NETGEAR GS108LP Installation guide

FAQs:
How do I troubleshoot problems with my NETGEAR PoE switch?
This article assists in troubleshooting common Power over Ethernet (PoE) problems with NETGEAR PoE
switches.
Power over Ethernet (PoE) is a networking feature defined by the IEEE 802.3af and IEEE 802.3at
standards. PoE lets Ethernet cables supply power to network devices over the existing data connection.
PoE-capable devices can be power-sourcing equipment (PSE), powered devices (PDs), or sometimes
both. The device that transmits power is a PSE, while the device that is powered is a PD. Here, the PSE is
a PoE switch. The PDs may be devices such as VoIP phones, wireless access points, and IP cameras.
For further information on PoE, refer to https://kb.netgear.com/209/What-is-PoE-Power-over-Ethernet
Follow the guidelines in this article to help resolve problems such as:
PD is not powering on.
PD is powering off intermittently.
Certain PDs are powering on while other PDs on the same PoE switch remain powered off.
PoE Standards
As mentioned above, PoE is defined by IEEE 802.3af (known as PoE) and 802.3at (known as PoE+)
standards. If your PoE switch supports IEEE 802.3at, it can supply power to both 802.3at and 802.3af
PDs. However, if your switch supports 802.3af only, it can only supply power to 802.3af (PoE) PDs.
PoE Budget
Your PoE switch has a PoE budget, that is, the total amount of power measured in watts that it can
supply to PDs at one time. Refer to the datasheet of your switch to verify its PoE budget. You should
ensure that the amount of power being drawn by your connected PDs does not exceed the PoE budget
of your switch. When calculating the amount of power being drawn by your PDs, you need to check the
PoE class to which the PD belongs. The PoE class of a PD determines the amount of power it will require,
as seen in the below table:
Device
Class
Standard
Range of Power
Delivered to the
Powered Device
Minimum Output at PoE
Switch Port (Minimum
Allocated)
Maximum Output at PoE
Switch Port (Maximum
Allocated)
0
PoE/PoE+
0.44W-12.95W
15.4W
16.2W
1
PoE/PoE+
0.44W-3.84W
4.0W
4.2W
2
PoE/PoE+
3.84W-6.49W
7.0W
7.4W
3
PoE/PoE+
6.49W-12.95W
15.4W
16.2W
4
PoE+
12.95W-25.5W
30.0W
31.6W
If for example, you have 10 PDs that are class 2, the total budget required is 70W.

Alternative Power Source
Where possible, check if the PD works with another PoE switch, or, where applicable check if the PD
powers on using an external power supply. If the PD does not power on from any of these power
sources, then the problem is likely with the PD.
Cabling
Check that the Ethernet cabling you are using is of good quality. It should be CAT5e or better. To be
certain, try testing with different cabling to that currently in use.
Port Configuration
In the admin page of the switch, ensure that the port connected to the PD is not administratively
disabled. Also, check that the PoE configuration of the port is valid (i.e. that PoE is enabled for the port,
and, set to the right standard and power limit, where applicable). For further information, refer to the
user manual for your switch.
Note: This does not apply to unmanaged switches and certain Web Managed Plus switches.
Firmware Update
It is possible that specific PoE-related problems may have been addressed in a firmware release. Refer
to the product support page for your switch to download the latest firmware and update it. For further
information, refer to the user manual for your switch and firmware release notes.
Note: This does not apply to unmanaged switches.
Reset Configuration
It is possible that a mis-configuration of the switch may cause problems. Reset the switch to factory
default settings. This will erase the current configuration so you should, where necessary, make a
configuration backup before completing this step.
Note: This does not apply to unmanaged switches.
Further Considerations
If your PoE switch model is GS105PE, then refer to https://kb.netgear.com/25541/GS105PE-PoE-
troubleshooting for guidance specific to this device.
If you see symptoms where you cannot power more than one PD in a set of adjacent ports, such as
scenarios outlined below, please contact NETGEAR Support. When contacting Support, it may be
beneficial to reference the troubleshooting you have already carried out as described in this article.
oOn a switch with greater than 16 ports, a PD on Port 1 powers on but a PD on ports 2, 3 & 4 does
not power on. Similarly, a PD on port 5 powers on but a PD on ports 6, 7 & 8 does not power on.
oOn a switch with 16 ports or less, a PD on Port 1 powers on but a PD on Port 2 does not power on.
Similarly, a PD on Port 3 powers on but a PD on Port 4 does not power on.
How to get support via the Guided Assistance button

