Users Guide

spanning-tree rstp forward-time
Configures a time interval for the interface to wait in the Blocking state or Learning state before moving to the Forwarding
state.
Syntax
spanning-tree rstp forward-time seconds
Parameters seconds — Enter the number of seconds an interface waits in the Blocking or Learning States before
moving to the Forwarding state, from 4 to 30.
Default 15 seconds
Command Mode CONFIGURATION
Usage
Information
None
Example
OS10(config)# spanning-tree rstp forward-time 16
Supported
Releases
10.2.0E or later
spanning-tree rstp hello-time
Sets the time interval between generation and transmission of RSTP BPDUs.
Syntax
spanning-tree rstp hello-time seconds
Parameters seconds — Enter a hello-time interval value in seconds, from 1 to 10.
Default 2 seconds
Command Mode CONFIGURATION
Usage
Information
Dell EMC recommends increasing the hello-time for large configurations, especially configurations with
multiple ports.
Example
OS10(config)# spanning-tree rstp hello-time 5
Supported
Releases
10.2.0E or later
spanning-tree rstp mac-flush-threshold
Sets the flush indication threshold value on the RSTP instance.
Syntax
spanning-tree rstp mac-flush-threshold threshold-value
Parameters threshold-value—Enter the threshold value for the number of flushes, from 0 to 65535. The default
value is 65535.
Default 65535
Command Mode CONFIGURATION
Usage
Information
The threshold value indicates the number of flush indications to go before the flush interval timer is
triggered. When flush indication threshold is set to the default value and the flush interval is set to a non-
default value, flushing occurs during the first flush indication trigger. When the flush indication threshold
value is non-default (n) and flush interval value is non-default, port-based flushing is triggered until the
threshold (n) is reached. Once the threshold is reached, the MAC flush timer starts. On timer expiry, the
system triggers instance-based flushing. When the timer is running, all port-and-instance-based flushing
is suppressed. The no form of the command sets the flush indication threshold to its default value.
Example
OS10(config)# spanning-tree rstp mac-flush-threshold 255
532 Layer 2