Ethernet Direct Husky HMG-838PT User manual

HMG-838PT
HMG-838EPT
Industrial 8 x 10/100Base-T(X) + 3 x
100/1000Base SFP Gigabit Managed
Ethernet Switch
User’s Manual
(Web Configuration)
V1.3
11-06-2017

Husky Series Industrial Ethernet Switch Solutions
HMG-838PT & HMG-838EPT Industrial Gigabit Managed Ethernet Switch
User’s Manual (Web Configuration)
Copyright Notice
Copyright © 2017 Ethernet Direct Corp.
All rights reserved.
Reproduction in any form or by any means without Ethernet Direct prior written permission is prohibited.

Table of Contents
Chapter 1 Web Configuration Home ................................................................................................................................................1
1-1 Entering Web Configuration..............................................................................................................................................1
1-2 Port State..........................................................................................................................................................................1
1-3 Refresh .............................................................................................................................................................................2
1-4 Save .................................................................................................................................................................................2
1-5 Help ..................................................................................................................................................................................2
1-6 Logout...............................................................................................................................................................................2
Chapter 2 System ..............................................................................................................................................................................1
2-1 System Information Configuration.....................................................................................................................................1
2-2 System Information...........................................................................................................................................................1
2-3 System IP .........................................................................................................................................................................2
2-4 System IP Status ..............................................................................................................................................................3
2-5 System NTP......................................................................................................................................................................4
2-6 System Time .....................................................................................................................................................................5
2-7 System Log.......................................................................................................................................................................5
2-8 Detailed Log......................................................................................................................................................................6
2-9 System CPU Load ............................................................................................................................................................6
2-10 System SMTP...................................................................................................................................................................7
Chapter 3 Green Ethernet .................................................................................................................................................................1
3-1 Green Ethernet LED .........................................................................................................................................................1
3-2 Green Ethernet Configuration ...........................................................................................................................................1
3-3 Green Ethernet Status ......................................................................................................................................................3
Chapter 4 Ports ..................................................................................................................................................................................1
4-1 Ports Configuration ...........................................................................................................................................................1
4-2 Ports State ........................................................................................................................................................................2
4-3 Ports Traffic Overview.......................................................................................................................................................3
4-4 Ports QoS Statistics ..........................................................................................................................................................3
4-5 Ports QCLStatus ..............................................................................................................................................................4
4-6 Ports Detailed Statistics ....................................................................................................................................................4
4-7 UTP Cable Diagnostics.....................................................................................................................................................6
4-8 Ports SFP .........................................................................................................................................................................7
Chapter 5 Security .............................................................................................................................................................................1
5-1 Switch ...............................................................................................................................................................................1
5-1.1 User....................................................................................................................................................................1
5-1.2 Privilege Levels ..................................................................................................................................................2
5-1.3 Auth Method .......................................................................................................................................................3
5-1.4 SSH ....................................................................................................................................................................3
5-1.5 HTTPS................................................................................................................................................................4
5-1.6 Access Management ..........................................................................................................................................5
5-1.6.1 Access Management Configuration....................................................................................................................5
5-1.6.2 Access Management Statistics ...........................................................................................................................5
5-1.7 SNMP .................................................................................................................................................................6
5-1.7.1 SNMP System Configuration ..............................................................................................................................6
5-1.7.2 Alarm Configuration............................................................................................................................................6
5-1.7.3 SNMPv3 Community Configuration ....................................................................................................................9
5-1.7.4 SNMPv3 User Configuration ............................................................................................................................10
5-1.7.5 SNMPv3 Group Configuration ..........................................................................................................................11

