Mstp Port Information - D-Link DGS-3427 User Manual

MSTP Port Information

This window displays the current MSTP Port Information and can be used to update the port configuration for an MSTI ID.
If a loop occurs, the MSTP function will use the port priority to select an interface to put into the forwarding state. Set a
higher priority value for interfaces to be selected for forwarding first. In instances where the priority value is identical, the
MSTP function will implement the lowest MAC address into the forwarding state and other interfaces will be blocked.
Remember that lower priority values mean higher priorities for forwarding packets. To view the following window, click
Layer 2 Features > Spanning Tree > MSTP Port Information:
To view the MSTI settings for a particular port, select the Port number, located in the top left hand corner of the screen and
click Apply. To modify the settings for a particular MSTI Instance, click on its hyperlinked MSTI ID, which will reveal
the following window.
Parameter
Instance ID
Internal cost (0=Auto)
Priority
Click Apply to implement changes made.
xStack DGS-3400 Series Fast Ethernet Switch
Figure 7- 24. MSTP Port Information
Figure 7- 25. MSTI Settings
Description
Displays the MSTI ID of the instance being configured. An entry of 0 in this
field denotes the CIST (default MSTI).
This parameter is set to represent the relative cost of forwarding packets to
specified ports when an interface is selected within a STP instance. The
default setting is 0 (auto). There are two options:
0 (auto) - Selecting this parameter for the internalCost will set quickest route
automatically and optimally for an interface. The default value is derived from
the media speed of the interface.
value 1-200000000 - Selecting this parameter with a value in the range of 1-
200000000 will set the quickest route when a loop occurs. A lower Internal
cost represents a quicker transmission.
Enter a value between 0 and 240 to set the priority for the port interface. A
higher priority will designate the interface to forward packets first. A lower
number denotes a higher priority.
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