Alcatel-Lucent 6850-48 Reference Guide

Distributed Spanning Tree Commands

OmniSwitch CLI Reference Guide

page 15-17

Defines a Multiple Spanning Tree Instance (MSTI) number. This number identifies an association 
between a range of VLANs and a single Spanning Tree instance. In addition, it is possible to assign an 
optional name to the MSTI for further identification.

bridge msti msti_id [name name]

bridge no msti msti_id 

bridge msti msti_id no name

A numeric value (1–4094) that uniquely identifies an MSTI.

An alphanumeric string up to 32 characters. Use quotes around string if 
the name contains multiple words with spaces between them (e.g. 
“Alcatel-Lucent Marketing”).

By default, a flat mode Common and Internal Spanning Tree (CIST) instance always exists. The MSTI ID 
number for this instance is 0. 

OmniSwitch 6400, 6850, 6855, 9000, 9000E

• Use the no msti form of this command to remove the MSTI from the switch configuration.

• Use the no name form of this command to remove the optional MSTI name from the specified 

instance. The instance itself is not removed; only the name.

• Up to 16 MSTIs are allowed per switch; select a number from 1 to 4094 for the MSTI number. In addi-

tion, there is always one Common and Internal Spanning Tree (CIST) instance 0 per switch. Initially 
all VLANs are associated with the CIST instance.

• Creating an MSTI is allowed when the switch is operating in either the 1x1 or flat Spanning Tree 

mode, as long as MSTP is the selected flat mode protocol. The MSTI configuration, however, is not 
active unless the switch is running in the flat mode.

-> bridge msti 10 

-> bridge msti 20 name BldgOneST10

-> bridge msti 20 no name

-> bridge no msti 10

Release 6.1; command was introduced.