attributes of the
MSTP to their default values.
Command mode:
Global Mode
Default:
The default values of the attributes of the MSTP region are listed as below:
Attribute of MSTP
Default Value
Instance
There is only the instance 0. All the VLANs (1~4094) are
mapped to the instance 0.
Name
MAC address of the bridge
Revision 0
Usage Guide:
Whether the switch is in the MSTP region mode or not, users can enter
the MSTP mode, configure the attributes, and save the configuration. When the switch is
running in the MSTP mode, the system will generate the MST configuration identifier
according to the MSTP configuration. Only if the switches with the same MST
configuration identifier are considered as in the same MSTP region.
Example:
Enter MSTP region mode.
Switch(Config)#spanning-tree mst configuration
Switch(Config-Mstp-Region)#
8.3.16 spanning-tree mst cost
Command:spanning-tree mst <instance-id> cost <cost>
no spanning-tree mst <instance-id> cost
Function:
Sets path cost of the current port in the specified instance; The command “
no
spanning-tree mst <instance-id> cost
” restores the default setting.
Parameter: <instance-id>
sets the instance ID. The valid range is from 0 to 48.
<cost>
sets path cost. The valid range is from 1 to 200,000,000.
Command mode:
Interface Mode
Default:
By default, the port cost is relevant to the port bandwidth.
Port Type
Default Path Cost
Suggested Range
10Mbps 2000000
2000000~20000000
100Mbps 200000
200000~2000000
1Gbps 20000
20000~200000
10Gbps 2000
2000~20000
For the aggregation ports, the default costs are as below:
