Netgear XCM8810 Chassis Hardware Installation Guide - Page 744

NETGEAR 8800 Chassis Switch CLI Manual configure mstp region configure mstp region Description Configures the name of an MSTP region on the switch. Syntax Description regionName Specifies a user-defined name for the MSTP region. May be up to 32 characters. Default By default, the switch uses the MAC address of the switch to generate an MSTP region. Before you configure the MSTP region, it also has the following additional defaults: • MSTP format Identifier-0 • MSTP Revision Level-3 Usage Guidelines The maximum length for a name is 32 characters. Names can contain alphanumeric characters and underscores ( _ ) but cannot be any reserved keywords, for example, mstp. Names must start with an alphabetical character, for example, a, Z. By default, the switch uses the unique MAC address of the switch to generate an MSTP region. Since each MAC address is unique, every switch is in its own region by default. For multiple switches to be part of an MSTP region, you must configure each switch in the region with the same MSTP configuration attributes, also known as MSTP region identifiers. These identifiers consist of the following: • Region Name-The name of the MSTP region. • Format Selector-The number used to identify the format of MSTP BPDUs. The default is 0. • Revision Level-This identifier is reserved for future use; however, the switch uses and displays a default of 3. You can configure only one MSTP region on the switch at any given time. The switches inside a region exchange BPDUs that contain information for MSTIs. The switches connected outside of the region exchange CIST information. By having devices look at the region identifiers, MSTP discovers the logical boundary of a region. If you have an active MSTP region, NETGEAR recommends that you disable all active STPDs in the region before renaming the region on all of the participating switches. 744 | Chapter 17. STP Commands