5-1.7.6 SNMPv3 View Configuration ............................................................................................................................11
5-1.7.7 SNMPv3 Access Configuration.........................................................................................................................12
5-1.8 RMON ..............................................................................................................................................................13
5-1.8.1 RMON Statistics Configuration .........................................................................................................................13
5-1.8.2 RMON History Configuration ............................................................................................................................13
5-1.8.3 RMON Alarm Configuration ..............................................................................................................................13
5-1.8.4 RMON Event Configuration ..............................................................................................................................14
5-1.8.5 RMON Statistics Overview ...............................................................................................................................15
5-1.8.6 RMON History Overview ..................................................................................................................................16
5-1.8.7 RMON Alarm Overview ....................................................................................................................................16
5-1.8.8 RMON Event Overview ....................................................................................................................................17
5-2 Network ..........................................................................................................................................................................17
5-2.1 Port Security.....................................................................................................................................................17
5-2.1.1 Limit Control .....................................................................................................................................................17
5-2.1.2 Switch Status....................................................................................................................................................19
5-2.1.3 Port Status........................................................................................................................................................20
5-2.1.4 Link Detection...................................................................................................................................................20
5-2.2 NAS ..................................................................................................................................................................22
5-2.2.1 Configuration ....................................................................................................................................................22
5-2.2.2 Switch Status....................................................................................................................................................25
5-2.2.3 Port Statistics....................................................................................................................................................26
5-2.3 ACL ..................................................................................................................................................................26
5-2.3.1 Ports .................................................................................................................................................................27
5-2.3.2 Rate Limiters ....................................................................................................................................................28
5-2.3.3 Access Control List...........................................................................................................................................28
5-2.3.4 ACLStatus........................................................................................................................................................32
5-2.4 DHCP ...............................................................................................................................................................33
5-2.4.1 DHCP Server Statistics.....................................................................................................................................33
5-2.4.2 DHCP Server Binding IP ..................................................................................................................................34
5-2.4.3 DHCP Server Declined IP ................................................................................................................................34
5-2.4.4 DHCP Server Mode Configuration....................................................................................................................35
5-2.4.5 DHCP Server Excluded IP Configuration..........................................................................................................35
5-2.4.6 DHCP Server Pool Configuration .....................................................................................................................36
5-2.4.7 Snooping Configuration ....................................................................................................................................38
5-2.4.8 Snooping Table.................................................................................................................................................39
5-2.4.9 Relay Configuration ..........................................................................................................................................39
5-2.4.10 RelayStatistics .................................................................................................................................................39
5-2.5 IP Source Guard...............................................................................................................................................40
5-2.5.1 IP Source Guard Configuration.........................................................................................................................40
5-2.5.2 Static Table .......................................................................................................................................................41
5-2.5.3 Dynamic Table ..................................................................................................................................................42
5-2.6 ARP Inspection.................................................................................................................................................42
5-2.6.1 Port Configuration.............................................................................................................................................42
5-2.6.2 VLAN Mode Configuration................................................................................................................................43
5-2.6.3 Static Table .......................................................................................................................................................44
5-2.6.4 Dynamic Table Status .......................................................................................................................................44
5-3 RADIUS ..........................................................................................................................................................................44
5-3.1 Configuration....................................................................................................................................................45

5-3.2 RADIUS Overview............................................................................................................................................46
5-3.3 RADIUS Details ................................................................................................................................................46
5-4 TACACS+ .......................................................................................................................................................................49
Chapter 6 Aggregation ......................................................................................................................................................................1
6-1 Static.................................................................................................................................................................................1
6-2 LACP ................................................................................................................................................................................2
6-2.1 Port Configuration...............................................................................................................................................2
6-2.2 System Status ....................................................................................................................................................3
6-2.3 Port Status..........................................................................................................................................................3
6-2.4 Port Statistics......................................................................................................................................................4
Chapter 7 Redundancy......................................................................................................................................................................1
7-1 Direct-Ring........................................................................................................................................................................1
7-1.1 Configuration......................................................................................................................................................1
7-1.2 Status .................................................................................................................................................................5
7-2 Loop Protection.................................................................................................................................................................5
7-2.1 Configuration......................................................................................................................................................6
7-2.2 Status .................................................................................................................................................................6
7-3 Spanning Tree...................................................................................................................................................................7
7-3.1 Bridge Settings ...................................................................................................................................................7
7-3.2 MSTI Mapping ....................................................................................................................................................9
7-3.3 MSTI Priorities..................................................................................................................................................10
7-3.4 CIST Ports........................................................................................................................................................10
7-3.5 MSTI Ports .......................................................................................................................................................12
7-3.6 Bridge Status ....................................................................................................................................................12
7-3.7 Port Status........................................................................................................................................................14
7-3.8 Port Statistics....................................................................................................................................................14
7-4 MEP................................................................................................................................................................................15
7-5 ERPS (ITU-T G.8032) .....................................................................................................................................................22
Chapter 8 IPMC Profile ......................................................................................................................................................................1
8-1 Profile Table ......................................................................................................................................................................1
8-2 Address Entry ...................................................................................................................................................................2
Chapter 9 MVR ...................................................................................................................................................................................1
9-1 Configuration....................................................................................................................................................................1
9-2 MVR Statistics...................................................................................................................................................................2
9-3 MVR Channel Groups.......................................................................................................................................................3
9-4 MVR SFM Information ......................................................................................................................................................3
Chapter 10 IPMC ................................................................................................................................................................................1
10-1 IGMP Snooping ................................................................................................................................................................1
10-1.1 Basic Configuration ............................................................................................................................................1
10-1.2 VLAN Configuration............................................................................................................................................3
10-1.3 Port Filtering Profile ............................................................................................................................................4
10-1.4 Status .................................................................................................................................................................4
10-1.5 Groups Information.............................................................................................................................................5
10-1.6 IPv4 SFM Information.........................................................................................................................................5
10-2 MLD Snooping ..................................................................................................................................................................6
10-2.1 Basic Configuration ............................................................................................................................................6
10-2.2 VLAN Configuration............................................................................................................................................7
10-2.3 Port Filtering Profile ............................................................................................................................................8
10-2.4 Status .................................................................................................................................................................8

