Users Guide

Default 2 seconds
Command Mode CONFIGURATION
Usage
Information
Dell EMC recommends increasing the hello-time for large configurations, especially configurations with
multiple ports. The no version of this command resets the value to the default.
Example
OS10(config)# spanning-tree mst hello-time 5
Supported
Releases
10.2.0E or later
spanning-tree mst mac-flush-threshold
Configures the mac-flush threshold value for a specific instance.
Syntax
spanning-tree mst instance-number mac-flush-threshold threshold-value
Parameters
● instance-number—Enter the instance number, from 0 to 4094.
● threshold-value—Enter the threshold value for the number of flushes, from 0 to 65535. The
default value is 5.
Default 5
Command Mode CONFIGURATION
Usage
Information
This threshold indicates the number of port-based flush requests allowed to be invoked before starting
the flush optimization. When the flush interval value is non-zero, port-and-instance-based flushing is
triggered until the threshold 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 of
the specific instance to its default value.
Example
OS10(config)# spanning-tree mst 10 mac-flush-threshold 255
Supported
Releases
10.4.0E(R1) or later
spanning-tree mst max-age
Configures the time period the bridge maintains configuration information before refreshing the information by recomputing the
MST topology.
Syntax
max-age seconds
Parameters seconds — Enter a maximum age value in seconds, from 6 to 40.
Default 20 seconds
Command Mode CONFIGURATION
Usage
Information
The no version of this command resets the value to the default.
Example
OS10(config)# spanning-tree mst max-age 10
Supported
Releases
10.2.0E or later
636 Layer 2