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13-23

802.1w Rapid Spanning Tree Protocol (RSTP) and 802.1d Spanning Tree Protocol (STP)

802.1p Spanning-Tree Protocol (STP)

Configuring the Switch To Use the 802.1d Spanning Tree Protocol

(STP). In the default configuration, the switch is set to RSTP (that is, 802.1w

Rapid Spanning Tree), and spanning tree operation is disabled. To reconfigure

the switch to 802.1d spanning tree, you must:

1. Change the spanning tree protocol version to stp.

2. Use write memory to save the change to the startup-configuration.

3. Reboot the switch.

4. If you have not previously enabled spanning-tree operation on the switch,

use the spanning-tree command again to enable STP operation.

Syntax: spanning-tree protocol-version stp

write memory

boot

For example:

Figure 13-10. Steps for Changing Spanning-Tree Operation to the 802.1d Protocol

Enabling (or Disabling) Spanning Tree Operation on the Switch.

This command enables (or disables) spanning tree operation for either span-

ning tree version—STP/802.1d or RSTP/802.1w (the default). Before using this

command, ensure that the version of spanning tree you want to use is active

on the switch. (See the preceding topic, “Configuring the Switch To Use the

802.1d Spanning Tree Protocol (STP)” on page 13-23.)

Syntax: [ no ] spanning-tree

Default: Disabled

For example:

HPswitch spanning-tree

Enabling STP implements the spanning tree protocol for all physical ports on

the switch, regardless of whether multiple VLANs are configured. Disabling

STP removes protection against redundant loops that can significantly slow

or halt a network.

!Software.book Page 23 Thursday, October 10, 2002 6:10 PM

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