10-2.5 Groups Information.............................................................................................................................................9
10-2.6 IPv6 SFM Information.......................................................................................................................................10
Chapter 11 LLDP ................................................................................................................................................................................1
11-1 Configuration ....................................................................................................................................................................1
11-2 LLDP-MED........................................................................................................................................................................3
11-3 Neighbors .........................................................................................................................................................................5
11-4 LLDP-MED Neighbors ......................................................................................................................................................5
11-5 LLDPEEE.........................................................................................................................................................................5
11-6 LLDP Global Counters ......................................................................................................................................................6
Chapter 12 MAC Table .......................................................................................................................................................................1
12-1 Configuration....................................................................................................................................................................1
12-2 MAC Address Table ..........................................................................................................................................................2
Chapter 13 VLAN Translation ...........................................................................................................................................................1
13-1 Port to Group Mapping .....................................................................................................................................................1
13-2 VID Translation Mapping ..................................................................................................................................................1
Chapter 14 VLANs .............................................................................................................................................................................1
14-1 Configuration ....................................................................................................................................................................1
14-2 Membership ......................................................................................................................................................................4
14-3 Ports .................................................................................................................................................................................4
Chapter 15 Private VLANs.................................................................................................................................................................1
15-1 PVLAN Membership .........................................................................................................................................................1
15-2 Port Isolation.....................................................................................................................................................................1
Chapter 16 GVRP ...............................................................................................................................................................................1
16-1 Global Configuration .........................................................................................................................................................1
16-2 Port Configuration.............................................................................................................................................................2
Chapter 17 VCL ..................................................................................................................................................................................1
17-1 MAC-based.......................................................................................................................................................................1
17-1.1 Membership Configuration .................................................................................................................................1
17-1.2 Membership Status.............................................................................................................................................1
17-2 Protocol-based VLAN .......................................................................................................................................................2
17-2.1 Protocol to Group ...............................................................................................................................................2
17-2.2 Group to VLAN ...................................................................................................................................................3
17-3 IP Subnet-based VLAN.....................................................................................................................................................3
Chapter 18 QoS..................................................................................................................................................................................1
18-1 Port Classification .............................................................................................................................................................1
18-2 Port Policing......................................................................................................................................................................2
18-3 Queue Policing .................................................................................................................................................................2
18-4 Port Scheduler..................................................................................................................................................................3
18-5 Port Shaping .....................................................................................................................................................................6
18-6 Port Tag Remarking ..........................................................................................................................................................6
18-7 Port DSCP ........................................................................................................................................................................7
18-8 DSCP-Based QoS............................................................................................................................................................8
18-9 DSCP Translation .............................................................................................................................................................9
18-10DSCP Classification........................................................................................................................................................10
18-11 QoS Control List .............................................................................................................................................................11
18-12Storm Control..................................................................................................................................................................14
Chapter 19 Mirroring .........................................................................................................................................................................1
Chapter 20 UPnP................................................................................................................................................................................1
Chapter 21 PTP(IEEE 1588)..............................................................................................................................................................1
21-1 Configuration ....................................................................................................................................................................1

