Panasonic Switch-S24GPWR User manual

Installation Guide
 Thank you for purchasing our product.
 This document provides important information about safe and proper
operations of this Switching Hub.
 Please read the "Important Safety Instructions" on pages from 3 to 5.
 Any problems or damage resulting from disassembly of this Switching Hub
by customers are not covered by the warranty.
I0716-10719 Printed in Japan
Switch-S24GPWR
Model No. PN25249-TH
PN25249-MY
PN25249-ID
PN25249-SG
2-12-7, Higashi-Shimbashi, Minato-ku, Tokyo Japan, 105-0021
©2019

Contents
2
Important Safety Instructions
Basic Instructions for the Use of This Product
1 Product Outline
1.1 Features
1.2 Specifications
1.3 Accessories
1.4 Basic operation
2 Part Names and Functions
2.1 LED display change
2.2 PoE power supply function
3 Installation and Configuration
3.1 Mounting to rack
3.2 Configuration of IP address (Basic)
Troubleshooting
3
6
7
7
8
9
9
10
13
15
16
16
16
18

3
This chapter contains important safety instructions for preventing bodily
injury and/or property damage. You are required to follow them.
This symbol indicates a potential hazard
that could result in serious injury or death.
 Severity of bodily injury and/or property damage, which could result from incorrect
use of the Switching Hub, are explained below.
 The following symbols are used to classify and describe the type of instructions to
be observed.
Important Safety Instructions
WARNING
CAUTION This symbol indicates safety instructions.
Deviation from these instructions could lead
to bodily injury and/or property damage.
This symbol is used to alert
users to what they must do.
This symbol is used to alert
users to what they must not do.
WARNING
Do not use power supply other than AC 100 - 240 V.
Deviation could lead to fire, electric shock, and/or equipment failure.
Do not handle the power cord with wet hand.
Deviation could lead to electric shock, and/or equipment failure.
Do not handle this Switching Hub and connection cables during a
thunderstorm.
Deviation could lead to electric shock.
Do not disassemble and/or modify this Switching Hub.
Deviation could lead to fire, electric shock, and/or equipment failure.
Do not damage the power cord. Do not bend too tightly, stretch, twist, bundle
Do not unplug nor plug in the power plug with wet hands.
Deviation could lead to electrical shock, and/or equipment failure.
Do not insert nor drop any foreign objects such as metal or readily combustible
things into the inside through the openings.
Deviation could lead to fire, electrical shock, and/or equipment failure.
Do not store or use the Switching Hub in places where it might get splashed
with liquids such as water, in places with a lot of humidity, in places with
conductive dust, or in places where there are corrosive and combustible gases.
Deviation could lead to fire, electrical shock, and/or equipment failure.
Do not store or use the Switching Hub in places where it will be exposed to
direct sunlight or high temperatures.
The temperature inside will rise, which may cause fire.
Do not store or use the Switching Hub in places where there are lots of
vibrations and impacts, or in unstable areas.
It might fall, which may cause injuries and/or equipment failure.
with other cord, pinch, put under a heavy object and/or heat it.
Damaged power cord could lead to fire, short, and/or electric shock.

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4
WARNING
CAUTION
Do not put the Switching Hub into fire.
Deviation could lead to explosion and/or fire.
Do not insert nor drop any foreign objects such as metal or readily combustible
things into the inside through the openings, twisted pair ports, or console ports.
Deviation could lead to fire, electrical shock, and/or equipment failure.

Use the bundled power cord (AC 100 – 240 V specifications).
Deviation could lead to electric shock, malfunction, and/or equipment failure.

Unplug the power cord in case of equipment failure.
Deviation, such as keeping connected for a long time, could lead to fire.

Connect this Switching Hub to ground.
Deviation could lead to electric shock, malfunction, and/or equipment failure.

Connect the power cord firmly to the power port.
Deviation could lead to electric fire, shock, and/or malfunction.

Unplug the power cord if the STATUS LED blinks in orange (system fault).
Deviation, such as keeping connected for a long time, could lead to fire.

