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MAC Filtering 
By filtering MAC address, the switch can ea sily filter the pre-configured MAC address 
and reduce the un-safety. You can add  and delete filtering MAC address. 
Figure 5-69:  MAC Filtering interface 
 
This page includes the following fields: 
 
Object Description 
MAC Address:  Enter the MAC address that you want to filter. 
 
All MAC Addresses 
You can view all of the MAC addresses learned by the selected port. 
•  Select the port number. 
•  The selected port of static & dynamic  MAC address information will be displayed 
in here. 
•  Click  CLEAR MAC TABLE  to clear the dynamic MAC addr esses information of the 
current port shown on the screen. 
  
						

							
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Figure 5-70:  All MAC Address interface 
 
Multicast Filtering 
Multicasts are similar to broadcasts, they are sent to all end stations on a LAN or 
VLAN. Multicast filtering is  the function, which end stations can receive the multicast 
traffic if the connected ports had been includ ed in the specific multicast groups. With 
multicast filtering, network devices only forw ard multicast traffic to the ports that are 
connected to the registered end stations. 
Figure 5-71:  Multicast Filtering interface 
 
This page includes the following fields: 
 
Object Description 
IP Address:  Assign a multicast group IP addr
ess in the range of 224.0.0.0 ~ 
239.255.255.255. 
Member Ports:  Tick the check box beside the port number to include them as the 
member ports in the specific multicast group IP address.  
						

							
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Digital Input/Output (GE-DSH-73) 
The 7 10/100TX + 3 10/100/1000T/100/1000 SFP Combo w/ X-Ring L2 Managed \
Industrial Switch contains two digital inputs and two digital outputs. The digital inputs 
may be used to receive the voltage-chang ing signal of the remote equipment to 
sense the state of the remote equipment  like heater, pump, and other electrical 
equipment. Therefore the switch can be co nfigured to send system log, SMTP and 
SNMP traps to syslog server, SMTP server  and SNMP trap station respectively (please 
refer to System Event Log and SNMP configuration section). Outputs are open-
collector transistor switches used to conne ct to the external device like alarm buzzer 
or LED to inform the user  of the port/power status. 
Digital Input 
• When First/Second Digital Input function  is enabled, First Digital Input/Second 
Digital Input will then be available respectively. 
•  Digital Input: Choose the transiti on type to trigger DI0/DI1. 
o  Low-->High: Having focused this radio  button, DI0/DI1 will only report the 
status when the external devices  voltage changes from low to high. 
o  High-->Low: Having focused this radio  button, DI0/DI1 will only report the 
status when the external devices  voltage changes from high to low. 
•  Event description: Please fill in the description for the event. 
•  Action: Tick the check boxes to decide  whether or not to send the events via 
Syslog, SMTP, or SNMP Trap. 
Figure 5-72:  Digital Input interface 
 
Digital Output 
•  When First/Second Digital Output function  is enabled, First Digital Output/Second 
Digital Output will then be available respectively.  
						

							
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• Condition: The system will send an electric al Low-to-High or High-to-Low signal to 
First Digital Output (DO0)/Second Digita l Output (DO1) when the condition of 
ticked checkbox is met. 
o  Port Fail: Having ticked this checkbox , DO0/DO1 will output an electrical Low-
to-High or High-to-Low signal  when port failure occurs. 
o  Power Fail: Having ticked this checkb ox, DO0/DO1 will output an electrical 
Low-to-High or High-to-Low signal when power failure occurs. 
•  Action: Choose the output ty pe of electrical signal. 
o  Low-->High: Having focused this ra dio button, DO0/DO1 will output an 
electrical signal of Low-to-High when th e condition of the ticked checkbox is 
met (port/power failure occurs). 
o  High-->Low: Having focused this ra dio button, DO0/DO1 will output an 
electrical signal of Low-to-High when th e condition of the ticked checkbox is 
met (port/power failure occurs). 
Figure 5-73:  Digital Output interface 
 
NOTE:  Besides ticking the checkboxes in the Co ndition column field, the power/port 
failure checkboxes of Fault Relay Alarm ha ve to be ticked as the precondition. 
 
NOTE: Please refer to Fault Relay Alarm section. Also, please notice that the digital 
output cant connect to the external de vice using power higher than 40V/200mA.  
						

							
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Power Over Ethernet (GE-DSH-82-PoE) 
Providing up to 8 PoE, in-line power inte rface, the GE-DSH-82-PoE Industrial PoE 
Switch can easily build a power central- controlled IP phone system, IP Camera 
system, AP group for the enterprise. For  instance, 8 camera / AP can be easily 
installed around the corner in the com pany for surveillance demands or build a 
wireless roaming environment in the office.  Without the power-socket limitation, the 
PoE Switch makes the installation of cameras  or WLAN AP more easily and efficiently. 
NOTE:  PoE functionality requires the use of the recommended a power source. 
This product is intended to be supplied  by a UL Listed Direct Plug-In Power Unit 
marked Class 2 or LPS and outp ut rated 48 VDC, 380 mA minimum. 
Power over Ethernet Powered Device 
 
 
3~5 watts  Voice over IP phones 
Enterprise can install POE VoIP Phone, ATA and other Ethernet/non-
Ethernet end-devices to the central where UPS is installed for un-interrupt 
power system and power control system. 
 
