NETGEAR MS324TXUP Manual

Hardware Installation Guide
24-Port Multigig Ethernet Ultra60 PoE++
Smart Switch with 4 SFP+ Ports and Optional
Remote/Cloud Management
Model MS324TXUP
NETGEAR, Inc.
350 E. Plumeria DriveOctober 2023
San Jose, CA 95134, USA202-12650-01

Support and Community
Visit netgear.com/support to get your questions answered and access the latest
downloads.
You can also check out our NETGEAR Community for helpful advice at
community.netgear.com.
Regulatory and Legal
Si ce produit est vendu au Canada, vous pouvez accéder à ce document en français
canadien à https://www.netgear.com/support/download/.
(If this product is sold in Canada, you can access this document in Canadian French at
https://www.netgear.com/support/download/.)
For regulatory compliance information including the EU Declaration of Conformity, visit
https://www.netgear.com/about/regulatory/.
See the regulatory compliance document before connecting the power supply.
For NETGEAR’s Privacy Policy, visit https://www.netgear.com/about/privacy-policy.
By using this device, you are agreeing to NETGEAR’s Terms and Conditions at
https://www.netgear.com/about/terms-and-conditions. If you do not agree, return the
device to your place of purchase within your return period.
Do not use this device outdoors. The PoE source is intended for intra building connection
only.
Trademarks
© NETGEAR, Inc., NETGEAR, and the NETGEAR Logo are trademarks of NETGEAR, Inc.
Any non-NETGEAR trademarks are used for reference purposes only.
Revision History
CommentsPublish DatePublication Part
Number
First publication.October 2023202-12650-01
2
24-Port Multigig Ethernet Ultra60 PoE++ Smart Switch with 4 SFP Ports Hardware Installation
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Contents
Chapter 1 Introduction
Overview................................................................................................6
Features.................................................................................................6
Safety instructions and warnings........................................................8
Chapter 2 Hardware Overview
Front panel model MS324TXUP.......................................................12
LEDs model MS324TXUP..................................................................12
Back panel model MS324TXUP........................................................13
Switch hardware interfaces...............................................................14
RJ-45 ports for 100/1000M and 2.5G BASE-T Ethernet
connectivity.....................................................................................14
Transceiver modules and cables for SFP+ fiber ports..............15
PoE port capacities and budget for model MS324TXUP..........15
Multi-function Reset/Factory Defaults button............................16
Restart (power-cycle) the switch..............................................17
Reset the switch to factory default settings but maintain the
registration status......................................................................17
Reset the switch to factory default settings and erase the
registration status......................................................................18
Chapter 3 Applications
Multispeed PoE++ and PoE+ access points...................................20
Multispeed backbone switching.......................................................21
Chapter 4 Installation
Step 1: Prepare the site......................................................................23
Step 2: Protect against electrostatic discharge..............................23
Step 3: Unpack the switch.................................................................24
Step 4: Install the switch....................................................................25
Install the switch in a rack..............................................................25
Install the switch on a flat surface.................................................26
Optional Step 5: Install an SFP transceiver module or cable........26
Step 6: Connect devices to the switch.............................................27
Step 7: Check the installation...........................................................28
Step 8: Apply power and check the LEDs.......................................28
3

Step 9: Manage the switch................................................................29
Chapter 5 Troubleshooting
Troubleshooting chart.......................................................................33
PoE troubleshooting suggestions....................................................34
Additional troubleshooting suggestions.........................................35
4
24-Port Multigig Ethernet Ultra60 PoE++ Smart Switch with 4 SFP Ports Hardware Installation
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1
Introduction
This hardware installation guide complements the installation guide that came with your
switch and applies to the MS324TXUP 24-Port Multigig Ultra60 POE++ Smart Switch.
This switch provides 24 1G and 2.5G Ethernet multispeed ports and four dedicated
SFP+ fiber ports supporting 1G and 10G.