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
Handle the Switching Hub carefully so that fingers or hands may not be
damaged by twisted pair port, SFP extension slot, console port, or power
cord hook block.
Do not connect any other devices except for 10BASE-T/100BASE-TX/1000BASE-T
devices to the twisted pair ports.
Deviation could lead to equipment failure.
Unplug the power plug when there is a malfunction.
Deviation could lead to fire if the power is allowed to be supplied for extended periods
of time.
Be sure to connect the ground cable.
Otherwise this might cause electrical shocks, misoperations and malfunctions.
Connect the Switching Hub via the supplied power cord to the outlet which is
connected to the ground.
If the outlet is not connected to a ground, connect the ground cable to the ground
terminal screw.

Important Requests on Protection from Lightning Strike
If you connect a network camera, a wireless access point, or other devices that can be
affected by a lightning strike (in particular, devices installed outdoors) to the twisted pair
port of this Switching Hub, a lightning surge current/voltage may be conducted to this
Switching Hub through the twisted pair cable, leading to malfunction. If you connect such a
device, it is strongly recommended that you install a surge protective device (SPD) on the
twisted pair port side of this Switching Hub.
A lightning surge current/voltage may be conducted to this Switching Hub through the
power supply or ground wire connected to the power port, leading to malfunction. If a
lightning surge current/voltage may flow in through the power supply or ground wire, it is
recommended that you install a surge protective device (SPD) on the power port side of this
Switching Hub.
5
CAUTION


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

This Switching Hub is to be periodically serviced in order to maintain its
performance.
Please choose a product administrator, and have them be sure to implement
periodic maintenance. When doing maintenance, check the inspection chart that is
posted on our website which has the requisite items listed on it.
When using this Switching Hub to design systems, use it after applying
appropriate measures such as setting up redundant configurations.
Communications failures might be generated due to causes such as malfunctions or
misoperations while the Switching Hub is being used.
When using this Switching Hub for applications which require extremely high
reliability, be careful to expend all possible means to ensure safety and
reliability.
This Switching Hub was not designed nor manufactured with the intention that it be
used for applications (in use with railways, aviation, and medical care, etc. whereas
the influence rate due to communications failures is extremely high in regard to
systems that directly affect systems and human lives) which require extremely high
reliability.
It is strongly recommended that a lightning arrester (SPD) be installed on the
twisted pair port side and the power supply side of this Switching Hub.
Malfunctions might be caused due to overcurrent and overvoltage due to the effects
of lightning strikes.
It is recommended that this Switching Hub be replaced about five years after it
has been installed.
This may vary depending upon conditions such as utilisation rates and usage
environments, but performance might decrease due to the age-related degradation,
etc. of components.
Be careful in regards to environmental restrictions whereby the Switching Hub
can be used.
Please isolate the business power lines and communications lines. Isolate distribution
lines and other distribution lines, and low current power lines, optical fiber cables,
metallic water conduits, and gas conduits, etc. Noise may be generated in the
communications lines which might cause communications glitches.

Basic Instructions for the Use of This Product
For inspection and/or repair, consult the retailer.
Use commercial power supply from a wall socket, which is close and easily accessible to this
Switching Hub.
Unplug the power cord when installing or moving this Switching Hub.
Unplug the power cord when cleaning this Switching Hub.
Use this Switching Hub within the specifications. Deviation could lead to malfunction.
Do not touch the metal terminal of the RJ45 connector, the modular plug of connected
twisted pair cable. Do not place charged objects in the proximity of them. Static electricity
could lead to equipment failure.
Do not put the modular plug of the connected twisted pair cable on objects that can carry
static charge, such as carpet. Do not place it in the proximity. Static electricity could lead to
equipment failure.
Do not put a strong shock, including dropping, to this Switching Hub. Deviation could lead to
equipment failure.
Before connecting a console cable to the console port, discharge static electricity, for example
by touching metal appliance (do not discharge by touching this Switching Hub).
Do not store and/or use this Switching Hub in the environment with the characteristics listed
below.
(Store and/or use this Switching Hub in the environment in accordance with the
specification.)
- High humidity. Possible spilled liquid (water).
- Dusty. Possible static charge (such as carpet).
- Under direct sunlight.
- Possible condensation. High/low temperature exceeding the specifications environment.
- Strong vibration and/or strong shock.
Please use this Switching Hub in locations where the ambient temperature ranges from 0 to
45°C.
Failure to meet the above conditions may result in fire, electric shock, breakdown, and/or
malfunction. Please take notice because such cases are not covered by the guarantee.
Additionally, do not cover the bent hole of this Switching Hub.
Deviation could lead to high internal temperature and/or malfunction.
* The use of this Switching Hub outside the operating ambient temperature range causes the
protective device to trip, stopping the PoE power supply.
When using two Switching Hubs, do not stack them. When you place them side by side, allow
for a space of 20 mm or more between them.
When stacking Switching Hubs, leave a minimum of 20 mm space between them.
1. Please note that Panasonic shall not bear any liability whatsoever for any damages
(this shall include lost earnings, lost opportunities, etc. but this is not restricted to these
things) which were generated in relation to damages caused by operations and usage,
or the inability to use this Switching Hub, whereby the customer does not follow
this Installation Guide.
2. The contents described in this document may be changed without prior notice.
3. For any question, please contact the retailer where you purchased the product.
6

