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Spanning Tree MSTI Ports
This section describes how to inspect and configure the current STP MSTI port configuration. An MSTI port is a virtual port
which is instantiated separately for each active CIST (physical) port, and for each MSTI instance applicable to, and
configured on, the port. The MSTI instance must be selected before displaying actual MSTI port configuration options. It
contains MSTI port settings for physical and aggregated ports.
To configure the Spanning Tree MSTI Port in the web interface:
Click Configuration / Spanning Tree / MSTI Ports
Select the MST1 or other MSTI Port
Click “Get” to set the parameters of the MSTI Ports including Path Cost and Priority.
Set all parameters of the MSTI Port Configuration.
Click Apply and click the Save icon in the upper right corner to save the settings or click Reset to cancel. The
Form will return to the previously saved settings.
Spanning Tree CIST Port Configuration Parameters:
Items
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).
Summary of Contents for S81
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