The switch can provide Ultra60 PoE++ (802.3bt) on its 24 multispeed copper ports to
deliver power to PoE++ devices such as WiFi 6 access points, pan-tilt-zoom (PTZ) security
cameras, PoE speakers, and LED lighting. The switch can supply up to 60W PoE++ to
each copper port, with a maximum PoE power budget of 720W across all active PoE++
ports.
The chapter includes the following sections:
• Overview
• Features
• Safety instructions and warnings
Note: For more information about the topics that are covered in this manual, visit the
support website at netgear.com/support.
Note: For technical specifications, see the data sheet at
netgear.com/business/products/switches/smart. For switch documentation, including
the installation guide and user manual, visit netgear.com/support/download/ and search
for MS324TXUP.
5

Overview
The switch provides 24 Gigabit Ethernet multispeed copper ports and four dedicated
SFP+ fiber uplink ports that support 10G and 1G. The 24 multispeed ports support both
1G and 2.5G, and all ports use RJ-45 connectors.
The SFP+ ports require standard small form-factor pluggable (SFP) gigabit interface
converters (GBIC), also referred to as transceiver modules, or direct access cables (DAC),
which are sold separately from the switch.
The switch integrates line-rate, 200 Gbps, full-duplex, nonblocking, switch fabric.
The PoE model supports Ultra60 PoE++ (802.3bt) on all ports (that is, up to 60W PoE++
to each port) with a maximum PoE power budget of 720W across all active PoE++ ports.
Note: For information about application examples, see Applications on page 19.
You can install the switch freestanding or rack mounted in a wiring closet or equipment
room. The switch is IEEE compliant and offers low latency. All ports can automatically
negotiate to the highest speed, which makes the switch ideal for a mixed environment
with multispeed Gigabit and Fast Ethernet.
For speeds of up to 2.5 Gbps, use Cat 5e or higher-rated Ethernet cables terminated
with RJ-45 connectors.
Features
The switch supports the following key hardware features:
•24 multispeed Ethernet ports, each of which supports 1G and 2.5G.
•Four dedicated SFP+ fiber uplink ports, each of which is capable of 1G and 10G.
•PoE support for:
- 24 Ultra60 PoE++ (802.3bt) ports
-Total PoE power budget of 720W for the switch
•MAC table size of 32K.
•Three fans with variable speeds that can lower the noise level during low
temperatures.
•Acoustic noise at 25°C is equal to or less than 38 dBA
•200 Gbps line-rate, full-duplex, nonblocking switch fabric.
•Includes 19-inch rack-mount kit for rack installation.
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•Full compatibility with IEEE standards:
- IEEE 802.3 Ethernet
- IEEE 802.3u 100BASE-T
- IEEE 802.3z Gigabit Ethernet 1000BASE-SX/LX
- IEEE 802.3bz NBASE-T and MGBASE-T
-IEEE 802.3ae 10-Gigabit Ethernet over fiber (10GBASE-SR, 10GBASE-LR)
- IEEE 802.3ab 1000BASE-T
- IEEE 802.3i 10BASE-T
- IEEE 802.1Q VLAN tagging
-IEEE 802.3x Full-duplex flow control
- IEEE 802.3ad Link aggregation (LAG with LACP)
- IEEE 802.1ab LLDP
-IEEE 802.1p Class of Service (QoS)
- IEEE 802.1D Spanning Tree Protocol (STP)
- IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
- IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
- IEEE 802.1x RADIUS network access control
-IEEE 802.3az Energy Efficient Ethernet (EEE)
-IEEE 802.1af (PoE)
- IEEE 802.1at (PoE+)
- IEEE 802.1bt (PoE++)
•AutoSensing and autonegotiating capabilities for all ports.
•Auto Uplink™ technology is supported on all ports.
•Automatic address learning function to build the packet-forwarding information
table. The table contains up to 32K Media Access Control (MAC) addresses.
•Store-and-forward transmission to remove bad packets from the network.
•Active flow control to minimize packet loss and frame drops.
•Half-duplex backpressure control.
•Per-port status LEDs and system status LEDs.
