Panasonic GA-ML4TWPoE++ Owner's manual

Page 1 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
1. Summary
GA-ML4TWPoE++ is an Ethernet Switch with management function having 6 ports of 10/100/1000BASE-T
and SFP extension slot, one of which is selectable.
Ports 1 to 4 support IEEE802.3bt/at/af PoE power supply function.
2. Feature
（1）Ports 1 to 4 are 10/100/1000BASE-T ports corresponding to auto negotiation.
Also their speed and communication mode can be switched by configuration.
Ports 5 and 6 can be used as a 10/100/1000BASE-T port corresponding to auto negotiation or an SFP extension slot exclusively.
（2）Ports 1 to 4 can supply power conforming with IEEE802.3bt/at/af. Supplying power up to 95 W per port,
and up to 240 W in total is possible.
（3）Is equipped with PoE auto reboot function, and monitoring, and the switching of the power supply OFF/ON to ports is possible
via Ping, LLDP, and the 3 traffic volume methods.
（4）Is equipped with silent fan control functions, can be set to match the operating environment temperature and power supply,
and be used with any of the fan rpm, “High”, “Low” and “Min”.
（5）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 4 are set at MDI-X. (default))
（6）Telnet/SSH allows remote configuration changes and verifications of the Ethernet Switch.
Remotely configure the PoE settings for each port (Ports 1 to 4).
（7）The connection status for each port is detected by the power saving mode, and it can suppress the power consumption to required
volumes when not linked up. (Factory default: deactivated)
（8）Rapid Spanning Tree Protocol is supported, allowing to build a system with redundancy.
（9）The IEEE802.1p compatible QoS function is supported.
（10）Supports triple authentication that can simultaneously wait on IEEE802.1X authentication, MAC authentication, and
WEB authentication via one port, and an authentication network which is matched to the kinds of connection terminals can be
constructed.
（11）Equipped with step authentication functions, and can prevent illegal access of the terminals.
（12）Since it is equipped with authentication supplicant functions, a more robust security configuration can be configured in combination
with the upper switch’s IEEE802.1X authentication function.
（13）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.
（14）The PoE scheduler function enables scheduling of PoE power supply control.
（15）Supports ZEQUO assist Plus. Processes from introduction to maintenance can be performed easily.

Page 2 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
3－1. Power supply AC100-240V, 50/60Hz, 5.0A (with a built-in power supply)
3－2. Power consumption
3－3. Operating environment Temperature: 0 - 50℃
Humidity: 20 - 80%RH （no condensation）
(Please note) Please note that if the aforementioned conditions are not satisfied, then
that may cause fire, electrical shock, malfunctions or misoperations, which are not
covered by the warranty.
*If it is used beyond the operating environmental temperatures, then the protective
devices will start working and the Ethernet Switch power will be shut off.
*If the settings for the silent fan control functions are changed, then the upper limit for
the operating environmental temperatures may change.
For details, check “7-11. The Silent Fan Control Functions”.
3－4. Storage environment Temperature: -20 -70℃
Humidity: 10 - 90%RH （no condensation）
Normally, Max.291W （15.7W when not supplying power）, Min. 11.5W
3. Rated/Environmental Conditions
4－1. Form and materials/colors
4－2. Mass（Weight）2,300g
4. Form
Dimensions ：44mm（Height）×210mm（Width）×260mm（Depth）
（Excluding protruding sections）
Case material ：SECC
Color : Main unit: Green 03, Front face: Black 03,
Face plate label: Black 04
3－5. EMC compliance CISPR 32 Class A
EN 55032 Class A
AS/NZS CISPR32 Class A
VCCI Class A
EN 61000-3-2, EN 61000-3-3
EN 55024
IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5,
IEC 61000-4-6, IEC 61000-4-8, IEC 61000-4-11
* Electrical surges (lightning-induced surges in wiring): 10 kV
(Depending upon the twisted pair ports, and Panasonic’s proprietary evaluations)
3－6. Safety compliance IEC 62368-1
EN 62368-1
RoHS compliant3－7. Environment compliance