1. Navigate to NETGEAR SUPPORT.
2. Enter the model number or product name to search for your product or browse to your product
using the product model categories.
NOTE: Guided Assistance is only available for certain models at this time. If the Guided Assistance
button is not present on the product support page for your product, it is not available for that
product yet.
3. On the product support page, click on Guided Assistance.
4. Launch the Guided Assistance portal.
If you have a MyNETGEAR account, click LOGIN and then enter your MyNETGEAR username and
password. Once logged into your account, your registered products appear in a drop down list. Select
the product to be supported from the list.
If you do not have a MyNETGEAR account and would like to create one, click Register Product.
If you do not wish to login you can choose to enter the serial number of your product. Click ENTER
SERIAL NUMBER and enter the serial number for your product, then click NEXT. You can find the
serial number printed on the label either on the bottom or back panel of your product. The serial
number is 13 characters long and comprised of alphanumeric characters.
For further assistance in finding the serial number, please see the articles below
How do I find my NETGEAR business product's serial number?
How do I find my NETGEAR home product’s serial number?
5. After selecting your product from the registered product list, or entering the serial number manually,
you are presented with troubleshooting guides.
If troubleshooting guides are not available for your product you will be presented with some
suggested articles from our Knowledge Base.
How can I troubleshoot LAN connectivity problems on my NETGEAR ProSAFE or Nighthawk Switch?
LAN connectivity problems on a switch can be caused by any of a wide range of factors. Below are some
simple things to check which can help to resolve common problems.
1. Power cycle the switch and other network equipment.
2. Ensure that the firmware on the switch and other network equipment is up to date. Firmware
updates addressing bugs and other issues are regularly released. For NETGEAR equipment, enter
your model number at https://www.netgear.com/support and go to Firmware and Software
Downloads to find the latest firmware. Note: This does not apply to unmanaged switches.
3. Reset the switch to factory default settings. This is helpful to erase any undesirable configuration
which may be causing problems. Where necessary, be prepared to re-configure any required settings
on the switch such as VLANs.

How does the flexible Power over Ethernet (PoE) budget work on my NETGEAR GS108LP, GS108PP,
GS116LP, or GS116PP switch?
Your NETGEAR GS108LP, GS108PP, GS116LP, or GS116PP Gigabit Unmanaged Ethernet Switch comes
with a single external power adapter. All four models have a built-in power over ethernet (PoE) power
selector switch that allows you to connect a different power adapter (sold separately) that can be used
to increase or decrease the PoE power available on the switch.
If you need a different power budget than what came with the switch, first purchase the optional power
adapter for the new PoE power budget you need. Then follow these steps:
1. Disconnect the old power adapter from the switch.
2. Move the slider on the back of the switch, next to the power input, to the setting that corresponds to
the new power adapter’s power input.
3. Connect the new power adapter.
Make sure that you move the slider to the correct wattage before you plug in the new power adapter.
Moving the slider without plugging in a different power adapter will not change your switch’s power
budget or the amount of power consumed.
The available power adapters and their corresponding PoE power budgets are shown in the following
table.
Power Adapter
PoE Budget
GS108LP and GS108PP
67.5W
60W
90W
83W
130W
123W
GS116LP and GS116PP
90W
76W
130W
115W
200W
183W
For more information about product availability and part numbers, see the Gigabit Unmanaged Switch
Series product pages.
What kind of Ethernet cables can I use with my NETGEAR switch?
Different categories of Ethernet cables can support different cable lengths and connection speeds. See
the following table for the recommended cable lengths and types for NETGEAR switches. The values in
this table apply to cable lengths of up to 100 meters (328 feet).
Speed
Ethernet Cable Type

