API Guide

Parameters
● stp — Forces the version for the BPDUs transmitted by MST to STP
Default Not configured
Command Mode CONFIGURATION
Usage
Information
Forces a bridge that supports Rapid-PVST to operate in an STP-compatible mode.
Example
OS10(config)# spanning-tree rpvst force-version stp
Supported
Releases
10.2.0E or later
spanning-tree vlan hello-time
Sets the time interval between generation and transmission of Rapid-PVST BPDUs.
Syntax
spanning-tree vlan vlan-id hello-time seconds
Parameters
● vlan-id — Enter the VLAN ID number, from 1 to 4093.
● 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 vlan 10 hello-time 5
Supported
Releases
10.2.0E or later
spanning-tree vlan mac-flush-threshold
Configures the MAC-flush threshold value for the specified VLAN.
Syntax
spanning-tree vlan vlan-id mac-flush-threshold threshold-value
Parameters
● vlan-id — Enter the spanning-tree VLAN ID number, from 1 to 4093.
● 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
The threshold value 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, MAC-flush timer starts.
On timer expiry, the system triggers VLAN-based flushing. When the timer is running, any port-and-vlan-
based flushing is suppressed. The no form of the command resets the flush indication threshold of the
specific instance to its default value.
Example
OS10(config)# spanning-tree vlan 100 mac-flush-threshold 255
Supported
Releases
10.4.0E(R1) or later
486 Layer 2