Users Guide

● point-to-point—Specifies that the interface is a point-to-point or full-duplex link.
● shared—Specifies that the interface is a half-duplex medium.
Default Auto
Command Mode INTERFACE
Usage
Information
As specified 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-inf)# spanning-tree link-type point-to-point
Supported
Releases
OS10 legacy command.
spanning-tree mac-flush-timer
Enables or disables MAC flush optimization.
Syntax
spanning-tree mac-flush-timer timer-interval
Parameters timer-interval—Enter the timer interval in centi-seconds, from 0 to 500. The default value is 200
milli-seconds.
Default Enabled
Command Mode CONFIGURATION
Usage
Information
This command configures the flush interval time in centi-seconds, and controls the number of calls
invoked from the spanning-tree module. If the timer is set to 0, MAC flush optimization is disabled. If the
timer is set to a non-zero value, instance-based flushing occurs based on the MAC flush threshold value.
The no version of this command resets the flush-interval timer to the default value.
Example
OS10(config)# spanning-tree mac-flush-timer 500
OS10(config)# no spanning-tree mac-flush-timer
Supported
Releases
10.4.3.0 or later
spanning-tree mode rstp
Enables an STP type: RSTP.
Syntax
spanning-tree mode rstp
Parameters
● rstp — Sets STP mode to RSTP.
Default Rapid-PVST
Command Mode CONFIGURATION
Usage
Information
All STP instances stop in the previous STP mode and restart in the new mode. You can also change to
RSTP/MST mode.
Example
OS10(config)# spanning-tree mode rstp
Layer 2 595