Product Outline
Switch-S24GPWR is an Ethernet Switching Hub with management function having 24
ports of 10/100/1000BASE-T.
Ports 1 to 24 support IEEE802.3af PoE power supply function.
1.1 Features
7
1
 Ports 1 to 24 are 10/100/1000BASE-T ports corresponding to auto negotiation.
Also their speed and communication mode can be switched by configuration.
 Ports 1 to 24 can supply power conforming with IEEE802.3af. Supplying power up
to 15.4 W per port, and up to 124 W in total is possible.
 All twisted pair ports support straight/cross cable auto sensing function. Simply
connect devices with straight cables, whether it is a terminal or a network device.
(This function does not work if the port communication configuration is set at Fixed
or Link Aggregation. Ports 1 to 22 are set at MDI-X. (default))
 Has the IEEE 802.3az (LP1)-compliant Energy Efficient Ethernet function (hereafter
referred to as EEE). This function automatically saves power when there is no data
communication in the linkup state, allowing a reduction in the power consumption
of each port.
 Embedded power saving mode detects the connection status automatically and
saves power consumption to minimum.
 VLAN function allows free grouping of up to 256 VLANs.
 The IEEE802.1p compatible QoS function is supported.
 Has a loop detection function, which notifies when a loop occurs with the
corresponding port LED and automatically shuts down the looped port.
 Has a loop detection history function, which notifies when a loop occurs with the
corresponding LED and enables a network administrator to identify the looped port
after the loop is removed.
 Using the PoE scheduler function, power supply control for PoE can be scheduled.

1.2 Specifications
8
Product Outline
1
Interface Twisted pair port 1–24: RJ45 connector
Transmitting and receiving network system
IEEE 802.3 10BASE-T
IEEE 802.3u 100BASE-TX
IEEE802.3ab 1000BASE-T
Energy Efficient Ethernet function
IEEE 802.3az (LP1)
Console port: RJ45 connector
RS-232C (ITU-TS V.24)
Switching mode Store and Forward method: Forwarding rate
10BASE-T: Max. 14,880 pps/port
100BASE-TX: Max. 148,800 pps/port
1000BASE-T: Max. 1,488,000 pps/port
MAC Address table: Max. 8K entry/unit
Buffer: 512MByte/unit
* EAP frame, BPDU frame transmission
Link Aggregation IEEE802.3ad
Configurable up to 8 groups (Max. 8 ports per group)
VLAN IEEE802.1Q tagging VLAN protocol compatible
(Max. 256 groups including the default VLAN)
Port based VLAN, Internet Mansion function
QoS IEEE802.1p compatible, Supports 4 priority queues
Management method Telnet, Console, WEB control screen
Power supply function Ports 1 to 24 support the IEEE802.3af compatible power supply
function.
Maximum power supply: 15.4 W per port, 124 W in total
Power supply method Altervative A(Using idle line 1,2,3,6)
Others Port Monitoring
PoE Scheduler
Power supply AC 100–240V, 50/60 Hz, 2.6 A
Power consumption Normally, Max. 162 W (24.1 W when not supplying power),
Min. 12.7 W
Storage environment Temperature: -20–70°C, Humidity: 10–90% RH (no condensation)
Mass (Weight) 3,600 g
External dimensions 44 mm (Height) × 440 mm (Width) × 256 mm (Depth) (Excluding
protruding sections)
Operating environment Temperature: 0–45°C, Humidity: 20–80% RH (no condensation)
Caution: Failure to meet the above conditions may result in fire,
electric shock, breakdown, and/or malfunction.
Please take notice because such cases are not covered by
the guarantee.
* The use of this Switching Hub outside the operating ambient
temperature range causes the protective device to trip, stopping
the PoE power supply.

