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Cisco SG350-28 User Manual

Cisco SG350-28
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12
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 SG350-28 Specifications

General IconGeneral
ModelSG350-28
CategorySwitch
Switching Capacity56 Gbps
LayerLayer 3
Power SupplyInternal
Form FactorRack-mountable
Relative Humidity10% to 90% non-condensing
MAC Address Table Size16K entries
Power Dedicated to PoENot applicable
Dimensions (W x D x H)440 x 257 x 44 mm
Operating Temperature0°C to 45°C
Storage Temperature-20°C to 70°C
Power Consumption24W
Input Voltage100-240V AC, 50/60Hz
Jumbo Frame SupportSupported
Weight3.2 kg

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