Panasonic Switch-M24eG PN28240K-TH User manual

 Thank you for purchasing our product.
 This manual provides important information about safe and proper
operations of this Switching Hub.
 Please read the "Important Safety Instructions" on pages 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-M24eG
Installation Guide
Model No. PN28240K-TH
PN28240K-MY
PN28240K-ID
PN28240K-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
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
15
16
18

3
This chapter contains important safety instructions for preventing bodily
injury and/or property damage. You are required to follow them.
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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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

4
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, console ports,
or SFP extension slots.
Deviation could lead to fire, electrical shock, and/or equipment failure.
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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.
CAUTION
WARNING
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.
Do not insert any other modules except for the our optional SFP module
(PN54021K/PN54023K) to the SFP extension slots.
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.

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CAUTION
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.
5

Basic Instructions for the Use of This Product
For inspection and/or repair, consult the shop.
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, or the metal terminal of the SFP extension slot. 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 place where ambient temperature is from 0 to 50°C.
Failure to meet the above conditions may result in fire, electric shock, breakdown, and/or
malfunction. Please take notice because such cases are out of guarantee.
Additionally, do not cover the bent hole of this Switching Hub.
Deviation could lead to high internal temperature, equipment failure and/or malfunction.
When stacking Switching Hubs, leave a minimum of 20 mm space between them.
If any module other than the optional SFP extension modules(PN54021K/PN54023K) is
inserted into the SFP extension slot,operation is not guaranteed.For the latest information
about compatible SFP extension modules,check our website.
2. The contents described in this document may be changed without prior notice.
3. For any question, please contact the shop where you purchased the product.
6
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.

Product Outline
Switch-M24eG is an all Giga bit Ethernet Switching Hub with management function
having 22 ports of 10/100/1000BASE-T and two pairs of 10/100/1000BASE-T port and
SFP extension slot, one of which is selectable.
1.1 Features
1
Has wire-speed Layer 2 switching function.
Ports 1 to 22 are 10/100/1000BASE-T ports corresponding to autonegotiation.
Also their speed and communication mode can be switched by configuration.
Ports 23 and 24 can be used as a 10/100/1000BASE-T port corresponding to
autonegotiation or an SFP extension slot exclusively.
Also their speed and communication mode can be switched by configuration.
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 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.
Fanless design solves noise problem or fan failure.
Due to the ECO mode LED function,Port LED lamps (left) can be turned off to
reduce power consumption.
The IEEE802.1p compatible QoS function is supported.
Has an internet mansion function,which ensures security between each port.
Due to the loop detection/shutoff function,a port where loop has occurred can be
automatically shut off to prevent loop failures.When a port is shut off and recovered
automatically,SNMP trap can be sent to notify the incident to the administrator.
Moreover,the port with a loop can be identified by loop notification on the LEDs on
the main unit and referring the history of loop on the setting screen.
Has a port grouping function, which groups ports that are allowed to communicate
with one another to limit communications between different groups.
with one another to limit communications between different groups.
Equipped with energy efficient Ethernet (EEE) conforming to IEEE802.3az
(LPI).When there is no data transmission at link up,the energy-saving state
automatically starts so that power consumption can be reduced on each port.
Using Embedded power-saving mode,connection status is automatically detected
and power consumption is minimized.
Supports IEEE802.1Q tagging VLAN.Up to 256 groups of VLAN can be registered.
Supports IEEE802.1X user authentication function (EAP-MD5/TLS/PEAP).
Supports ZEQUO assist Plus.Processes from introduction to maintenance can be
performed easily.
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7

