Switching Commands
38
ProSAFE M7100 Managed Switches
If you specify external-cost, this command sets the external path cost for this port for mst ‘0’
instance, to the default value, that is, a path cost value based on the Link Speed.
If you specify port-priority, 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.
spanning-tree mst instance
This command adds a multiple spanning tree instance to the switch. The parameter <mstid> is a
number within a range of 1–4094, that corresponds to the new instance ID to be added. The
maximum number of multiple instances supported by the switch is 4.
no spanning-tree mst instance
This command removes a multiple spanning tree instance from the switch and reallocates all
VLANs alloc
ated to the deleted instance to the Common and Internal Spanning Tree. The
parameter <mstid> is a number that corresponds to the desired existing multiple spanning tree
instance to be removed.
spanning-tree mst priority
This command sets the bridge priority for a specific multiple spanning tree instance. The
parameter <mstid> is a number that corresponds to the desired existing multiple spanning tree
instance. The priority value is a number within a range of 0–61440 in increments of 4096.
If you specify 0 (defined as the default CIST ID) as the <mstid>, this command se
ts the Bridge
Priority parameter to a new value for the Common and Internal Spanning Tree. The bridge
priority value is a number within a range of 0–61440. The twelve least significant bits are
masked according to the 802.1s specification. This causes the priority to be rounded down to the
next lower valid priority.
Format no spanning-tree mst <mstid> [cost | external-cost | port-priority]
Mode Interface Config
Default none
Format spanning-tree mst instance <mstid>
Mode Global Config
Format no spanning-tree mst instance <mstid>
Mode Global Config
Default 32768
Format spanning-tree mst priority <mstid> <0-61440>
Mode Global Config
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