18 spanning-tree mst instance, 19 spanning-tree mst priority – PLANET WGS3-2820 User Manual

Page 426

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User’s Manual of WGS3-2820/WGS3-5220

426

CIST ID) is passed as the <mstid>, then the configurations are performed for the common and internal spanning tree instance.

If the 'cost' token is specified, this command sets the path cost for this port within a multiple spanning tree instance or the

common and internal spanning tree instance, depending on the <mstid> parameter, to the default value, i.e. a pathcost value

based on the Link Speed.

If the 'port-priority' token is specified, this command sets the priority for this port within a specific multiple spanning tree instance

or the common and internal spanning tree instance, depending on the <mstid> parameter, to the default value, i.e. 128.

Format

no spanning-tree mst <mstid> {cost | port-priority}

Mode

Interface Config

11.1.18 spanning-tree mst instance

This command adds a multiple spanning tree instance to the switch. The instance <mstid> is a number within a range of 1 to

4094, that corresponds to the new instance ID to be added. The maximum number of multiple instances supported by this

switch is 4.

Format

spanning-tree mst instance <mstid>

Mode

Global Config

11.1.18.1 no spanning-tree mst instance

This command removes a multiple spanning tree instance from the switch and reallocates all VLANs allocated to the deleted

instance to the common and internal spanning tree. The instance <mstid> is a number that corresponds to the desired existing

multiple spanning tree instance to be removed.

Format

no spanning-tree mst instance <mstid>

Mode

Global Config

11.1.19 spanning-tree mst priority

This command sets the bridge priority for a specific multiple spanning tree instance. The instance <mstid> is a number that

corresponds to the desired existing multiple spanning tree instance. The priority value is a number within a range of 0 to 61440

in increments of 4096.

If 0 (defined as the default CIST ID) is passed as the <mstid>, then this command sets the Bridge Priority parameter to a new

value for the common and internal spanning tree. The bridge priority value again is a number within a range of 0 to 61440. The

twelve least significant bits will be masked according to the 802.1s specification. This will cause the priority to be rounded down

to the next lower valid priority.

Default 32768

Format

spanning-tree mst priority <mstid> <0-61440>

Mode

Global Config

11.1.19.1 no spanning-tree mst priority

This command sets the bridge priority for a specific multiple spanning tree instance to the default value, i.e. 32768. The instance

<mstid> is a number that corresponds to the desired existing multiple spanning tree instance.

If 0 (defined as the default CIST ID) is passed as the <mstid>, then this command sets the Bridge Priority parameter for the

common and internal spanning tree to the default value, i.e. 32768.

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