1.2 Specifications
8
Product Outline
1
Port grouping Communication control is available only for ports in the same group.
(Up to 256 groups can be registered.)
SNMP v1/v2c/v3,Telnet,SSH (v2),WEB,Console
Other
Link aggregation
Interface
Switching mode Store and Forward method: Forwarding rate
10BASE-T: Max. 14,880 pps/port
100BASE-TX: Max. 148,800 pps/port
1000BASE-T/SFP: Max. 1,488,000 pps/port
MAC Address table: Max. 8K entry/unit
Buffer: 512K byte/unit
EAP frame,BPDU frame transmission
IEEE802.3ad Link aggregation function (STATIC)
Configurable up to 8 groups (Max. 8 ports per group)
VLAN IEEE802.1Q tagging VLAN (256 groups max.)
Port based VLAN, Internet mansion function
QoS
Port monitoring
Management method
1:n
Loop detection Ports 1-22: ON, Ports 23-24: OFF (default setting)
Port shut-off time: 60 -86400 sec (default setting is 60 sec)
Port history hold time: 3 days
Power supply AC 100-240 V, 50/60 Hz, 0.5 A
Power consumption Normally, Max. 16.6 W, Min. 7.2 W
Storage environment
Mass (Weight)
External dimensions 44 mm (Height) × 330 mm (Width) × 230 mm (Depth) (Excluding
protruding sections)
Operating environment
Supports the IEEE802.1X authenticaton (port-based authentication).
Storm control function,multi-cast address group registration
function,DDM function,access control function,IPv4/IPv6 supported
IEEE802.1p compatible, Supports 4 priority queues
Temperature: 0–50°C, Humidity: 20–80% RH (no condensation)
(Warning) Failure to satisfy the conditions above may result in a
fire,electric shock,equipment failure,and/or malfunction.
Such events are not covered by the warranty.
Temperature: -20–70°C, Humidity: 10–90% RH (no condensation)
＊For detailed specifications,refer to the product’ s specifications.
Twisted pair port 1-24:RJ45 connecter
Transmitting and receiving network system
IEEE 802.3 10BASE-T
IEEE 802.3u 100BASE-TX
IEEE 802.3ab 1000BASE-T
Energy Efficient Ethernet function
IEEE 802.3az(LPI)
SFP extension slot port23,34
Transmitting and receiving network system
IEEE 802.3z
※RJ45 or SFP either exclusive use
SFF-8472 (DMI:Diagnostic Monitoring Interface)
Console port:RJ45 connecter
RS-232C(ITU-TS V.24)
2,300g

1.3 Accessories
9
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2)kcarhcni-91rof(tekcarbgnitnuoM
4)kcarhcni-91rof(wercS
Rubber foot 4
1drocrewoP
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, PWR 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, PWR LED (Power) and STATUS/ECO LED
(Status/ECO mode) light in green, and the Switching Hub starts operation as a
Switching Hub.
When this Switching Hub successfully communicates with a terminal connected to a
port, the Port LED lights up.
When the terminal is not operating normally, for example when power is not
supplied to the terminal, the Port LED does not light up.
When the Eco mode is set,Port LED lamps do not light up.
Quantity
For configuration and management method, please see the PDF version
Operating Instructions in CD-ROM.

Screw (for fixing the main unit and the 19 inch rack mount bracket) 8
[Optional accessories]
PN54021K-XX 1000BASE-SX SFP Module
PN54023K-XX 1000BASE-LX SFP Module
* Just the PN28240K-TH has 1 Installation Guide in Thai (a total of 2 guides).
[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
PN28240K-TH
PN28240K-ID
PN28240K-MY
PN28240K-SG
Power Cord Rating FUSE Rated Current Plug Type
The XXs are identical to the intended nation of delivery codes.

Enlarged view on the next page
Explanation label
SFP▲
SFP▼
23
24
21
19
17
1513
11
9
22
201816
1412
10
753
1
86
42
RIGHT LED(ORANGE):LOOP DETECTION
CONSOLE
9600.N.8.1(DTE)
ANY COL.
POWER
STATUS/ECO
GIGA
100M
FULL
LOOP HISTORY
Switch-M24eG
LED DISPLAY
CHANGE BUTTON
KEEP PRESSING 3SEC
ECO MODE ON/OFF
10/100/1000BASE-T port
Part Names and Functions
10
2
Console port
LED display change button
lebalsserddACAMtroprewoP
lebalrebmunlaireSlanimretdnuorG
Back panel
Front panel
SFP extension slot
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 1–22)
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.
10/100/1000BASE-T port + SFP extension slot (ports 23,24)
Install SFP extension module here. (It becomes exclusive usage with twisted pair
port.)
When SFP extension slot is linked, the port is automatically switched to SFP
extension mode.
SFP port supports only the full duplex communication.
Console port
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
Power cord hook block

Power LED
Collision LED
Status/ECO mode LED
GIGA mode LED
Speed modeLED
DUPLEX mode LED
Loop History mode LED
11
POWER (Power) LED
Green Light : Power is ON.
Off : Power is OFF.
ANY/COL. (Collision) LED
Orange Light : During half-duplex operation, packet collision is occurring in either
port.
STATUS/ECO (Status/ECO mode) LED
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 shop.)
Off : Power is OFF.
GIGA (GIGA mode) LED
Green Light : Operating in GIGA mode.
100M (Speed mode) LED
Green Light : Operating in Speed mode.
FULL (DUPLEX mode) LED
Green Light : Operating in DUPLEX mode.
LOOP HISTORY (Loop History mode) LED
Green Light : Operating in Loop History mode.
Green Blink : Loop is occurring, or occurred within the last 3 days.
LED display change
button

