Users Guide

Usage Information None
Example
OS10(config)# spanning-tree vlan 10 forward-time 16
Supported
Releases
10.2.0E or later
spanning-tree vlan force-version
Configures a forced version of spanning-tree to transmit BPDUs.
Syntax
spanning-tree vlan vlan-id force-version rstp
Parameters
• rstp — Forces the version for the BPDUs transmitted by RPVST+ to RSTP
Default Not configured
Command Mode CONFIGURATION
Usage Information Forces a bridge that supports RPVST+ to operate in an STP-compatible mode.
Example
OS10(config)# spanning-tree mst force-version
Supported
Releases
10.2.0E or later
spanning-tree vlan hello-time
Sets the time interval between generation and transmission of RPVST 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 Not configured
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.
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