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9 msti port configuration – PLANET WGSD-8020 User Manual

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User’s Manual of WGSD-8020

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VLANs Mapped

The list of VLAN's mapped to the MSTI. The VLANs must be separated with

comma and/or space. A VLAN can only be mapped to one MSTI.

A unused MSTI should just be left empty. (I.e. not having any VLANs mapped to

it.)

4.7.9 MSTI Port Configuration

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 seperately 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.

Figure 4-7-11

MSTI Port Configuration page screenshot

The page includes the following fields:

Object

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).