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Spanning-tree, Spanning-tree mode, Spanning-tree 4-151 spanning-tree mode – Accton Technology ES5508 User Manual

Page 363

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Spanning Tree Commands

4-151

4

spanning-tree

This command enables the Spanning Tree Algorithm globally for the switch. Use the
no form to disable it.

Syntax

[no] spanning-tree

Default Setting

Spanning tree is enabled.

Command Mode

Global Configuration

Command Usage

The Spanning Tree Algorithm (STA) can be used to detect and disable
network loops, and to provide backup links between switches, bridges or
routers. This allows the switch to interact with other bridging devices (that is,
an STA-compliant switch, bridge or router) in your network to ensure that only
one route exists between any two stations on the network, and provide backup
links which automatically take over when a primary link goes down.

Example
This example shows how to enable the Spanning Tree Algorithm for the switch:

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

mstp

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

Console(config)#spanning-tree
Console(config)#