21-2 Status................................................................................................................................................................................4
Chapter 22 L2CP ................................................................................................................................................................................1
Chapter 23 Diagnostics.....................................................................................................................................................................1
23-1 Ping ..................................................................................................................................................................................1
23-2 Ping6 ................................................................................................................................................................................1
23-3 Traceroute ........................................................................................................................................................................2
Chapter 24 Maintenance....................................................................................................................................................................1
24-1 Reboot ..............................................................................................................................................................................1
24-2 Factory Defaults................................................................................................................................................................1
24-3 Software............................................................................................................................................................................1
24-3.1 Upload ................................................................................................................................................................1
24-3.2 Image Select ......................................................................................................................................................2
24-4 Configuration....................................................................................................................................................................2
24-4.1 Save startup-config.............................................................................................................................................2
24-4.2 Backup ...............................................................................................................................................................2
24-4.3 Restore...............................................................................................................................................................3
24-4.4 Activate...............................................................................................................................................................3
24-4.5 Delete .................................................................................................................................................................3
Appendix A G.8032 Configuration Procedure..................................................................................................................................1
Appendix B Acronyms ......................................................................................................................................................................1

HMG-838PT & HMG-838EPT Web Configuration 1-1
Chapter 1
Web Configuration Home
Web-based management provides easy-to-use and straightforward graphic interface for users to configure the device
quickly. The web-based management of this device supports various web browsers such as Internet Explorer (Version
9.0 or above is recommended), Firefox or Google Chrome. To access the web management interface for the first time
or after returning the device back to factory defaults, enter the default IP address of the switch in the browser's location
bar. See below for explanations.
1-1 Entering Web Configuration
To enter the web based management for the first time or after returning the device back to factory defaults, input the
default IP address “192.168.16.1” in your web browser. Then, a standard login prompt will appear depending on the
type of browser used. The example below is with Chrome browser.
Enter the Ethernet Direct factory default username “admin” with “no password”. After successfully entering the web
based management, the Port State page will appear.
1-2 Port State
The initial page, when logged in, displays a graphical overview of the port status for the electrical and optical ports. The

Web Configuration Home
HMG-838PT & HMG-838EPT Web Configuration 1-2
"Green" port indicates a LAN connection with a speed of 100M. The "Amber" colored port indicates a LAN connection
speed of 1000M.
The status display can be reached by using the left side menu, and return to Ports > State.
1-3 Refresh
To update the screen, click the "Refresh" button. For automatic updating of the screen, the "Auto-refresh" tick box may
be ticked. The screen will be auto refreshed every 3 seconds.
Unless connected directly on a local LAN, we recommend not using the auto-refresh function as it does generate a bit
of traffic.
1-4 Save
When there is configuration change in the switch, please do remember to click “Save” bottom to save the Running
Configuration (running-config) to Startup Configuration (startup-config), so those changes you make in the switch will be
save into the switch memory even there is power on/off.
Note: The difference between system configuration files:
File Name Definitions
running-config The current configuration, if do not use “Save” button to save this current configuration to system, it will be
lost after power on/off.
startup-config The current system startup configuration, it will not be affect by power on/off.
default-config The factory default configuration.
1-5 Help
The managed switch series has an online "help" system to aid the engineer when setting the parameters of the device.
Each functional setting page is accompanied by a specific "help" for that functional page. The user can display this help
"pop up" at any time by clicking the "help" icon.
1-6 Logout
After completing configuration, we recommend logging out of the web GUI. This is easily accomplished by clicking the
logout icon.

Web Configuration Home
HMG-838PT & HMG-838EPT Web Configuration 1-3
After clicking the logout icon, a confirmation screen will be displayed. Click "OK" to finish logging out or click "Cancel" to
return to the web configuration GUI.
For the remainder of this section, each menu item will be explained one by one, in order as they descend down the
menu screen, starting with the "System" menu.