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•NETGEAR green power-saving features:
-Energy efficiency mode that fully conforms to the IEEE802.3az standard
- Per-port automatic change to a lower power mode when the port link is down
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 and
humidity-controlled environment.
Note the following:
-For more information about the environment in which this product must operate,
see the environmental specifications in the appendix or the data sheet.
-If you want to connect the product to a device located outdoors, the outdoor
device must be properly grounded and surge protected, and you must install an
Ethernet surge protector inline between the indoor product and the outdoor
device. Failure to do so can damage the product.
WARNING: Before connecting the product to outdoor cables or devices, see
https://kb.netgear.com/000057103 for additional safety and warranty information.
Failure to follow these guidelines can result in damage to your NETGEAR product,
which might not be covered by NETGEAR’s warranty, to the extent permissible by
applicable law.
•Observe and follow service markings:
- Do not service any product except as explained in your product documentation.
Some devices should never be opened.
-If applicable to your product, opening 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.
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•If any of the following conditions occur, unplug the product from the power outlet,
and then replace the part or contact your trained service provider:
- Depending on your product, the power adapter, power adapter cable, power
cable, extension cable, or plug is damaged.
-An object fell into the product.
- The product was exposed to water.
- The product was dropped or damaged.
-The product does not operate correctly when you follow the operating
instructions.
•Keep the product away from radiators and heat sources. Also, do not block cooling
vents.
•Do not spill food or liquids on your product components, and never operate the
product in a wet environment. If the product 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 product. Doing so can cause fire
or electric shock by shorting out interior components.
•Use the product only with approved equipment.
•If applicable to your product, 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, if your product uses a power supply with a voltage
selector, be sure that the selector is set to match the power at your location:
-115V, 60 Hz in most of North and South America and some Far Eastern countries
such as South Korea and Taiwan
- 100V, 50 Hz in eastern Japan and 100V, 60 Hz in western Japan
-230V, 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.
•Depending on your product, use only a supplied power adapter or approved power
cable:
If your product uses a power adapter:
-If you were not provided with a power adapter, contact your local NETGEAR
reseller.
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-The power adapter must be rated for the product and for the voltage and current
marked on the product electrical ratings label.
If your product uses a power cable:
-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 power outlets.
•If applicable to your product, 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, power adapter cables, or 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 adapters, power adapter cables, power cables or plugs. Consult
a licensed electrician or your power company for site modifications.
•Always follow your local and national wiring rules.
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2
Hardware Overview
This chapter describes the switch hardware features.
The chapter includes the following sections:
• Front panel model MS324TXUP
• LEDs model MS324TXUP
• Back panel model MS324TXUP
• Switch hardware interfaces
11

Front panel model MS324TXUP
The following figure shows the front panel of model MS324TXUP.
Figure 1. Front panel model MS324TXUP
The following table describes the components on the front panel from left to right. The
components are clearly labeled on the front panel.
Table 1. Front panel components model MS324TXUP
DescriptionComponent
Power LED, Fan LED, and PoE Max LED.
For more information about the LEDs, see LEDs model MS324TXUP on page 12.
System LEDs
Recessed multi-function Reset button. For more information about the different reset
button functions, see Front panel model MS324TXUP on page 12.
Reset button
24 independent 2.5GBASE-T RJ-45 PoE++ ports that also support 100/1000BASE-T.
Each port provides a left LED that functions as the combined link, speed, and activity
LED and a right LED that provides PoE information.
For more information about the LEDs, see LEDs model MS324TXUP on page 12. For
more information about the PoE++ ports, see PoE port capacities and budget for model
MS324TXUP on page 15.
Ports 1 to 24
Four independent SFP+ ports in which you can install transceiver modules and direct
attach cables (see Transceiver modules and cables for SFP+ fiber ports on page 15).
These ports support 10G or 1G fiber transceiver modules. Each port provides a single
LED that functions as the combined link, speed, and activity LED.
For more information about the LEDs, see LEDs model MS324TXUP on page 12.
