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Selection Criteria
MST ID - Create a new MST which you wish to configure or configure already existing MST s.
Configurable Data
MST ID - This is only visible when the sel ect option of the MST ID select box is selected. The ID of the
MST being created. Valid values for this are between 1 and 40 54.
Priority - The bridge priority for the MST instance selected. The bridge priority is set in multiples of
4096. For example if you attempt to set the priority to any value between 0 and 4095, it will be set to 0.
If you attempt to set any value between 4096 and (2*4096-1) it will be set to 4096 and so on.
VLAN ID - This gives a list box of all VLANs on the switch. Th e VLANs associated with the MST
instance which is selected are highlighted on the list. These can be selected or unselected for
re-configuring the association of VLANs to MST instances.
Non-Configurable Da ta
Bridge identifier - The bridge identifier f or the selected MST instance. It is made up usi ng the bridge
priority and the base MAC address of the bridge.
Time since topology change - The time in seconds since the topology of the selecte d MST instance
last changed.
Topology change count - Number of times the topology has changed for the selected MST
instance.
Topology change - The value of the topology change parameter for the switch indicating if a
topology change is in progress on any port assigned to the selecte d MST instance. It takes a value if
True or False.
Designated root - The bridge identifier of the root bridge. It is made up from the bridge priority and
the base MAC address of the bridge
Root Path Cost - Path Cost to the Designated Root for this MST instance.
Root port - Port to access the De signated Root for this MST instance.
Command Buttons
Submit - Applies the new configuration and causes the changes to take effect. These changes will
not be retained across a power cycle unless a save configuration is performed.