HMG-838PT & HMG-838EPT Web Configuration 2-1
Chapter 2
System
The configuration under the "System" menu includes device settings such as IP address, time server, etc.
2-1 System Information Configuration
The configuration information entered here will be reported in the standard SNMP MIB2 for 'sysContact' (OID
1.3.6.1.2.1.1.4), 'sysName' (OID 1.3.6.1.2.1.1.5) and 'sysLocation' (OID 1.3.6.1.2.1.1.6). Remember to click the “Save”
button after entering the configuration information.
System Contact: Indicate the descriptive contact information. This could be a person’s name, email address or
other descriptions. The allowed string length is 0~255 and the allowed content is the ASCII characters from
32~126.
System Name: Indicate the hostname for this device. Alphabets (A-Z; a-z), digits (0-9) and minus sign (-) can be
used. However, space characters are not allowed. The first character must be an alphabet character. The first and
last character must not be a minus sign. The allowed string length is 0~255.
System Location: Indicate the location of this device. The allowed string length is 0~255.
2-2 System Information
The system information screen will display the configuration information of the system, in System section shows
“Contact”, “Name” and “Location”, the Hardware section shows “MAC Address” and “Hardware Version”, the Time
section shows “System Date” and “System Uptime" and the Software section shows the “Software Version” and
“Software Date”.

System
HMG-838PT & HMG-838EPT Web Configuration 2-2
2-3 System IP
The section allows you to setup the switch’s IP configuration, interface and routes.
IP Configuration:
Mode: The pull-down configures whether the IP stack should act as a Host or a Router.
Host: IP traffic between interfaces will not be routed.
Router: Traffic is routed between all interfaces. When configuring this device for multiple VLANs, the Router
mode should be chosen.
DNS Server: This setting controls the DNS name resolution done by the switch. The following modes are
supported:
From any DHCP interfaces: The first DNS server offered from a DHCP lease to a DHCP-enabled interface
will be used.
No DNS server: No DNS server will be used.
Configured: Explicitly provide the IP address of the DNS Server in dotted decimal notation.
From this DHCP interface: Specify from which DHCP-enabled interface a provided DNS server should be
preferred.
DNS Proxy: When DNS proxy is enabled, the system will relay DNS requests to the currently configured DNS
server, and reply as a DNS resolver to the client devices on the network.

System
HMG-838PT & HMG-838EPT Web Configuration 2-3
IP Interface:
Click "Add Interface" to add a new IP interface. A maximum of 8 interfaces is supported.
VLAN: This is the VLAN associated with the IP interface. Only ports in this VLAN will be able to access the IP
interface. This field is only available for input when creating a new interface.
DHCP: When this checkbox is enabled, the system will configure the IPv4 address and mask of the interface
using the DHCP protocol. The DHCP client will announce the configured System Name as hostname to provide
DNS lookup.
IPv4 Address: The IPv4 address of the interface is entered in dotted decimal notation. If DHCP is enabled, this
field is not used. The field may also be left blank if IPv4 operation on the interface is not desired.
IPv4 Mask: The IPv4 network mask is entered by a number of bits (prefix length). Valid values are between 0 and
30 bits for a IPv4 address. If DHCP is enabled, this field is not used. The field may also be left blank if IPv4
operation on the interface is not desired.
IPv4 Current Lease: For DHCP interfaces with an active lease, this column shows the current interface address,
as provided by the DHCP server.
IPv6 Address: An IPv6 address is a 128-bit record represented as eight fields of up to four hexadecimal digits
with a colon separating each field (:). For example, fe80::215:c5ff:fe03:4dc7. The symbol :: is a special syntax that
can be used as a shorthand way of representing multiple 16-bit groups of contiguous zeros; but it can appear only
once. It can also represent a legally valid IPv4 address. For example, ::192.1.2.34. The field may be left blank if
IPv6 operation on the interface is not desired.
IPv6 Mask: The IPv6 network mask is entered by a number of bits (prefix length). Valid values are between 1 and
128 bits for an IPv6 address. The field may be left blank if IPv6 operation on the interface is not desired.
IP Routes:
Route Network: The IP route is the destination IP network or host address of this route. Valid format is dotted
decimal notation or a valid IPv6 notation. A default route can use the value 0.0.0.0 or for IPv6 use the :: notation.
Route Mask: The route mask is a destination IP network or host mask, in number of bits (prefix length). It defines
how much of a network address that must match, in order to qualify for this route. Valid values are between 0 and
32 bits respectively 128 for IPv6 routes. Only a default route will have a mask length of 0 (as it will match
anything).
Gateway: This is the IP address of the gateway. Valid format is dotted decimal notation or a valid IPv6 notation.
Gateway and Network must be of the same type.
2-4 System IP Status
Display the status of IP interfaces and routes.