SFP Ports
LEDs model MS324TXUP
The following table describes the LEDs on the front panel of model MS324TXUP. Ports
1–24 each provide a left LED and right LED. The four SFP+ ports each provide a single
LED.
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Table 2. LEDs on the front panel of model MS324TXUP
DescriptionLED
Blinking green: The switch is booting.
Solid green: The switch is powered on and operating normally. If you changed the
management mode of the switch to NETGEAR Insight, the switch is not yet added to an
Insight managed network or not yet connected to the Insight cloud management server.
Solid blue: The management mode of the switch is NETGEAR Insight, the switch is added
to an Insight managed network, and the switch is connected to the Insight cloud
management server. You can manage and monitor the switch using the NETGEAR Insight
app or Insight Cloud portal.
Off: Power is not supplied to the switch.
Power LED
Solid green: The fans are operating normally.
Solid yellow: A problem occurred with the fans.
Fan LED
Off: More than 7W of PoE power is available.
Solid yellow: A PoE fault occurred. For more information, see PoE troubleshooting
suggestions on page 34.
Blinking yellow: The PoE Max LED was active in the previous two minutes.
PoE Max LED
Off: No link is established.
Solid green: A valid link at a speed of 2.5 Gbps is established.
Blinking green: The port is transmitting or receiving packets at 2.5 Gbps.
Solid yellow: A valid link at a speed of 100 Mbps or 1000 Mbps is established.
Blinking yellow: The port is transmitting or receiving packets at 100 Mbps or 1000 Mbps.
Ports 1–24, left LEDs
Link, speed, and
activity
Off: The port is not delivering PoE.
Solid green: The port is delivering PoE.
Solid yellow: A PoE fault occurred. For more information, see PoE troubleshooting
suggestions on page 34.
Ports 1–24, right LEDs
PoE status
Off: No module is installed in the SFP+ port or no link is established on the SFP+ port.
Solid green: The module in the SFP+ port established a valid link at a speed of 10 Gbps.
Blinking green: The module in the SFP+ is transmitting or receiving packets at 10 Gbps.
Solid yellow: The module in the SFP+ port established a valid link at a speed of 1 Gbps.
Blinking yellow: The module in the SFP+ is transmitting or receiving packets at 1 Gbps.
SFP+, LEDs
Link, speed, and
activity
Back panel model MS324TXUP
The switch integrates a fixed, internal power supply unit (PSU).
The back panel contains a Kensington lock slot and the AC power connector for power
input of 100–240V ~ 50–60Hz. The power supply draws a maximum of 10.0A.
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Figure 2. Back panel model MS324TXUP
Switch hardware interfaces
The following sections describe the hardware interfaces on the switch.
RJ-45 ports for 100/1000M and 2.5G BASE-T Ethernet
connectivity
All RJ-45 copper ports support autosensing. When you insert a cable into an RJ-45 port
and link two Ethernet devices, the switch automatically detects the maximum speed
and duplex mode (half-duplex or full-duplex)
So when you install a new cable with RJ-45 connectors, the ports at either end
auto-negotiate to determine if they will communicate at 1Gbps or 2.5Gps per minute.
The ports also interact to decide if they will support half-duplex (only one side transmits
at a time) or full-duplex (both sides transmit at the same time). This applies to all 24
ports supporting Ethernet cables terminated with 8-pin RJ-45 connectors.
Use Category 5e (Cat 5e) Ethernet cables terminated with RJ-45 connectors to make
1G, or 2.5G, connections.
To simplify the procedure for attaching devices, all RJ-45 ports support Auto Uplink
technology. This technology allows attaching devices to the RJ-45 ports with either
straight-through or crossover cables.
When you insert a cable into the switch’s RJ-45 port, the switch automatically performs
the following actions:
•Senses whether the cable is a straight-through or crossover cable.
•Determines whether the link to the attached device requires a normal connection
(such as when you are connecting the port to a computer) or an uplink connection
(such as when you are connecting the port to a router, switch, or hub).
