70
• Loop guard
• TC-BPDU guard
• BPDU drop
Protocols and standards
MSTP is documented in:
• IEEE 802.1d: Media Access Control (MAC) Bridges
• IEEE 802.1w: Part 3: Media Access Control (MAC) Bridges—Amendment 2: Rapid Reconfiguration
• IEEE 802.1s: Virtual Bridged Local Area Networks—Amendment 3: Multiple Spanning Trees
MSTP configuration task list
Before configuring MSTP, you must plan the role of each device in each MSTI, root bridge or leaf node,
and then configure the devices as planned. In each MSTI, only one device acts as the root bridge, and all
others as leaf nodes.
Complete these tasks to configure MSTP:
Task Remarks
Configuring an MST region Required
Configuring the root bridge or a secondary root bridge Optional
Configuring the work mode of an MSTP device Optional
Configuring the priority of a device Optional
Configuring the maximum hops of an MST region Optional
Configuring the network diameter of a switched network Optional
Configuring timers of MSTP Optional
Configuring the timeout factor Optional
Configuring the maximum port rate Optional
Configuring ports as edge ports Optional
Configuring the link type of ports Optional
Configuring the mode a port uses to recognize/send MSTP
packets
Optional
Enabling the output of port state transition information Optional
Configuring the root
bridge
Enabling the MSTP feature Required
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