Page 3 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
5. Hardware Specifications
5－1. Interface Twisted pair port ：RJ45 connector (Port 1 to 4, (*1))
Transmitting and receiving network system：
IEEE802.3 10BASE-T
IEEE802.3u 100BASE-TX
IEEE802.3ab 1000BASE-T
Transmission speed ：10/100/1000Mbps, full/half duplex
Compatible cable ：Twisted pair cable
（At least equivalent to EIA/TIA568
category 5e）
Maximum transmission distance ：100m
Auto-Negotiation ：Communication speed and full/half duplex
are automatically recognized.
Setting can be fixed to 10Mbps or 100Mbps
and full duplex or half duplex.
PoE power supply function ：IEEE802.3bt/at/af
Up to 240W of power can be supplied to
ports 1 to 4 in total.
Up to 90W of power can be supplied per port
(factory default).
Up to 95W of power can be supplied per port
(*2)(*3)
PoE power supply method ：Alternative A
(Cable signal lines 1, 2, 3, and 6 are used.）
:Alternative A,B
(Cable signal lines 1 to 8 are used)
Twisted pair port ：RJ45 connector (Port 5 to 6, (*1))
Transmitting and receiving network system：
IEEE802.3 10BASE-T
IEEE802.3u 100BASE-TX
IEEE802.3ab 1000BASE-T
energy efficient Ethernet ：IEEE802.3az(LPI)
Transmission speed ：10/100/1000Mbps, full/half duplex
Compatible cable ：Twisted pair cable
（At least equivalent to EIA/TIA568
category 5e）
Maximum transmission distance ：100m
Auto-Negotiation ：Communication speed and full/half duplex
are automatically recognized.
Setting can be fixed to 10Mbps or 100Mbps
and full duplex or half duplex.
*1 Support two types of energy saving method :
1) Embedded power saving mode detects the connection status automatically
and saves power consumption to minimum.
2) 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.
These items are set to "Disabled" at factory default setting, and arrowed to be
changed by the setting for application
*2 This is enabled when the limit of power supply per port is set to 95W.
Power supply over 90W is available for only the Panasonic’s PDs
corresponding to PoE++.
*3 AWG24 and 65 Celsius degree or higher rated temperature cables are
recommended.

Page 4 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
5－3. Terminal emulator
connection
Console port ：RJ45 connector 1 port
Transmission mode ：RS-232C（ITU-TS V.24）
Emulation mode ：VT100
Communication configuration ：9,600bps, 8bit, None Parity control,
Stop bit 1 bit
5. Hardware Specifications
Switching method ：Store and Forward
Switching capacity ：12.0Gbps
Packet transfer capability ：Non-blocking
Max 1,488,000pps/port（1000Mbps）
Max 148,800pps/port（100Mbps）
Max 14,880pps/port（10Mbps）
MAC Address table ：Max 16K entry/unit
Automatic learning can be enabled/disabled
for each port. Fixed registration is enabled.
Buffer memory ：2.0M Bytes/unit
Flow control ：half-duplex Back pressure
full-duplex IEEE802.3x
Aging timeout ：10 to 1,000,000 sec. (Default: 300 sec.)
Jumbo frame supported ：9KB
Transmittable frames ：EAP,BPDU
5－2. Switching mode
SFP extension slot 5, 6
Transmitting and receiving network system：IEEE802.3z 1000BASE-X
* Select either of 1000BASE-T twisted pair port or SFP for use
SFF-8472（DMI：Diagnostic Monitoring Interface）
* Optional Accessories ：1000BASE-SX SFP Module(i) （PN54022-TH）
1000BASE-LX SFP Module(i) （PN54024-TH）
5－1. Interface

