Users Guide

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 (RSTP)
OS10(config)# spanning-tree mode rstp
Example (MST)
OS10(config)# spanning-tree mode mst
Supported Releases 10.2.0E or later
spanning-tree rstp force-version
Congures a forced version of spanning tree to transmit BPDUs.
Syntax
spanning-tree rstp force-version stp
Parameters stp — Force the version for the BPDUs transmitted by RSTP.
Default Not congured
Command Mode CONFIGURATION
Usage Information Forces a bridge that supports RSTP or MST to operate in an STP-compatible manner to avoid frame mis-ordering
and duplication in known LAN protocols that are sensitive.
Example
OS10(config)# spanning-tree rstp force-version stp
Supported Releases 10.2.0E or later
spanning-tree rstp forward-time
Congures 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 congurations, especially congurations with multiple
ports.
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