System
HMG-838PT & HMG-838EPT Web Configuration 2-4
Please refer to “System IP” for the configuration of the interfaces and routes. This page is informational only.
2-5 System NTP
Display the status of IP interfaces and routes.
NTP Configuration:
Mode: Configure the NTP mode operation. Possible modes are:
Enabled: Enable NTP client mode operation.
Disabled: Disable NTP client mode operation.
Server #: Enter the IPv4 or IPv6 address of an NTP server. IPv6 address is in 128-bit records represented as
eight fields of up to four hexadecimal digits with a colon separating each field (:). For example,
'fe80::218:a9ff:fe00:4ec0'. The symbol '::' is a special syntax that can be used as a shorthand way of representing
multiple 16-bit groups of contiguous zeros; but it can appear only once. NTP servers can also be represented by a
legally valid IPv4 address. For example, '::192.1.2.34'. The NTP servers are tried in numeric order. If 'Server 1' is
unavailable, the NTP client will try to contact 'Server 2'.
Note: The NTP Server support is only support NTPv4 Protocol.

System
HMG-838PT & HMG-838EPT Web Configuration 2-5
2-6 System Time
Setup the switch’s time from which time zone and daylight saving time mode.
The setting example above is for Eastern Standard Time in the United States. Daylight savings time starts on the
second Sunday in March at 2:00AM. Daylight savings ends on the first Sunday in November at 2:00AM. The daylight
savings time offset is 60 minutes (1 hour).
Time Zone Configuration:
Time Zone: Lists various Time Zones worldwide. Select appropriate Time Zone from the drop down and click
Save to set.
Acronym: Set the acronym of the time zone.
Daylight Saving Time Configuration:
Daylight Saving Time: This is used to set the clock forward or backward according to the configurations set
below for a defined Daylight Saving Time duration. Select “Disable” to disable the Daylight Saving Time
configuration. Select “Recurring” and configure the Daylight Saving Time duration to repeat the configuration
every year. Select “Non-Recurring” and configure the Daylight Saving Time duration for single time configuration.
(Default is Disabled)
Recurring & Non-Recurring Configurations:
Start time settings: Select the starting week, day, month, year, hours, and minutes.
End time settings: Select he ending week, day, month, year, hours, and minutes.
Offset settings: Enter the number of minutes to add during Daylight Saving Time. The allowed range is 1 to
1440.
2-7 System Log

System
HMG-838PT & HMG-838EPT Web Configuration 2-6
Setup a single or the multiple Remote System Log Servers on this page. The max. remote system log server can setup
to 3 servers.
System Log Configuration:
Server Mode: This sets the server mode operation. When the mode of operation is enabled, the syslog message
will send out to syslog server (at the server address). The syslog protocol is based on UDP communication and
received on UDP port 514. Syslog server will not send acknowledgments back to the sender since UDP is a
connectionless protocol and it does not provide acknowledgments. The syslog packet will always send out, even if
the syslog server does not exist. When the mode of operation is disabled, no syslog packets are sent out.
Server Address: This sets the IPv4 host address of syslog server. If the switch provides DNS feature, it also can
be a host name.
Syslog Level: This sets what kind of messages will send to syslog server. Possible levels are:
Info: Send information, warnings and errors.
Warning: Send warnings and errors.
Error: Send errors only.
2-8 Detailed Log
This page shows displays of the individual system log records. And View each log, by ID number.
2-9 System CPU Load
This page displays the CPU load, using an SVG graph.

System
HMG-838PT & HMG-838EPT Web Configuration 2-7
The load is measured as averaged over the last 100ms, 1sec and 10 seconds intervals. The last 120 samples are
graphed, and the last numbers are displayed as text as well. In order to display the SVG graph, your browser must
support the SVG format. Automatic refresh occurs every 3 seconds.
2-10 System SMTP
Configure the email alert system.
SMTP Configuration:
SMTP Mode: Set the SMTP mode operation. Possible modes are:
Enabled: Enable SMTP client mode operation.
Disabled: Disable SMTP client mode operation.
SMTP Server: Set the SMTP server IP address (this is the server that will forward email).

