Alcatel-Lucent OmniSwitch 6250, Cli Reference Manual, Page: 487 / 2018

Distributed Spanning Tree Commands
OmniSwitch 6250 CLI Reference Guide November 2009 page 16-47
bridge bpdu-switching
Enables the switching of Spanning Tree BPDU on the flat mode Common and Internal Spanning Tree
(CIST) instance or for an individual VLAN instance if the switch is running in the 1x1 mode.
bridge [instance] bpdu-switching {enable | disable}
Syntax Definitions
instance The flat mode CIST instance (bridge 1) or an existing 1x1 mode VLAN
ID instance number (bridge 1–4094).
enable Enables BPDU switching for the specified instance.
disable Disables BPDU switching for the specified instance.
Defaults
By default, BPDU switching is disabled for an instance.
Platforms Supported
OmniSwitch 6250
Usage Guidelines
•
Specifying the BPDU switching status for a VLAN does not depend on the current VLAN Spanning
Tree status. For example, setting the BPDU switching status to enabled is allowed on a VLAN that also
has Spanning Tree enabled.
•
The bridge bpdu-switching command is an implicit Spanning Tree command. When issued in the 1x1
mode, the instance number specified implies a VLAN ID. When issued in the flat mode, the instance
number specified implies an MSTI number.
•
If an instance is not specified with this command, the BPDU switching status is configured for the flat
mode CIST instance by default regardless of which mode (flat or 1x1) is active on the switch.
•
Note that if the switch is running in the flat mode, specifying a value greater than 1 for the instance
will return an error message. BPDU switching is only configured for the flat mode instance (bridge 1),
regardless of which protocol is active (STP, RSTP, or MSTP).
Examples
-> bridge mode flat
-> bridge bpdu-switching enable
-> bridge 1 bpdu-switching disable
-> bridge mode 1x1
-> bridge 100 bpdu-switching enable
-> bridge 100 bpdu-switching disable
parameter default
instance CIST (flat mode)