Page 5 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
（1）POWER （Power）LED
Green Light ：Power is ON
Off ：Power is OFF
（2）PoE LIM. （PoE limit）LED
For silent fan control high-speed (High) * For factory default, or low-speed (Low2)
Off : Supplying power in the range from 0 to 225 W.
Green Light : Supplying power in the range of 225 to 240W
Orange Blink : A single port's power supply is exceeding the upper limit, or
the total power supply of the Ethernet Switch is exceeding 240 W.
For silent fan control low-speed (Low1), or Min-speed (Min)
Off : Supplying power in the range from 0 to 165 W.
Green Light : Supplying power in the range from 165 to 180 W.
Orange Blink : A single port's power supply is exceeding the upper limit, or
the total power supply of the Ethernet Switch is exceeding 180 W.
（3）TEMP (Temperature sensor) LED
Green Light : The system is normally operating.
Orange Blink : The temperature exceeded the set threshold of the internal
temperature sensor.
Set threshold of the internal temperature sensor: 79℃
(factory default)
（4）FAN (Fan sensor) LED
Green Light : The system is normally operating.
Orange Blink : Fan failure
（5）STATUS/ECO （Status/ECO mode）LED
Green Light ：Operating in status mode.
Green Blink ：Operating in ECO mode.
All port LEDs are turned off.
Orange Light ：Starting.
Orange Blink ：Malfunction（Contact the seller）.
（6）GIGA (GIGA mode) LED
Green light : Operating in GIGA mode.
（7）Full LED (DUPLEX mode)
Green light : Operating in DUPLEX mode.
（8）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.
Off : No loop detection.
5. Hardware Specifications
5－4. LED display
Display of each port
is refer to table 1
of page 7 .

Page 6 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
5. Hardware Specifications
You can display the following items using the LED display change button.
Display for the connection with a connected terminal (Status mode),Display for
the 1000 Mbps transmission rate (GIGA 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).
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 change button
(for at least 3 sec).
When the Base mode is changed normally, all STATUS/ECO , GIGA 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, 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.
LED display change button
5－4. LED display
Press “LED DISPLAY CHANGE BUTTON” manually.
Automatically returns to Base mode after 1 minute.
Automatic
When Base mode is ECO mode
LED lamps for each mode and LED lamps for ports 1 to 6 correspond as the following.
（Table 1）
Switch Base mode（keep pressing “LED DISPLAY
CHANGE BUTTON” over 3 seconds）
Loop History
mode
ECO mode
（Base mode）
Boot
Status
mode
GIGA
mode
DUPLEX
mode
Status mode
(Base mode) GIGA mode
Boot
DUPLEX
mode
Loop History
mode
Switch two types of Base mode s and their LEDs in the following way:
When Base mode is Status mode （factory default setting）
Press “LED DISPLAY CHANGE BUTTON” manually.
Automatically returns to Base mode after 1 minute.
Automatic

Page 7 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
5. Hardware Specifications
LED（Left）
LED（Right）
Port 1-6 corresponding to the Auto MDI / MDI-X
(Allowed change by the setting for the application)
Ports 1-4 are set to "Disable" at factory default setting.
5－5. Cascade connections
5－4. LED display
5－6. FAN installed
PoE are being supplied power.
Single port overload.
Also, an overload of the Ethernet Switch
occurs, and the ports are displayed which
cannot be supplied power.
Power is not being supplied, or the PoE
receiving equipment are not connected.
also, it is set in the ECO mode.
Table 1
Display mode Behavior Description
STATUS/ECO
GIGA
FULL
LOOP
HISTORY
Link is established.
Transmitting and receiving data.
It is shut off via the loop detection and shut
off function/storm control or the BPDU guard
It is sending and receiving just the
control packet.
No device connected or the ECO mode is set.
Link is established at 1000 Mbps.
Link is established at 100 Mbps or 10 Mbps,
or no device is connected.
Link is established at full-duplex
Link is established at half-duplex or no device
is connected.
Loop has been detected within the
last 3 days.
No loop detection history.
Port
LED
Left
Right
Green Light
Green Blink
Orange Light
Orange Blink
Off
Green Light
Off
Green Light
Off
Green Light
Off
Green Light
Orange Blink
Off