•Automatically configures the RJ-45 port to enable communications with the attached
device. The Auto Uplink technology compensates for setting uplink connections
while eliminating concern about whether to use crossover or straight-through cables
when you attach devices.
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For model MS324TXUP, all copper ports (1 through 24) also support PoE++ (up to 60W
per port).
Transceiver modules and cables for SFP+ fiber ports
To enable fiber connections on the switch, SFP+ fiber ports accommodate standard
small form-factor pluggable (SFP) gigabit interface converters (GBICs, also referred to
as transceiver modules) and direct attach cables (DACs) for fiber connectivity. GBICs
and DACs are sold separately from the switch.
The switch supports the following NETGEAR SFP and SFP+ transceiver modules and
cables:
•Short-reach fiber transceiver modules:
-AGM731F: SFP transceiver 1000BASE-SX, SFP multimode LC GBIC
•Long-reach fiber transceiver modules:
-AGM732F: SFP transceiver 1000BASE-LX, SFP single mode LC GBIC
-AXM761: SFP+ transceiver 10GBASE-SR, SFP+ multimode LC GBIC
-AXM762: SFP+ transceiver 10GBASE-LR, SFP+ single mode LC GBIC
-AXM763: SFP+ transceiver 10GBASE-LRM, SFP+ long range, multimode GBIC
-AXM764: SFP+ transceiver 10GBASE-LR Lite, SFP+ single mode LC GBIC
•Gigabit transceiver modules:
-AGM734: SFP transceiver 1000BASE-T, SFP copper RJ-45 GBIC
-AXM765v2: SFP+ RJ-45 transceiver 10GBASE-T (80m, CAT6A) GBIC
•Direct attach cables:
-AXC761: SFP+ 1 m (about 3.3 ft) direct attach cable
-AXC763: SFP+ 3 m (about 10 ft) direct attach cable
For more information about NETGEAR SFP and SFP+ transceiver modules and cables,
visit netgear.com/business/products/switches/modules-accessories.
PoE port capacities and budget for model MS324TXUP
Model MS324TXUP supports eight Ultra60 PoE++ ports with the port capacities
described in the following table. The maximum PoE power budget for the switch is
720W across all active PoE++ ports.
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Supplied power is prioritized according to the port order, up to the total power budget
of the switch. Port 1 receives the highest PoE priority, while port 24 receives the lowest
PoE priority.
If the power requirements for attached powered devices (PDs) exceed the total power
budget of the switch, the PoE power to the device on the highest-numbered active PoE
port is disabled to make sure that the devices connected to the higher-priority,
lower-numbered PoE ports are supported first.
Although a device might be listed as an 802.3bt PoE++-powered or 802.3at
PoE+-powered device, it might not require the maximum power limit that is specified
by its IEEE standard. Many devices require less power, allowing all 24 PoE ports to be
active simultaneously when the devices correctly report their PoE class to the switch.
Table 3. PoE classes and PoE power allocations
Power Delivered to
the PD
Maximum Power
Reserved for the PD
Class DescriptionCompatible PoE
Standard
Device
Class
0.44W–13.0W15.4WDefault power (full)PoE, PoE+, and PoE++0
0.44W–3.84W4.0WVery low powerPoE, PoE+, and PoE++1
3.84W–6.49W7.0WLow powerPoE, PoE+, and PoE++2
6.49W–13.0W15.4WMid powerPoE, PoE+, and PoE++3
13.0W–25.5W30.0WHigh powerPoE+ and PoE++4
25.5W–40.0W45.0WUltra high powerPoE++5
40.0W–51.0W60.0WUltra high powerPoE++6
The previous table shows the standard power ranges, calculated with the maximum
cable length of 328 feet (100 meters). If a powered device (PD) receives insufficient PoE
power from the switch, consider using a shorter cable.
For more information about PoE, see the user manual, which you can download by
visiting netgear.com/support/download.