6~12 watts  Wireless LAN Access Points 
Museum, Sightseeing, Airport, Hotel, Campus, Factory, Warehouse can 
install the Access Point any wh
ere with no hesitation 
 
 
10~12 watts  IP Surveillance 
Enterprise, Museum, Campus, Hospital, Bank, can install IP Camera 
without limits of install location – no need electrician to install AC sockets. 
 
3~12 watts  PoE Splitter 
PoE Splitter split the PoE 48V DC over the Ethernet cable into 5/9/12V DC 
power output. It frees the device deployment from restrictions due to 
power outlet locations, which eliminate the costs for additional AC wiring 
and reduces the installation time. 
  
						

							
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Power Management 
In a power over Ethernet system, operating power is applied from a power source 
(PSU-power supply unit) over the LAN infrastr ucture to powered devices (PDs), which 
are connected to ports. Under some condit ions, the total output power required by 
PDs can exceed the maximum available powe r provided by the PSU. The system may 
a prior be planed with a PSU capable of su pplying less power than the total potential 
power consumption of all th e PoE ports in the system. In order to maintain the 
majority of ports active, powe r management is implemented. 
The PSU input power consumption is moni tored by measuring voltage and current. 
The input power consumption is equal  to the systems aggregated power 
consumption. The power management concep t allows all ports to be active and 
activates additional ports,  as long as the aggregated po wer of the system is lower 
than the power level at which additional PD s cannot be connected. When this value is 
exceeded, ports will be deactivated, accord ing to user-defined priorities. The power 
budget is managed according to the follo wing user-definable parameters: maximum 
available power, ports priority,  maximum allowable power per port. 
This section provides PoE (Power over Ethe rnet) Configuration and PoE output status 
of PoE Switch as shown in Figure 5-74. 
Figure 5-74:  PoE power configuration interface and status 
  
						

							
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This page includes the following fields: 
 
Object Description 
Maximum Power Available  Displays the maximum power supply in Watt. 
Actual Power Consumption  This column shows the real-time total power consumption. 
System Power Limit  User can modify the value to this column field to limit the total output  power for the system. 
Main Supply Voltage  This column shows the ou tput voltage of the system for PoE ports. 
Firmware Version  This column shows the PoE chip’s firmware version. 
Port Knockoff Disabled  Power Management state where one or more PDs have been powered 
down so that a higher priority PD may be powered up and yet not 
exceed the maximum total power available for PDs. 
AC Disconnect  Tick this checkbox to monitor the AC impedance on the port terminals and removes power when the impedance rises above a certain value, for
 
a certain period (for details, see the IEEE 802.3af specification). 
Capacitive Detection  If the port and capacitive  detection are enabled, the capacitances state 
reads in the voltage result from the constant current. This is then 
subtracted from the pre-capacitance voltage to get a charge rate. If this 
charge rate is within the window of the PD signatures, the device is 
considered to be discovered. 
Start  Showing with a tick symbol, the system initializes and resets  successfully. 
Port  The index of PoE ports. 
Enable State  Check it to enable the PoE function to the port. 
Power Limit From 
Classification Check it to decide the power limit method. 
When this check box is ticked, the system will limit the power supply to 
the powered device in accordance with the related class. 
Legacy  Check it to support the legacy power devices. 
Priority  Pull down the selection menu item to choose the priority of power 
supplying. 
Critical 
High 
Low 
High priority is “Critical”. 
Port Limit (
						

							
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Object Description 
Determined Class  Displays the PD’s class.  Class 0 is the default for PDs. However, to improve power management 
at the PSE, the PD may opt to provide a signature for Class 1 to 3. 
The PD is classified based on power. The classification of the PD is the 
maximum power that the PD will draw across all input voltages and 
operational modes. A PD shall return Class 0 to 3 in accordance with the 
maximum power draw as specified by Table 5-12-1. 
 
And then, click APPLY to carry into effect. 
 
•  PD Classifications 
A PD may be classified by the PSE based on  the classification information provided by 
the PD. The intent of PD classification is  to provide information about the maximum 
power required by the PD during operation.  Class 0 is the default for PDs. However, to 
improve power management at the PSE, the  PD may opt to provide a signature for 
Class 1 to 3. 
The PD is classified based on power. The  classification of the PD is the maximum 
power that the PD will draw across a ll input voltages and operational modes. 
A PD shall return Class 0 to 3 in acco rdance with the maximum power draw as 
specified by Table 5-3. 
Table 5-3: Device class 
 
Class Usage Range of maximum power used by the PD 
0  Default  0.44 to 12.95 Watts 
1  Optional  0.44 to 3.84 Watts 
2  Optional  3.84 to 6.49 Watts 
3  Optional  6.49 to 12.95 Watts 
4  Not Allowed  Reserved for Future Use 
Class 4 is defined but is reserved for fu ture use. A Class 4 signature cannot be 
provided by a compliant PD.  
						

							
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Factory Default 
Reset switch to default configuration. Click  to reset all configurations to the default 
value. 
Figure 5-75:  Factory Default interface 
 
Save Configuration 
Save all configurations that you have  made in the system. To ensure the all 
configuration will be saved. Click  SAVE to save the all config uration information to 
flash memory. 
Figure 5-76:  Save Configuration interface 
  
						

							
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System Reboot  
Reboots the switch with a software reset. Click REBOOT to reboot the system. 
Figure 5-77:  System Reboot interface