Users Guide
Rapid Spanning Tree Protocol (RSTP)
The Rapid Spanning Tree Protocol (RSTP) is a Layer 2 protocol — specied by IEEE 802.1w — that is essentially the same as spanning-
tree protocol (STP) but provides faster convergence and interoperability with switches congured with STP and multiple spanning tree
protocol (MSTP)..
Protocol Overview
The Dell Networking OS supports three other versions of spanning tree, as shown in the following table.
Table 87. Spanning Tree Versions Supported
Dell Networking Term IEEE Specication
Spanning Tree Protocol (STP) 802.1d
Rapid Spanning Tree Protocol (RSTP) 802.1w
Multiple Spanning Tree Protocol (MSTP) 802.1s
Per-VLAN Spanning Tree Plus (PVST+) Third Party
Conguring Rapid Spanning Tree
Conguring RSTP is a two-step process.
1 Congure interfaces for Layer 2.
2 Enable the rapid spanning tree protocol.
Related Conguration Tasks
• Adding and Removing Interfaces
• Modifying Global Parameters
• Modifying Interface Parameters
• Conguring an EdgePort
• Prevent Network Disruptions with BPDU Guard
• Inuencing RSTP Root Selection
• Enabling SNMP Traps for Root Elections and Topology Changes
• Conguring Fast Hellos for Link State Detection
• Flush MAC Addresses after a Topology Change
Important Points to Remember
• RSTP is disabled by default on the switch.
• The system supports only one Rapid Spanning Tree (RST) instance.
• All interfaces in virtual local area networks (VLANs) and all enabled interfaces in Layer 2 mode are automatically added to the RST
topology.
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880 Rapid Spanning Tree Protocol (RSTP)