Multi-function Reset/Factory Defaults button
The switch provides a recessed, multi-function Reset/Factory Defaults button on the
front panel. Depending on how long you press the button, this button lets you restart
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(power-cycle) the switch or reset it to factory defaults, either with or without maintaining
the registration status. For more information, see the following sections.
Note: Before you restart or reset the switch, be sure to first export and save the
configuration file, so that you can restore the current switch configuration settings if
needed.
Restart (power-cycle) the switch
Note: We recommend that you export and save the configuration file before you press
the Reset/Factory Defaults button to restart the switch.
To restart the switch using the Reset/Factory Defaults button:
1. Insert a tool such as a straightened paper clip into the opening.
2. Press the Reset/Factory Defaults button for less than 5 seconds.
CAUTION: Do not press the button for more than 5 seconds!
During the restart process, the Power LED lights blinking green.
Reset the switch to factory default settings but maintain the registration
status When you reset the switch to factory default settings but maintain the registration
status, all settings are erased and the switch restarts with factory default settings. The
NETGEAR registration status is maintained and not erased. After the switch is reset, you
will need to go through the initial login and setup process again.
Note: We recommend that you export and save the configuration file before you press
the Reset/Factory Defaults button to reset the switch.
To use the Reset/Factory Defaults button to reset the switch to factory default settings
but maintain the registration status:
1. Insert a tool such as a straightened paper clip into the opening.
2. Press the Reset/Factory Defaults button for more than 5 seconds but less than
10 seconds.
CAUTION: Do not press the button for more than 10 seconds or the device
registration flag will be erased from the switch and you will need to enter a registration
key or log into your MyNETGEAR.com account and manually enter your device
registration information.
During the reset process, the Power LED lights blinking green.
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Reset the switch to factory default settings and erase the registration
status Use this procedure to erase all settings, reset the switch to factory defaults, and
erase the registration flag from the switch. After the switch is reset, you will need to
enter a registration key or log in to your MyNETGEAR.com account, and then go through
the initial login and setup process again.
Note: We recommend that you export and save the configuration file before you press
the Reset/Factory Defaults button to reset the switch.
To use the Reset/Factory Defaults button to reset the switch to factory default settings
and erase the registration status:
1. Insert a tool such as a straightened paper clip into the opening.
2. Press the Reset/Factory Defaults button for more than 10 seconds.
CAUTION: After the switch is reset, you will need to enter a registration key or log
in to your MyNETGEAR.com account and manually enter your device registration
information, and then go through the initial login and setup process again.
During the restart or reset process, the Power LED lights blinking green.
Hardware Installation Guide18Hardware Overview
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3
Applications
The switch is designed to provide flexibility in configuring multispeed network
connections. This chapter shows application examples with 10G, 5G, 2.5G, and 1G
connections, and multispeed PoE++ connections.
The chapter includes the following sections:
• Multispeed PoE++ and PoE+ access points
• Multispeed backbone switching
19

Multispeed PoE++ and PoE+ access points
Model MS324TXUP supports 24 PoE++ ports. The switch can supply up to 60W PoE++
(802.3bt) to each port up to its total maximum PoE power budget of 720W across all
active PoE++ ports.
The following figure shows an example of how you can connect multispeed (1G and
2.5G) PoE++ and PoE+ access points and cameras. The uplink uses an optional
purchased 10G fiber tranceiver The switch is connected to a 10G router.
Figure 3. Multispeed PoE++ and PoE+ access points
Table 4. Line colors in the figure
DescriptionLine Color
PoE++ (802.3bt) connection, for example, to a PoE++ WiFi 6 access point.Blue
PoE+ (802.3at) connection, for example, to a PoE+ WiFi access point.Green
Non-PoE 10G uplink connection to a network router and to the Internet.Yellow
Supplied power is prioritized according to the port order, up to the total power budget
of the device. Port 1 receives the highest PoE priority, while port 24 receives lowest PoE
priority.
If the power requirements for attached devices exceed the total power budget of the
switch, the PoE power to the device on the highest-numbered active PoE port is disabled
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