100 Mbps
Category 5 (Cat 5) or higher
1 Gbps, 2.5 Gbps, or 5 Gbps
Category 5e (Cat 5e) or higher
10 Gbps
Category 6A (Cat 6A) or higher
For speeds of 10 Gbps, if the cable length is shorter than 45 meters (148 feet), you can use a Cat 5e
cable. Because you might not experience the speeds listed when using cable runs longer than 100
meters, we recommend using a higher category of Ethernet cable than the category listed for runs
longer than 100 meters.
For more information about the types of Ethernet cable, see https://www.howtogeek.com/70494/what-
kind-of-ethernet-cat-5e6a-cable-should-i-use/.
Safety Instructions and Warnings
Use the following safety guidelines to ensure your own personal safety and to help protect your system
from potential damage.
To reduce the risk of bodily injury, electrical shock, fire, and damage to the equipment, observe the
following precautions:
This product is designed for indoor use only in a temperature-controlled (0–50°C) and humidity-
controlled (10–90% relative humidity) environment.
Any device that is located outdoors and connected to this product must be properly grounded and
surge protected.
To the extent permissible by applicable law, failure to follow these guidelines could result in damage
to your NETGEAR product, which might not be covered by NETGEAR’s warranty.
Observe and follow service markings:
oDo not service any product except as explained in your system documentation.
oOpening or removing covers that are marked with the triangular symbol with a lightning bolt can
expose you to electrical shock. We recommend that only a trained technician services
components inside these compartments.
If any of the following conditions occur, unplug the product from the electrical outlet and replace the
part or contact your trained service provider:
oThe power cable, extension cable, or plug is damaged.
oAn object fell into the product.
oThe product was exposed to water.
oThe product was dropped or damaged.
oThe product does not operate correctly when you follow the operating instructions.

Keep your system away from radiators and heat sources. Also, do not block cooling vents.
Do not spill food or liquids on your system components, and never operate the product in a wet
environment. If the system gets wet, see the appropriate section in your troubleshooting guide, or
contact your trained service provider.
Do not push any objects into the openings of your system. Doing so can cause fire or electric shock
by shorting out interior components.
Use the product only with approved equipment.
Allow the product to cool before removing covers or touching internal components.
Operate the product only from the type of external power source indicated on the electrical ratings
label. If you are not sure of the type of power source required, consult your service provider or local
power company.
To avoid damaging your system, be sure that the voltage selection switch (if provided) on the power
supply is set to match the power at your location:
o115V, 60 Hz in most of North and South America and some Far Eastern countries such as South
Korea and Taiwan
o100V, 50 Hz in eastern Japan and 100V, 60 Hz in western Japan
o230V, 50 Hz in most of Europe, the Middle East, and the Far East
Be sure that attached devices are electrically rated to operate with the power available in your
location.
Use only approved power cables. If you were not provided with a power cable for your system or for
any AC-powered option intended for your system, purchase a power cable approved for your
country. The power cable must be rated for the product and for the voltage and current marked on
the product electrical ratings label. The voltage and current rating of the cable must be greater than
the ratings marked on the product.
To help prevent electric shock, plug the system and peripheral power cables into properly grounded
electrical outlets.
The peripheral power cables are equipped with three-prong plugs to help ensure proper grounding.
Do not use adapter plugs or remove the grounding prong from a cable. If you must use an extension
cable, use a three-wire cable with properly grounded plugs.
Observe extension cable and power strip ratings. Make sure that the total ampere rating of all
products plugged into the extension cable or power strip does not exceed 80 percent of the ampere
ratings limit for the extension cable or power strip.
To help protect your system from sudden, transient increases and decreases in electrical power, use
a surge suppressor, line conditioner, or uninterruptible power supply (UPS).

Position system cables and power cables carefully. Route cables so that they cannot be stepped on
or tripped over. Be sure that nothing rests on any cables.
Do not modify power cables or plugs. Consult a licensed electrician or your power company for site
modifications.
Always follow your local and national wiring rules.