1.3 Accessories
9
Installation Guide (this document) 1
CD-ROM (PDF version of Operating Instructions) 1
Rubber foot 4
Mount brackets (for mounting on a 19-inch rack) 2
Screws (for mounting on a 19-inch rack) 4
Screws (for connecting the mount brackets to the Switching Hub) 8
Power cord 1
* Just the PN25249-TH has 1 Installation Guide in Thai (a total of 2 guides).
Please be sure to confirm the content.
Please contact our distributor if any of the contents are insufficient.
1.4 Basic operation
This Product does not have a power ON/OFF switch. Connect the supplied power
cord to this Switching Hub and connect the other end into an electric outlet.
This Switching Hub operates at AC 100 - 240 V (50/60 Hz).
When power is supplied, all the LEDs are turned ON.
Then, POWER LED (Power) lights in green, STATUS/ECO LED (Status/ECO mode)
lights in orange, and self-diagnosis of hardware is executed.
On completion of self-diagnosis, POWER LED (Power), STATUS/ECO LED
(Status/ECO mode) and the Switching Hub starts operation as a Switching Hub.
As this Switching Hub succeeds in communicating with a terminal connected to each
port, LED of the port lights up.
When the terminal is not operating normally, for example when power is not
supplied to the terminal, LED is not lighted.
Quantity
For configuration and management method, please see the PDF version
Operating Instructions in CD-ROM.
(*)
[Power Cord]
The following power cords are supplied as per the intended nation of delivery.
Locale
Thailand 250 VAC 6 A TIS166-2549-
Indonesia 250 VAC 10 A
250 VAC 10 A
250 VAC 5 A
CEE7/7
BS1363
BS1363
-
13 A
5 A
Malaysia
Singapore
Product Number
PN25249-TH
PN25249-ID
PN25249-MY
PN25249-SG
Power Cord Rating FUSE Rated Current Plug Type

Part Names and Functions
10
2
MAC Address label Power port
Serial number labelGround terminal
screw
Magnified view on the next page
Power cord hook block
10/100/1000BASE-T port
Back panel
Front panel
Power port
Connect the supplied power cord to this port and connect the other end into an
electric outlet.
Power cord hook block
If the supplied power cord is hanged to this block, the cord becomes hard to pull
out from the power port.
Ground terminal
Only qualified personnel should install minimum 18AWG green-and-yellow stranded
copper wire to Ground terminal screw.
10/100/1000BASE-T port (ports 1-24) supporting PoE power supply
The port can supply PoE power conforming with IEEE802.3af. Connect a Powered
Device conforming with IEEE802.3af. Devices such as 10/100/1000BASE-T terminal,
hub, repeater, bridge, and Switching Hub can be connected to this port. Install the
device so that the length of twisted pair cable (Cat5e or above) becomes 100 m or
less.
Console port
Connect a VT100 compatible terminal, etc. with this port to configure or manage
this Switching Hub.
Use the RJ45-D-Sub 9-pin console cable to connect a console.
Transmission mode : RS-232C
Transmission speed : 9,600 bps
Stop bit : 1 bit
Flow control : None
Emulation mode : VT100
Data length : 8 bits
Parity control : None
Transmission connector : RJ45
Console port

