PLANET WGSD-1022 - Manual (Page 57)

The page contains the following fields:
• Region Name Where provides a user-defined STP region name
• Revision Where defines unsigned 16-bit number that identifies the revision of
the current MST configuration. The revision number is required as
part of the MST configuration.
The possible field range 0-65535.
• Max Hops Which indicates the total number of hops that occur in a specific
region before the BPDU is discarded. Once the BPDU is discarded,
the port information is aged out. The possible field range is 1-40.
The field default is 20 hops
• IST Master Where identifies the Spanning Tree Master instance. The IST Master
is the specified instance roo
4.5.5 MSTP Instance Config
MSTP opreation maps VLANs into STP instances (see figure 4-20) Packets assigned to various VLANs
are transmitted along different paths within Multiple Spanning Trees Regions (MST Regions), Regions
are one or more Multiple Spanning Tree bridges by which frames can be transmitted. In configuring MST,
the MST region to which the device belongs is defined. A configuration consists of the name, revision,
and region to which the device belongs. Network Administrators can define MSTP Instances settings
using the MSTP Instance Settings screen.
Figure 4-20 MSTP Instance Settings screen