User Guide

Technical Tip

DGS-1100-05PD

Smart Managed PoE-Powered 5-Port

Gigabit Switch / PoE Extender

Overview:

The DGS-1100-05PD is a unique 5-port switch powered by an upstream IEEE 802.3af or 802.3at compliant PoE switch (or

injector) through its port 5. The DGS-1100-05PD is also a “PoE extender”. It has the ability to propagate (pass-through) PoE

power downstream to Powered Devices (PDs) connected to its port 1 and/or port 2. The amount of power available to PDs

is dependent on the PoE source (802.3af or 802.3at) and the PD’s PoE Classication.

Product Details:

There is no AC/DC power adapter packaged in the DGS-1100-05PD box. The switch must be powered (through port 5) by

a PoE switch or PoE injector located upstream. This upstream PoE source may support either 802.3af or 802.3at.

The DGS-1100-05PD switch can propogate PoE power to downstream PDs (such as IP Cameras, IP Phones, Wireless APs)

using port 1 and/or port 2. This is also called PoE “pass-through”. When using PoE pass-through functionality, it is highly

recommended that this switch be powered via an 802.3at switch/injector (also known as PoE+). An 802.3af switch/injec-

tor will work, but the ability of the DGS-1100-05PD to pass-through PoE power will be signicantly limited.

• If the DGS-1100-05PD is powered by 802.3af mode, the power budget will support up to 8W.

• If the DGS-1100-05PD is powered by 802.3at mode, the power budget will support up to 18W.

PoE Power inPoE Power out (optional)

PoE Power out (optional)

PoE Switch

DGS-1100-05PD

Powered Devices (PDs)

100m 100m

PoE

PAGE 1
Technical Tip DGS-1100-05PD Smart Managed PoE-Powered 5-Port Gigabit Switch / PoE Extender Overview: The DGS-1100-05PD is a unique 5-port switch powered by an upstream IEEE 802.3af or 802.3at compliant PoE switch (or injector) through its port 5. The DGS-1100-05PD is also a “PoE extender”. It has the ability to propagate (pass-through) PoE power downstream to Powered Devices (PDs) connected to its port 1 and/or port 2. The amount of power available to PDs is dependent on the PoE source (802.3af or 802.
PAGE 2
Technical Tip DGS-1100-05PD The ability to pass-through PoE power to one or two downstream devices (PDs) is dependent on the PoE Classification of those devices. The following tables show the DGS-1100-05PD switch’s capabilities when using PoE pass-through. When the DGS-1100-05PD is powered by an 802.3af switch/injector: Port 5 802.
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Technical Tip DGS-1100-05PD Troubleshooting Tip 1: Not all IP cameras and other PDs classify themselves. If a PD fails to classify itself, the switch will default to Class 0 and reserve a maximum amount of power (15.4W), even if the PD actually consumes less. This may limit or prevent users from powering PD(s), even though the switch in theory does have sufficient power budget. There is a potential work around that users may consider.