xStack
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DES-3500 Series Layer 2 Stackable Fast Ethernet Managed Switch User Manual
57
Parameter Description
Instance ID
Displays the MSTI ID of the instance being configured. An entry of 0 in this field denotes the
CIST (default MSTI).
Internal cost
(0=Auto)
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 1-2000000 - Selecting this parameter with a value in the range of 1-2000000
will set the quickest route when a loop occurs. A lower Internal cost represents a
quicker transmission.
Priority
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.
Click Apply to implement changes made.
STP Instance Settings
The following window displays MSTIs currently set on the Switch. To view the following table, click Configuration > Spanning
Tree > STP Instance Settings:
Figure 6- 32. STP Instance Table window
The following information is displayed:
Parameter Description
Instance Type
Displays the instance type(s) currently configured on the Switch. Each instance type is
classified by a MSTI ID. CIST refers to the default MSTI configuration set on the Switch.
Instance Status
Displays the current status of the corresponding MSTI ID
Instance Priority
Displays the priority of the corresponding MSTI ID. The lowest priority will be the root bridge.
Click Apply to implement changes made.
To acquire more detailed information on a particular STP Instance, click its hyperlinked Instance Type, which will display the
following read-only window.
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