Users Guide

spanning-tree vlan root
Designates a device as the primary or secondary root bridge.
Syntax
spanning-tree vlan vlan-id root {primary | secondary}
Parameters
● vlan-id — Enter a VLAN ID number, from 1 to 4093.
● root — Designate the bridge as the primary or secondary root.
● primary — Designate the bridge as the primary or root bridge.
● secondary — Designate the bridge as the secondary or secondary root bridge.
Default Not configured
Command Mode CONFIGURATION
Usage
Information
None
Example
OS10(config)# spanning-tree vlan 1 root primary
Supported
Releases
10.2.0E or later
spanning-tree rapid-pvst default behavior
Allows Rapid PVST+ switching between the current OS10 behavior and behavior expected by vendors other than OS9 or OS10.
Syntax
spanning-tree rapid-pvst default-behavior
Parameters None
Default Enabled
Command Mode INTERFACE CONFIGURATION
Security and
Access
Sysadmin, secadmin and netadmin
Usage
Information
The command is used to enable/disable transmission of RSTP BPDUs in VLAN 1, when the port is an
untagged member other than VLAN 1.By default, OS10 sends RSTP BPDU for the untagged VLAN. The
no version of this command handles the RSTP BPDU for VLAN 1 if the port is a member of VLAN 1. This
command should be used on the ports that are connected to vendors other than OS9/OS10.
Example
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# spanning-tree rapid-pvst default-behavior RSTP
BPDU is handled for access VLAN
OS10(conf-if-eth1/1/1)# no spanning-tree rapid-pvst default-behavior
RSTP BPDU is handled for VLAN 1
Supported
Releases
10.5.2.1 or later
show spanning-tree compatibility-mode
Displays the compatibility mode in which the port is currently operating.
Syntax
show spanning-tree compatibility-mode [ethernet node/slot/port[:subport] |
port-channel channel-number]
Parameters
● ethernet node/slot/port[:subport—Enter the Ethernet information for which the
information is to be displayed.
● port-channel channel-number—Enter a port-channel interface number, from 1 to 128.
616 Layer 2