STP

The FortiSwitch unit supports the following:

• Spanning Tree Protocol, a link-management protocol that ensures a loop-free layer-2 network topology
• Multiple Spanning Tree Protocol (MSTP), which is based on the IEEE 802.1s standard
• Per-VLAN Rapid Spanning Tree Protocol (also known as Rapid PVST or RPVST); RSTP is defined in the IEEE 802.1w standard

This section covers the following topics:

• MSTP overview and terminology
• MSTP configuration
• Interactions outside of the MSTP region
• Viewing the MSTP configuration
• Support for interoperation with Rapid per-VLAN RSTP (Rapid PVST+ or RPVST+)