Page 8 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
RFC1213-MIB（MIBⅡ） （RFC 1213) （*1）
BRIDGE-MIB （RFC 4188) （*2）
SNMPv2-MIB （RFC 1907）
RMON-MIB （RFC 2819）only etherStatsTable
SNMP-FRAMEWORK-MIB （RFC 2571）
SNMP-MPD-MIB （RFC 2572）
SNMP-NOTIFICATION-MIB （RFC 2573N）
SNMP-TARGET-MIB （RFC 2573T）
SNMP-USER-BASED-SM-MIB （RFC 2574）
SNMP-VIEW-BASED-ACM-MIB （RFC 2575）
SNMP-COMMUNITY-MIB （RFC 2576）
IP-MIB （RFC 4293）(*3）
IF-MIB （RFC 2863）excluding IfMIB
IEEE8021-PAE-MIB excluding dot1xPaeSupplicant
POWER-ETHERNET-MIB (RFC 3621) (*4)
*1 Excluding following items
At , ipRouteTable, icmp, egp
*2 Excluding following items
dot1dStp, dot1dSr, dot1dStatic
*3 Excluding following items
ipDefaultRouterTable, ipv6RouterAdvertTable
*4 Excluding following items
deelxSoppConfigTable, dotlxSuppStatusTable
6－5. Supported MIB
6. Software Specifications
6－6. System log Maximum number to be kept: 10,000
Transfers system logs to the Syslog server (IPv4/IPv6)
Control parameters can be set by the following procedures:
(1) Configuration from an asynchronous terminal connected to the console port.
(2) Configuration from a remote terminal connected via TELNET and SSH.
(3）It can be set from a remote terminal according to the Web screen.
Management protocol ：SNMP v1/v2c /v3 （RFC 1157, RFC 1901, RFC 3411,
RFC 3412, RFC 3413, RFC 3414,
RFC 3415, RFC 3416)
TELNET （RFC 854, RFC 855)
SSH v2 （RFC 4252, RFC 4253, RFC 4254,
RFC 4716, RFC4419）
Data transfer protocol ：TFTP （RFC 783, RFC 1350）
ZEQUO assist Plus can confirm the management/operation status of Ethernet Switch.
Ethernet Switch can be controlled by the following procedures:
(1) Control from an asynchronous terminal connected to the console port.
(2) Control from a remote terminal using SSH/TELNET and TCP/IP network
connection
(3) Control using SNMP Manager
The Ethernet Switcho peration status can be checked using the following functions.
(1) Internal temperature sensor function
(2) Function to display the CPU usage and memory usage
(3) SFP module status checking function (DDM: Digital Diagnostic Monitoring)
6－3. Rebooting
6－2. Ethernet Switch Control
6－4. Supported Agent
The system can be reset from the software in the following three modes:
(1) Warm start.
(2) Reset back to the factory default settings.
6－1. Configuration

