inS_CnGE28FX4TX_rEv–
08/31/12 PAGE 44
INSTALLATION AND OPERATION MANUAL
CNGE28FX4TX
Tech SupporT: 1.888.678.9427
MSTI Ports
This page allows the user to inspect the current STP MSTI port configurations, and possibly
change them as well. A MSTI port is a virtual port, which is instantiated separately for each active
CIST (physical) port for each MSTI instance configured and applicable for the port. The MSTI
instance must be selected before displaying actual MSTI port configuration options.
This page contains MSTI port settings for physical and aggregated ports. The aggregation
settings are stack global.
Label
Description
Port
The switch port number of the corresponding STP CIST (and MSTI)
port.
Path Cost
Controls the path cost incurred by the port. The Auto setting will
set the path cost as appropriate by the physical link speed, using
the 802.1D recommended values. Using the Specific setting, a
user-defined value can be entered. The path cost is used when
establishing the active topology of the network. Lower path cost ports
are chosen as forwarding ports in favor of higher path cost ports.
Valid values are in the range 1 to 200000000.
Priority
Controls the port priority. This can be used to control priority of ports
having identical port cost. (See above).
Save
Select to save changes.
Reset
Select to undo any changes made locally and revert to previously
saved values.