System
HMG-838PT & HMG-838EPT Web Configuration 2-8
SMTP Port: Set the SMTP port number. The default SMTP port is 25.
Server requires authentication: Check this box if your server requires authentication. In most cases, this is
required and the following must be entered.
Username: Enter the valid authentication username for SMTP server
Password: Enter the authentication password for username of SMTP server
Recipient mail address: Up to four recipient's E-mail addresses may be entered to be sent alert emails.
SMTP Mail Event:
These check boxes select what events will result in alert email messages being generated and sent.
System: Enable/disable the System group's mail events. Possible mail events are:
Warm Start: Enable/disable Warm Start mail event.
Cold Start: Enable/disable Cold Start mail event.
Power: Enable/disable the Power group's mail events. Possible mail events are:
Power 1 Status: Enable/disable Power 1 status mail event.
Power 2 Status: Enable/disable Power 2 status mail event.
Interface: Enable/disable the Interface group's mail events. Possible mail events are:
Port Link Up: Enable/disable Port Link up mail event.
Port Link Down: Enable/disable Port Link down mail event.

HMG-838PT & HMG-838EPT Web Configuration 3-1
Chapter 3
Green Ethernet
The configuration under the "Green Ethernet" menu includes a number of power saving techniques.
3-1 Green Ethernet LED
Configure the LED light intensity to reduce power consumption.
LED Power Reduction Configuration:
The LED light intensity may be adjusted in a percentage of intensity during programmable time periods. In the above
setting example, the LED intensity has been adjusted to 50% during daylight hours and reduced to only 10% intensity
during night hours.
The maintenance checkbox will bring LED intensity to 100% for 10 seconds in the event of any error (such as link
down).
3-2 Green Ethernet Configuration
Configure EEE (Energy-Efficient Ethernet) as well as Ethernet power savings.

Green Ethernet
HMG-838PT & HMG-838EPT Web Configuration 3-2
Port Power Savings Configuration:
Optimize EEE for: Enables/disables the EEE function for this switch. The two options are:
Power: The EEE function is enabled. This is the default setting.
Legacy: EEE is not enabled.
Port Configuration:
ActiPHY™: ActiPHY™ works by lowering the power for a port when there is no link. The port is power up for short
moment in order to determine if an Ethernet cable is inserted. For ports with no cable connection, the PHY
remains powered down to save energy.
PerfectReach™: PerfectReach™ is another power saving mechanism. PerfectReach™ works by determining the
cable length and lowering the Ethernet transmit power for ports with short cables.
EEE (Energy-Efficient Ethernet): EEE is a power saving option that reduces the power usage when there is low
or no traffic utilization. EEE was developed through the IEEE802.3az task force of the Institute of Electrical and
Electronic Engineers (IEEE). EEE works by powering down circuits when there is no traffic. When a port gets data
to be transmitted all circuits are powered up. The time it takes to power up the circuits is called wakeup time. The
default wakeup time is 30 us for 100Mbit links. EEE devices must agree upon the value of the wakeup time in
order to make sure that both the receiving and transmitting device has all circuits powered up when traffic is
transmitted. The devices can exchange wakeup time information using the LLDP (Link Layer Discovery Protocol)
protocol. EEE works for ports in auto-negotiation mode, where the port is negotiated to either 10 or 100 Mbit full
duplex modes. For ports that are not EEE-capable the corresponding EEE checkboxes are grayed out and thus
impossible to enable EEE for.
When a port is powered down for saving power, outgoing traffic is stored in a buffer until the port is powered up
again. Because there are some overhead in turning the port down and up, more power can be saved if the traffic
can be buffered up until a large burst of traffic can be transmitted. Buffering traffic will give some latency in the
traffic. For traffic that should not be held back, urgent queues may be assigned to reduce latency yet still result in
overall power saving.
EEE Urgent Queues: It is possible to minimize the latency for specific frames, by mapping the frames to a
specific queue (done with QOS), and then mark the queue as an urgent queue. When an urgent queue gets data
to be transmitted, the circuits will be powered up at once and the latency will be reduced to the wakeup time.
Queues set will activate transmission of frames as soon as data is available. Otherwise the queue will postpone