Name: Cisco SG350X-24
Brand: Cisco
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Cisco Sx350, SG350X, SG350XG, Sx550X & SG550XG Series Managed Switches, Firmware Release 2.2.5.x 222

Spanning Tree

This section describes the Spanning Tree Protocol (STP) (IEEE802.1D and IEEE802.1Q) and

covers the following topics:

• STP Flavors

• STP Status and Global Settings

• STP Interface Settings

• RSTP Interface Settings

• Multiple Spanning Tree Overview

• MSTP Properties

• VLANs to a MSTP Instance

• MSTP Instance Settings

• MSTP Interface Settings

STP Flavors

STP protects a Layer 2 Broadcast domain from Broadcast storms by selectively setting links to

standby mode to prevent loops. In standby mode, these links temporarily stop transferring user

data. After the topology changes so that the data transfer is made possible, the links are

automatically re-activated.

Loops occur when alternate paths exist between hosts. Loops can cause switches to relay the

same packets indefinitely, resulting packets not arriving at their destination, Broadcast/

Multicast storms and reduced network efficiency.

STP provides a tree topology for any arrangement of switches and interconnecting links, by

creating a unique path between end stations on a network, and thereby eliminating loops.

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Cisco SG350X-24 Specifications

General