11
Power LED Collision LED PoE limit LED
Status/ECO mode LED
Power supply mode LED
GIGA mode LED
Speed modeLED
DUPLEX mode LED
Loop History mode LED
LED DISPLAY CHANGE BUTTON
See Table 1 (next page)
for the LED indications
of each port.
POWER LED (Power)
Green Light : Power is ON.
Off : Power is OFF.
ANY COL. LED (Collision)
Orange Light : During half-duplex operation, packet collision is occurring in
either port.
PoE LIM. LED (PoE limit)
Off : Supplying power in the range from 0 to 117 W.
Green Light : Supplying power in the range from 117 to 124 W.
Orange Blink : A single port's power supply is exceeding the upper limit, or
the total power supply of the Switching Hub is exceeding 124 W.
STATUS/ECO LED (Status/ECO mode)
Green Light : Operating in status mode.
Green Blink : Operating in ECO mode.
All Port LEDs (left) are turned off.
Orange Light : Starting
Orange Blink : Malfunction (Contact the seller.)
PoE LED (Power supply mode)
Green Light : Operating in power supply mode.
GIGA LED (GIGA mode)
Green Light : Operating in GIGA mode.
100M LED (Speed mode)
Green Light : Operating in Speed mode.
FULL LED (DUPLEX mode)
Green Light : Operating in DUPLEX mode.
LOOP HISTORY LED (Loop History mode)
Green Light : Operating in Loop History mode.
Green Blink : Loop is occurring, or occurred within
the last 3 days.

12
Port LED
Left
Right
Display mode
STATUS/ECO
Behavior Description
Green Light Link is established.
Green Blink Transmitting and receiving data.
Off No device connected.
Table 1. Port LED of 1–24 indicates each mode in the following way
PoE Green Light Supplying power normally (ports 1 to 24
only).
Orange Blink Overload caused by a single port or the
total power supply of the Switching
Hub (ports 1 to 24 only).
Off Not supplying power or no PoE-powered
device connected.
GIGA Green Light Link is established at 1000 Mbps.
Off Link is established at 100 Mbps or 10
Mbps, or no device is connected.
100M Green Light Link is established at 100 Mbps.
Off Link is established at 1000 Mbps or 10
Mbps, or no device is connected.
FULL Green Light Link is established at full-duplex.
Off Link is established at half-duplex or no
device is connected.
-
Orange Light Shutting down by loop detection.
Off Not shutting down by loop detection.
LOOP HISTORY Green Light Loop has been detected within the
last 3 days.
Off No loop detection history.
Part Names and Functions
2
Port LED (Left)
Port LED (Right)

13
Using "LED DISPLAY CHANGE BUTTON" on the front panel, you can switch the
following operations: indication of a connection status with a connected terminal
(Status mode), indication of PoE power supply (PoE mode), indication of
communication speed at 1000 Mbps (GIGA mode), indication of communication
speed at 100 Mbps or 10 Mbps (Speed mode), indication of transmission mode of
full-duplex or half-duplex (DUPLEX mode), indication of a port having a history of loop
occurrence (Loop History mode), or turning off LEDs of all ports (ECO mode).
LED DISPLAY CHANGE BUTTON
Mode at booting is called as Base mode. There are two types of Base modes, which
are Status mode (default setting at shipment) and ECO mode.
To switch the Base mode, keep pressing "LED DISPLAY CHANGE BUTTON" for 3
seconds or more.
When switching is done successfully, 5 LEDs of STATUS/ECO LED, PoE LED, GIGA LED,
100M LED, and FULL LED are lighted once at the same time, they turned off, and
then it enters a Base mode. After switching to PoE mode, GIGA mode, Speed mode,
DUPLEX mode, or Loop History mode, and "LED DISPLAY CHANGE BUTTON" is not
used for 1 minute, it automatically returns to Base mode (Status mode or ECO mode).
Base mode is held even if power supply was turned OFF.
How to switch the display using the LED DISPLAY CHANGE BUTTON
Two Base modes and other modes
2.1 LED display change

