User guide

318 Configuring Device Information
Figure 7-36. MSTP Settings
• Region Name (1-32 Characters) — Indicates user-defined MSTP region name.
•
Revision (0-65535) — Defines unsigned 16-bit number that identifies the current MST configuration
revision. The revision number is required as part of the MST configuration. The possible field range is
0-65535.
•
Max Hops (1-40) — Defines 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 — Indicates the Internal Spanning Tree Master ID. The IST Master is the specified
instance root.