TGPS-9084GT-M12 Series User
Manual
ORing Industrial Networking Corp
33
Priority
This page allows you to examine and change the configurations of current STP MSTI bridge
instance priority.
Label
Description
MSTI
The bridge instance. CIST is the default instance, which is always
active.
Priority
Indicates bridge priority. The lower the value, the higher the
priority. The bridge priority, MSTI instance number, and the 6-byte
MAC address of the switch forms a bridge identifier.
Save
Click to save changes
Reset
Click to undo any changes made locally and revert to previously
saved values
4.6.3 CIST
With the ability to cross regional boundaries, CIST is used by MSTP to communicate with other
MSTP regions and with any RSTP and STP single-instance spanning trees in the network. Any
boundary port, that is, if it is connected to another region, will automatically belongs solely to
CIST, even if it is assigned to an MSTI. All VLANs that are not members of particular MSTIs
are members of the CIST.
Port Settings