14
Switch two types of Base modes and their LEDs in the following way:
When Base mode is Status mode (factory default setting)
* The Base mode is retained even after the power is turned off.
The mode LEDs correspond to the LEDs of Ports 1 to 24 as shown in Table 1. (See p. 12.)
When Base mode is ECO mode
Switch Base mode (keep pressing "LED DISPLAY
CHANGE BUTTON" over 3 seconds)
Press "LED DISPLAY CHANGE BUTTON" manually.
Automatic
Automatically returns to Base mode after 1 minute.
Boot
Status mode
(Base mode) GIGA mode Speed mode DUPLEX
mode
Loop History
mode
About Loop detection
Turns on the port LED with a orange light when a loop occurs in the corresponding port. At this
time, the relevant port automatically shuts down (default setting: 60 sec.) to prevent loop from
occurring.
If the loop is still not removed, the port will shut down again. Remove the loop while the port is shut
down.
During loop is occurring, or if loop has occurred within the latest 3 days, LOOP HISTORY LED blinks
to notify this. It is possible to switch loop detection setting (OFF/ON) by using a console cable (for
detail, see the attached CD-ROM) or by pressing "LED DISPLAY CHANGE BUTTON" for 10 seconds or
more. (The default setting is ON.) When it is switched successfully, LOOP HISTORY LED lights up and
setting is complete.
If you wish to clear loop detection history, turn OFF once the power supply of the Switching Hub
and turn it ON again.
Then, loop detection history is deleted.
The Switching Hub can hold up to 64 loop history logs.
PoE mode
Press "LED DISPLAY CHANGE BUTTON" manually.
Automatic
Automatically returns to Base mode after 1 minute.
Boot
ECO mode
(Base mode)
PoE
mode
Status
mode
GIGA
mode
Speed
mode
DUPLEX
mode
Loop History
mode
Part Names and Functions
2

15
When the requested power supply of the Switching Hub exceeds 124 W, causing an overload, you can
check a port that stopped supplying power by changing the mode LED display to that of PoE mode.
Remove the cable from the port with its LED blinking orange to reduce the requested power supply of
the Switching Hub to 124 W or below.
You can set/change the priority of the power supply from the console.
(By factory default, the same priority is given to all Ports 1 to 24.)
Ports 1 to 24 support IEEE802.3af PoE. This function allows for power supply of up to 15.4 W through
each port and 124 W in total through the Switching Hub.
PoE power supply function operation overview
Power supply while the PoE LIM. LED is blinking orange (overload caused by
the total power supplied by the Switching Hub)
When the requested power supply of a single port exceeds 15.4 W, causing an overload, the power
supply is stopped. You can check a port that stopped supplying power by changing the mode LED
display to that of PoE mode.
Remove the cable from the port with its LED blinking orange.
Caution: 1) Some PoE-powered devices may have a large difference in power consumption between
their maximum power use condition and normal condition. Carefully configure them so
that the upper limit of power supply will not be exceeded.
2) If you don't set a priority for power supply or if the same priority is given, note that the
power supply priority is assigned to the ports in ascending order of the port numbers.
(When the requested power supply exceeds 124 W, power supply to a port with a higher
port number will be stopped first.)
Power supply while the overload is caused by a single port
2.2 PoE power supply function
* For configuration and management method, please see the PDF version Operating
Instructions in CD-ROM.
Port LEDs (left) 1 to 24 (with the PoE mode
LED turned on)
Green Light: Supplying power normally.
Orange Blink: Overload caused by a single port.
(Requested power is exceeding
15.4 W.)
Off: Not supplying power or no
PoE-powered device connected.
PoE LIM. LED (PoE limit)
Off: Supplying power in the range from
0 to 117 W.
Green Light: Supplying power in the range from
117 to 124 W.
Orange Blink: A single port's power supply is
exceeding the upper limit, or the
total power supply of the
Switching Hub is exceeding 124 W.

16
3.2 Configuration of IP address (Basic)
(1) Connect this Switching Hub and PC with a RJ45–DSub 9-pin console cable and
start up the terminal emulator (ZEQUO assist Plus, etc.).
(2) Pressing Enter key 3 times opens Login screen. Enter Login name and Password
(the default is "manager" for both). (Screen 1)
(3) Main Menu is displayed. (Screen 2)
Press "B" to select [B]asic Switch Configuration. The next hierarchical menu is
displayed. (Screen 3)
(4) Press "I" to select System [I]P Configuration. The screen to enter some addresses
is displayed. (Screen 4)
(5) Press "I" to set an IP Address, press "M" to set a Subnet Mask, or press "G" to set
a Default Gateway. Then enter the specified address. (Screen 4)
(6) After completing the settings, select [Q]uit to previous menu twice to return to
Main Menu (Screen 2). Here, select Save Configuration to [F]lash (Screen 5)
and the command prompt changes to "Save current configuration? (Y/N)." Press
"Y" to save the settings.
(7) From terminals connected to network, confirm that the settings are reflected
correctly by executing PING test for entered address.
Installation and Configuration
3
3.1 Mounting to rack
Take out the supplied 2 mounting
brackets (for 19-inch rack) and 8
screws (for fixing the main unit and
the mounting bracket), and fix the
brackets to the main unit by
tightening screws into 4 holes located
at the sides. Then, mount this
Switching Hub firmly to the rack
using the supplied 4 screws (for
19-inch rack) or screws furnished at
the rack.

