Brocade TurboIron 24X Series Configuration Guide - Manual (Page 616)

582 Brocade TurboIron 24X Series Configuration Guide
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802.1s Multiple Spanning Tree Protocol
TurboIron(config)#mstp name TurboIron
Syntax: [no] mstp name
The <name> parameter defines an ASCII name for the MSTP configuration. The default name is for
the name variable to be blank.
Setting the MSTP revision number
Each switch that is running MSTP is configured with a revision number. It applies to the switch
which can have many different VLANs that can belong to many different MSTP regions.
To configure an MSTP revision number, use a command such as the following at the Global
Configuration level.
TurboIron(config)#mstp revision 4
Syntax: [no] mstp revision
The revision parameter specifies the revision level for MSTP that you are configuring on the switch.
It can be a number from 0 and 65535. The default revision number is 0.
Configuring an MSTP instance
An MSTP instance is configured with an MSTP ID for each region. Each region can contain one or
more VLANs. The Brocade implementation of MSTP allows you to assign VLANS or ranges of VLANs
to an MSTP instance before or after they have been defined. If pre-defined, a VLAN will be placed in
the MSTI that it was assigned to immediately when the VLAN is created. Otherwise, the default
operation is to condition of assign all new VLANs to the CIST. VLANs assigned to the CIST by default
can be moved later to a specified MSTI.
To configure an MSTP instance and map one or more VLANs to that MSTI, use a command such as
the following at the Global Configuration level.
TurboIron(config)#mstp instance 7 vlan 4 to 7
Syntax: [no] mstp instance [ vlan | vlan-group ]
The instance parameter defines the number for the instance of MSTP that you are configuring. The
value 0 (which identifies the CIST) cannot be used. You can have up to 15 instances, number 1 –
4094.
The vlan parameter assigns one or more VLANs or a range of VLANs to the instance defined in this
command.
The vlan-group parameter assigns one or more VLAN groups to the instance defined in this
command.
The no option moves a VLAN or VLAN group from its assigned MSTI back into the CIST.
NOTE
The system does not allow an MSTI without any VLANs mapped to it. Consequently, removing all
VLANs from an MSTI, deletes the MSTI from the system. The CIST by contrast will exist regardless of
whether or not any VLANs are assigned to it or not. Consequently, if all VLANs are moved out of a
CIST, the CIST will still exist and functional.