12
Port LED
Left
Right
Port LED (Left)
Port LED (Right)
Display mode
STATUS/ECO
Behavior Description
Green Light Link is established.
Green Blink Transmitting and receiving data.
Off No device connected.
Table1. Ports and Port LED lamps 1 to 24 correspond as shown below.
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.
SFP▲
SFP▼
23
24
21
19
17
1513
11
9
22
201816
1412
10
7
5
3
1
86
42
RIGHT LED(ORANGE):LOOP DETECTION
Part Names and Functions
2

2.1 LED display change
●Display style set by the LED display change button
13
You can display the following items using the LED display switch button.
Display for the connection with a connected terminal (Status mode),Display for
the 1000 Mbps transmission rate (GIGA mode),Display for the 100Mbps or 10
Mbps transmission rate (Speed mode),Display for the full-duplex or half-duplex
transmission system (DUPLEX mode),Display for ports with a loop history (Loop
history mode),All port LED lamps can be turned OFF (ECO mode).
●Two types of Base modes and each mode
The mode at the start is called “Base mode.”
There are two types of Base modes:Status mode (factory default setting) and ECO
mode.You can change the Base mode by holding down the LED display switch
button (for at least 3 sec).
When the Base mode is changed normally,all STATUS/ECO,GIGA,100M,and FULL
LED lamps light up at the same time.When you release the button,the Base mode is
changed to the selected mode.
If the mode is changed to the GIGA mode,Speed mode,DUPLEX mode,or loop
history mode and the LED display switch button is not used for one minute or
longer,the mode automatically returns to a Base mode (Status mode or ECO mode)
.The Base mode is maintained even after the power is turned OFF.
SFP▲
SFP▼
23
24
21
19
17
1513
11
9
22
201816
1412
10
7
5
3
1
86
42
RIGHT LED(ORANGE):LOOP DETECTION
CONSOLE
9600.N.8.1(DTE)
ANY COL.
POWER
STATUS/ECO
GIGA
100M
FULL
LOOP HISTORY
Switch-M24eG
LED DISPLAY
CHANGE BUTTON
KEEP PRESSING 3SEC
ECO MODE ON/OFF
Indication on the front panel and
LED lamps
LED display switch button

14
Switch two types of Base modes and their LEDs in the following way:
When Base mode is Status mode (factory default setting)
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
●Loop detection/shutoff function and loop history function
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.
Press "LED DISPLAY CHANGE BUTTON" manually.
Automatic
Automatically returns to Base mode after 1 minute.
Boot
ECO mode
(Base mode)
Status
mode
GIGA
mode
Speed
mode
DUPLEX
mode
Loop history
mode
※The Base mode is maintained even after the power is turned OFF.
LED lamps for each mode and LED lamps for ports 1 to 24 correspond as shown in Table 1 (see page 10).
Part Names and Functions
2

Installation and Configuration
15
3
Take out the provided mount brackets (2pcs.)and eight screws (for fixing the mount
brackets and the Switching Hub).Fix the mount brackets to the four holes on each
side of the Switching Hub using the screws.
Then,securely install the Switching Hub on the rack using the four provided screws
(for mounting on a 19-inch rack) or screws provided with the rack.
3.1 Mounting to rack

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.
16
Installation and Configuration
3

17
2neercS1neercS
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
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.
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.
Is the correct Port LED display mode selected using the LED display switch
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 proper communication mode signal cannot be obtained, apply
half-duplex mode.
Please reconfirm autonegotiation setting.
Do not set forced full-duplex for the equipment that the Switching Hub is
connected to.
Is not the utilization ratio of the network to which this Switching Hub is
connected too high?
Please try to separate the equipment from the network.
If communication is disabled
Are the equipment linked up?
If Embedded power-saving mode is set to “Full” ,change it to “Half” or
“Disabled” .
Is any Port LED lamp (right) lit in orange?
If a Port LED lamp (right) is lit in orange,the respective port is shut off by the
loop detection/shutoff function. Cancel loop connection under the port and
then wait for the period set for the recovery time for automatic recovery for
loop detection/shutoff or cancel port shutoff from the setting screen.
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