Access Mode - Cisco WS-C3550-12G User Manual

Chapter 8 Interface and Subinterface Management
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Access Mode

The Access Mode area provides the following information:
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You can select one chassis, more than one Ethernet module, and more than one interface at a time
from the object list on the left side of the window.
The CCSM EtherInterface MST Config Dialog window contains two areas, MST Apply Remove and
MST Interface Details.
MST Apply Remove:
Available MST Instances—Displays the list of available MST instances.
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MST Instance—Indicates the MST instance number, 0 to 15, to be added to or removed from
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the list of available MST instances.
Port Priority—Indicates the MST port priority for the MST instance. Valid port priority values
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are 0 to 240.
Cost—Indicates the MST port cost for the MST instance. Valid cost values are 1 to 200000000.
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Apply MST—Applies the specified MST instance to the interface.
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– Remove MST—Removes the specified MST instance from the interface. For complete removal
of the MST instance, values for Port Priority and Cost must be specified as well.
MST Interface Details:
– MST Interface Panel—Displays the list of MST interfaces included in the selected instance.
– Instance Port Priority—Port priority for the MST instance applied to the interface.
– Instance Port Cost—Port cost for the MST instance applied to the interface.
Clear Detected Protocols—Displays Confirmation dialog box. Upon confirmation, clears all
protocols detected on the interface and restarts protocol migration on the interface.
Set Point to Point Link—The port is administratively configured to be connected to a point–to–point
link. Results displays in an Action Report window.
Set Shared Link—The port is administratively configured to be connected to a shared medium.
Results displays in an Action Report window.
Port Priority—Describes the STP port priority of this interface. This is a metric used to represent
the location of an interface in a network topology. It is used to determine which port will be placed
in a blocking state when two or more ports are part of a loop. The default value is 128 in all versions
of IOS, 32 in all versions of CatOS. For example:
– Native IOS 12.1(6)E and earlier: Integer (0..248) [increments of 8]
– Native IOS 12.1(8a)E and later: Integer (0..252) [increments of 4]
CatOS 6.3:Integer(0..63)
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CatOS 7.1:Integer(1..63)
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Port Cost—Describes the STP port cost for this interface. The port cost is a metric used to represent
the speed of the interface. STP will use this value in determining the preferred path when a loop is
detected in the network.
Ethernet Interface Management Window
Cisco Catalyst Switch Manager User Guide
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