User manual

OMMAND

INE

NTERFACE

4-208

spanning-tree mode

This command selects the spanning tree mode for this switch. Use the no

form to restore the default.

Syntax

spanning-tree mode {stp | rstp

| mstp}

no spanning-tree mode

• stp - Spanning Tree Protocol (IEEE 802.1D)

• rstp - Rapid Spanning Tree Protocol (IEEE 802.1w)

• mstp - Multiple Spanning Tree (IEEE 802.1s)

Default Setting

rstp

Command Mode

Global Configuration

Command Usage

• Spanning Tree Protocol

Uses RSTP for the internal state machine, but sends only 802.1D

BPDUs. This creates one spanning tree instance for the entire

network. If multiple VLANs are implemented on a network, the

path between specific VLAN members may be inadvertently

disabled to prevent network loops, thus isolating group members.

When operating multiple VLANs, we recommend selecting the

MSTP option.