Quick Steps For Configuring An Mst Region - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Quick Steps for Configuring an MST Region

Quick Steps for Configuring an MST Region
An MST region identifies a group of MSTP switches that is seen as a single, flat mode instance by other
regions and/or non-MSTP switches. A region is defined by three attributes: name, revision level, and a
VLAN-to-MSTI mapping. Switches configured with the same value for all three of these attributes belong
to the same MST region.
Note that an additional configurable MST region parameter defines the maximum number of hops autho-
rized for the region but is not considered when determining regional membership.The maximum hops
value is the value used by all bridges within the region when the bridge is acting as the root of the MST
region.
This section provides a tutorial for defining a sample MST region configuration, as shown in the diagram
below:
Switch B
In order for switches A, B, and C in the above diagram to belong to the same MST region, they must all
share the same values for region name, revision level, and configuration digest (VLAN-to-MSTI
mapping).
The following steps are performed on each switch to define Alcatel-Lucent Marketing as the MST region
name, 2000 as the MST region revision level, map exiting VLANs to existing MSTIs, and 3 as the maxi-
mum hops value for the region:
1
Configure an MST Region name using the
-> bridge mst region name "Alcatel Marketing"
2
Configure the MST Region revision level using the
example:
-> bridge mst region revision level 2000
page 12-14
Switch A
||
IST
||
Switch C
MST Region
bridge mst region name
OmniSwitch AOS Release 6 Network Configuration Guide
Using 802.1Q 2005 Multiple Spanning Tree
Switch D
CST
||
Switch E
SST Switches (STP or RSTP)
command. For example:
bridge mst region revision level command. For
September 2009