Users Guide

Usage Information Root guard and loop guard congurations are mutually exclusive. Conguring one overwrites the other from the
active conguration.
Command Mode INTERFACE
Example
OS10(conf-if-eth1/1/4)# spanning-tree guard root
Supported Releases 10.2.0E or later
spanning-tree link-type
Sets the spanning-tree link-type for faster convergence.
Syntax
spanning-tree link-type {auto | point-to-point | shared}
Parameters
• auto — Enter the keyword to sets the link-type based on the duplex setting of the interface.
• point-to-point—Species that the interface is a point-to-point or full-duplex link.
• shared—Species that the interface is a half-duplex medium.
Default Auto
Command Mode INTERFACE
Usage Information
As specied in IEEE 802.1w, OS10 assumes a port that runs in full-duplex mode as a point-to-point link. A point-to-
point link transitions to forwarding state faster. By default, OS10 derives the link-type of a port from the duplex
mode. You can override the duplex mode using the spanning-tree link-type command.
As half-duplex mode is considered as a shared link, the fast transition feature is not applicable for shared links. If
you designate a port as a shared link, you cannot use the fast transition feature, regardless of the duplex setting.
Example
OS10(config)# spanning-tree link-type point-to-point
Supported Releases
OS10 legacy command.
spanning-tree mac-ush-timer
Enables or disables MAC ush optimization.
Syntax
spanning-tree mac-flush-timer timer-interval
Parameters timer-interval—Enter the timer interval in milli-seconds, from 0 to 500. The default value is 200 milli-
seconds.
Default Enabled
Command Mode CONFIGURATION
Usage Information This command congures the ush interval time in milli-seconds, and controls the number of calls invoked from the
spanning-tree module. If the timer is set to 0, port-and-interval-based ushing occurs. If the timer is set to a non-
zero value, instance-based ushing occurs based on the MAC ush threshold value. The no version of this
command resets the ush-interval timer to the default value.
404 Layer 2