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FTOS Configuration Guide for the C-Series - Force10 Networks

FTOS Configuration Guide for the C-Series - Force10 Networks

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Chapter 21 Rapid Spanning Tree Protocol<br />

Rapid Spanning Tree Protocol is supported on plat<strong>for</strong>ms: c e s<br />

Protocol Overview<br />

Rapid Spanning Tree Protocol (RSTP) is a Layer 2 protocol—specified by IEEE 802.1w—that is<br />

essentially <strong>the</strong> same as Spanning-Tree Protocol (STP) but provides faster convergence and interoperability<br />

with switches configured with STP and MSTP.<br />

<strong>FTOS</strong> supports three o<strong>the</strong>r variations of Spanning Tree, as shown in Table 42.<br />

Configuring Rapid Spanning Tree<br />

Configuring Rapid Spanning Tree is a two-step process:<br />

1. Configure interfaces <strong>for</strong> Layer 2. See page 410.<br />

2. Enable Rapid Spanning Tree Protocol. See page 411.<br />

Related <strong>Configuration</strong> Tasks<br />

• Add and Remove Interfaces on page 414<br />

• Modify Global Parameters on page 414<br />

• Modify Interface Parameters on page 415<br />

• Configure an EdgePort on page 416<br />

Table 42 <strong>FTOS</strong> Supported Spanning Tree Protocols<br />

Force 10 Term IEEE Specification<br />

Spanning Tree Protocol 802.1d<br />

Rapid Spanning Tree Protocol 802.1w<br />

Multiple Spanning Tree Protocol 802.1s<br />

Per-VLAN Spanning Tree Plus Third Party<br />

• Preventing Network Disruptions with BPDU Guard on page 394<br />

• Influence RSTP Root Selection on page 417<br />

• Configure Spanning Trees as Hitless on page 396<br />

• SNMP Traps <strong>for</strong> Root Elections and Topology Changes on page 417<br />

<strong>FTOS</strong> <strong>Configuration</strong> <strong>Guide</strong>, version 7.7.1.0 409

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