17
Screen 1 Screen 2
Screen 3
Screen 5
Screen 4
* For the following, please see the PDF version Operating Instructions
in CD-ROM.
- Detailed configuration and management methods using the CLI.
- Configuration and management method from ZEQUO assist Plus.

Troubleshooting
18
If you find any problem, please take the following steps to check.
LED
The POWER LED (Power) is not lit.
Check if the power cord is disconnected. Please confirm that the power cord is
securely connected to the power port.
Is the Switching Hub operated at temperature in the range from 0 to 45°C?
Ensure that the operating temperature is within the specified range.
The use of this Switching Hub outside the operating ambient temperature
range causes the protective device to trip, stopping the PoE power supply.
The Port LED is not lit in Status mode.
Is the cable correctly connected to the target port?
Is the cable appropriate to use?
Is the terminal connected to the relevant port conforming with 10BASE-T,
100BASE-TX, or 1000BASE-T standard?
Auto-negotiation may have failed.
Check the port settings of this Switching Hub or the terminal settings.
Did you select a correct Port LED display mode using the LED DISPLAY
CHANGE BUTTON?
The Port LED (Right) lights in orange.
Loop is occurring. By removing the loop, orange LED will be turned off.
LOOP HISTORY LED Blinks in orange.
This is to notify that there is a port in which a loop is occurring, or has been
removed within 3 days.
Communications are slow.
Are the communication speed and mode settings correct?
If the communication mode setting is incorrect, the operation may be being
performed in the half-duplex mode.
Please reconfirm autonegotiation setting.
Do not set the connected equipment to forced full-duplex.
Is not the utilization ratio of the network to which this Switching Hub is
connected too high?
Try separating this Switching Hub from the network.

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Communications fail.
Is the link-up correct?
When the Power Saving Mode (power saving mode of the MNO series) or EEE
(IEEE 802.3az Energy Efficient Ethernet function) is enabled, some connected
terminals may not be correctly linked. Change the setting as follows.
1. Change the Power Saving Mode setting to Disabled.
2. Change the EEE (IEEE 802.3az) setting to Disabled.
Is the Port LED (right) lit in orange?
If the Port LED (right) lit in orange, the port is shut down by the loop detection
function. Eliminate the loop connection of the device connected to the port
first, and then wait longer than the time required for automatic recovery from
the shutdown by the loop detection function, or release the port shutdown
from the setting screen.
PoE power supply is impossible.
Power is not supplied to a Powered Device.
If you use an STP cable, PoE power supply may not be possible depending on
the installation environment. In such cases, use a UTP cable.
Is a CAT5e or better straight cable (RJ45-8/8) used?
Is the cable connected to the port 1–24 that supports PoE power supply?
Ensure that either the port alone or the entire equipment is not overloaded.
Is the Powered Device connected to the port compliant with the IEEE802.3af
standardor IEEE802.3 at Type 1 (15.4W) standard?
Is the STATUS/ECO LED blinking orange?
If you use this Switching Hub outside the operating ambient temperature
range (high temperature), the protection function works and stops the PoE
power supply. In this condition, the STATUS/ECO LED blinks orange.
When the power supply mode LED is lit and a Port LED (left) is blinking
orange:
Ensure that the total power supply demand from PoE-powered devices does
not exceed 124 W.
When the power supply is suddenly shut off:
It is likely that a PoE-powered device in use has a different power consumption
in normal operation and standby states.
After turning on the PoE LED (power supply mode), confirm that a single port
is not overloaded [the Port LED (left) is not blinking orange] and that the
maximum limit of the total power supply is not exceeded (the PoE LIM. LED is
not blinking orange).
* For detailed configuration and management method, please see
the PDF version Operating Instructions in CD-ROM.