Page 9 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
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 .During loop is occurring, or if loop has occurred within
the latest 3 days, LOOP HISTORY LED blinks to notify this.
• Loop detection setting
Enabled (factory default setting)
Enabled/disabled can be switched by configuring a setting using
the console.(*1)
*1 The setting is kept even when the power is turned OFF.
• Loop detection port
Enabled: Ports 1 to 4 (factory default setting)
Disabled: Ports 5 and 6 (factory default setting)
• Loop shutoff time
60 to 86,400 sec. (Factory default setting: 60 sec.)
The Set Time Port LED lights up orange and the port shuts off.
• Loop history retention time
3 days
The LOOP HISTORY LED blink for three days.
The Port LED also remains lit for three days after the loop is
eliminated.
Loop shutoff mode has the following 2 types of modes.
・Block mode (factory default setting)
When loops are detected, the port statuses are automatically
blocked, and just the specified packets which include the loop
detection packets will be transmitted and received.
・Shut-down mode
When loops are being detected, the ports will be automatically
linked down, and none of the packets will be transmitted and
received.(*2)
*2 Just the loop detection packets from 30 seconds before the
set restoration times will automatically be transmitted and received.
6－7. Loop detection
Syslog Client (Transfers system logs to the Syslog server.)
TFTP Client (Upgrades the software and saves/loads configuration information.)
SNTP Client
TELNET Client
DHCP Client
LLDP
LLDP-MED
DNS Resolver
DHCP Snooping
DDM
Statistics
sFlow
Ethernet OAM
CFM
UDLD (Scheduled to be supported)
6－8. Others
6. Software Specifications

Page 10 of 17
Model
Name
Model
No.
GA-ML4TWPoE++
PN260496-TH Product Specification 401-260496-TH-SP05
Date issued
Date revised
Jun. 29, 2021
Apr. 1,2022 Panasonic Electric Works Networks Co., Ltd.
7－1. Spanning Tree IEEE 802.1D Spanning Tree Protocol, Rapid Spanning Tree Protocol
IEEE 802.1Q Multiple Spanning Tree Protocol
BPDU guard
IEEE802.1Q
Private VLAN
MAC-based VLAN
Subnet based VLAN
Protocol-based VLAN
Number of VLAN registrations: 4,094 （including default）
Asymmetric VLAN
Voice VLAN （LLDP-MED）
Dynamic VLAN
Guest VLAN
Internet mansion function
7－2. VLAN
7－3. Link aggregation IEEE802.3ad Link Aggregation function （LACP/Manual)
Up to 3 groups can be created (up to 6 ports per group).
7－4. SPAN,RSPAN Subject port traffic can be copied and transmitted to designated ports
(multiple subject ports can be designated)
Remote switching packets can be monitored via RSPAN.
7－5. Port grouping Members of the port group can communicate only among member ports in
the same group. （Number of group registrations: 256）
7－6. QoS IEEE802.1p 8 levels of Priority Queue supported
Scheduling Method：
Strict Priority Queuing （SPQ：Strict priority queuing ）
Weighted Round Robin （WRR：Weighted round robin scheduling ）
Weighted Deficit Round Robin (WDRR：Weighted Deficit Round Robin scheduling)
7－7. Authentication Function IEEE802.1X Port-based authentication
Mac-based authentication using IEEE 802.1X
Dynamic VLAN function using IEEE 802.1X
Guest VLAN using IEEE 802.1X
（EAP-MD5/TLS/PEAP Authentication method）
IEEE802.1X supplicant
Force Authorized MAC Address Configuration
EAP Packet Forwarding function
(Enable/disable EAP transmission can be specified for each port.)
MAC authentication
WEB authentication
Triple authentication (*1)
Step authentication (*2)
*1 IEEE802.1X MAC-based/MAC/WEB authentication can be simultaneously
*2 2 authentications can be combined in phases
MAC-WEB authentication
MAC-802.1X authentication
802.1X-WEB authentication
7. Layer 2 Switching Functions
7－8. PoE power supply function IEEE802.3bt/at/af power supply function.
Up to 240 W of power can be supplied to ports 1 to 4 in total.
(Maximum power supplied to a port: 90 W (factory default))
(Maximum power supplied to a port: 95 W (*3)(*4))
Supply method：
IEEE802.3at/af:Alternative A（Cable signal lines 1, 2, 3, and 6 are used.）
IEEE802.3bt: Alternative A, B（Cable signal lines 1 to 8 are used.）
*3 This is enabled when the limit of power supply per port is set to 95W.
Power supply over 90W is available for only the Panasonic’s PDs
corresponding to PoE++.
*4 AWG24 and 65 Celsius degree or higher rated temperature cables are
recommended.