Cisco IE-4000 Software Configuration Manual page 354

Configuring MSTP
Monitoring and Maintaining MSTP
Command
8. spanning-tree mst instance-id port-priority
priority
9. spanning-tree mst instance-id cost cost
10. spanning-tree link-type point-to-point
11. spanning-tree mst pre-standard
12. end
Monitoring and Maintaining MSTP
Command
show spanning-tree mst configuration
show spanning-tree mst configuration digest
show spanning-tree mst instance-id
show spanning-tree mst interface interface-id
clear spanning-tree detected-protocols
clear spanning-tree detected-protocols interface
interface-id
show running-config
copy running-config startup-config
Purpose
Configures the port priority.

instance-id—Specifies a single instance, a range of
instances separated by a hyphen, or a series of
instances separated by a comma. The range is 0 to
4096.

priority—The range is 0 to 240 in increments of 16. The
default is 128. The lower the number, the higher the
priority.
The priority values are 0, 16, 32, 48, 64, 80, 96, 112,
128, 144, 160, 176, 192, 208, 224, and 240. All other
values are rejected.
Configures the cost.
If a loop occurs, the MSTP uses the path cost when selecting
an interface to place into the forwarding state. A lower path
cost represents higher-speed transmission.

instance-id—Specifies a single instance, a range of
instances separated by a hyphen, or a series of
instances separated by a comma. The range is 0 to
4096.

cost—The range is 1 to 200000000; the default value is
derived from the media speed of the interface.
Specifies that the link type of a port is point-to-point.
Specifies that the port can send only prestandard BPDUs.
Returns to privileged EXEC mode.
Purpose
Displays the MST region configuration.
Displays the MD5 digest included in the current MSTCI.
Displays MST information for the specified instance.
Displays MST information for the specified interface.
Restarts the protocol migration process (forces the
renegotiation with neighboring switches) on the switch,
Restarts the protocol migration process on a specific
interface.
Verifies your entries.
Saves your entries in the configuration file.
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