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FTOS Configuration Guide for the C-Series - Force10 Networks

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R1(conf-if-gi-1/1)#show config<br />

!<br />

interface GigabitE<strong>the</strong>rnet 1/1<br />

no ip address<br />

switchport<br />

no shutdown<br />

R1(conf-if-gi-1/1)#<br />

Figure 293 Verifying Layer 2 <strong>Configuration</strong><br />

Enable Rapid Spanning Tree Protocol Globally<br />

Rapid Spanning Tree Protocol must be enabled globally on all participating bridges; it is not enabled by<br />

default.<br />

To enable Rapid Spanning Tree globally <strong>for</strong> all Layer 2 interfaces:<br />

Step Task Command Syntax Command Mode<br />

1 Enter <strong>the</strong> PROTOCOL SPANNING TREE RSTP<br />

mode.<br />

Verify that Rapid Spanning Tree is enabled using <strong>the</strong> show config command from PROTOCOL<br />

SPANNING TREE RSTP mode.<br />

Figure 294 Verifying RSTP is Enabled<br />

When you enable Rapid Spanning Tree, all physical and port-channel interfaces that are enabled and in<br />

Layer 2 mode are automatically part of <strong>the</strong> RST topology.<br />

• Only one path from any bridge to any o<strong>the</strong>r bridge is enabled.<br />

• Bridges block a redundant path by disabling one of <strong>the</strong> link ports.<br />

protocol spanning-tree rstp CONFIGURATION<br />

2 Enable Rapid Spanning Tree. no disable PROTOCOL<br />

SPANNING TREE<br />

RSTP<br />

Note: To disable RSTP globally <strong>for</strong> all Layer 2 interfaces, enter <strong>the</strong> disable command from PROTOCOL<br />

SPANNING TREE RSTP mode.<br />

R1(conf-rstp)#show config<br />

!<br />

protocol spanning-tree rstp<br />

no disable<br />

R1(conf-rstp)#<br />

Indicates that <strong>the</strong> interface is in Layer 2 mode<br />

Indicates that Rapid Spanning Tree is enabled<br />

<strong>FTOS</strong> <strong>Configuration</strong> <strong>Guide</strong>, version 7.7.1.0 411

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