Ntron 708TX Installation and operating instructions

(Revised 2015-09-28) Page 1 of 157
700 Series
Managed Industrial
Ethernet Switch
User Manual &
Installation
Guide

(Revised 2015-09-28) Page 2 of 157
708TX, 708FX2, 708FXE2, 716TX, 716FX2, and 716FXE2 Industrial Ethernet Switch Installation Guide.............4
Installation....................................................................................................................................................................8
Connecting the Unit ................................................................................................................................................... 14
Overview of Advanced Features................................................................................................................................18
Mode of Operation..................................................................................................................................................................18
Port Mirroring .........................................................................................................................................................................18
Port Trunking ..........................................................................................................................................................................18
Quality of Service (QoS).........................................................................................................................................................18
Virtual LAN ............................................................................................................................................................................19
Rapid Spanning Tree Protocol ................................................................................................................................................20
SNMP Traps............................................................................................................................................................................20
IGMP Snooping ......................................................................................................................................................................20
N-Ring.....................................................................................................................................................................................20
N-Link.....................................................................................................................................................................................21
CIP ..........................................................................................................................................................................................21
DHCP......................................................................................................................................................................................21
DHCP Client ...........................................................................................................................................................................21
DHCP Relay Agent.................................................................................................................................................................22
DHCP Server...........................................................................................................................................................................22
LLDP.......................................................................................................................................................................................22
Port Security—MAC Address Based......................................................................................................................................22
Web Software Configuration .....................................................................................................................................24
Web Management ...................................................................................................................................................................24
Web Management - Home ......................................................................................................................................................25
Administration –System.........................................................................................................................................................27
Administration –SNMP..........................................................................................................................................................30
Administration –Fault ............................................................................................................................................................32
If a low voltage DC power supply is installed, these additional choices appear:....................................................................33
DHCP –Server –Setup Profiles .............................................................................................................................................34
DHCP –Server –Setup IP Maps ............................................................................................................................................36
DHCP –Server –View Bindings............................................................................................................................................41
DHCP –Relay & Local IP - Setup..........................................................................................................................................42
LLDP - Configuration.............................................................................................................................................................44
LLDP - Ports...........................................................................................................................................................................45
LLDP - Status..........................................................................................................................................................................46
LLDP - Statistics.....................................................................................................................................................................47
Ports –Configuration ..............................................................................................................................................................48
Ports –MAC Security –Learning, Continued… ....................................................................................................................52
Ports –MAC Security –Learning, Continued… ....................................................................................................................53
Ports –MAC Security –Authorization List............................................................................................................................54
Ports –MAC Security –Intruder Log.....................................................................................................................................55
Ports –Mirroring.....................................................................................................................................................................56
Ports –Trunking......................................................................................................................................................................58
Ports –QOS.............................................................................................................................................................................59
Statistics –Port Statistics ........................................................................................................................................................61
Statistics –Port Utilization......................................................................................................................................................62
VLAN –Configuration ...........................................................................................................................................................63
Bridging –Aging Time ...........................................................................................................................................................66
Bridging –Unicast Addresses.................................................................................................................................................67
Bridging –Multicast Addresses ..............................................................................................................................................69
Bridging –Show MAC by Port...............................................................................................................................................71
RSTP –Configuration.............................................................................................................................................................73
IGMP –Configuration ............................................................................................................................................................76
IGMP –RFilter .......................................................................................................................................................................81
N-View –Configuration..........................................................................................................................................................83
N-View –Ports........................................................................................................................................................................84
N-Ring –Configuration ..........................................................................................................................................................85
N-Ring –Advanced Configuration .........................................................................................................................................88
N-Ring –Status.......................................................................................................................................................................90

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N-Link –Configuration...........................................................................................................................................................94
N-Link –Status .......................................................................................................................................................................98
CIP –Configuration..............................................................................................................................................................103
CIP –Status...........................................................................................................................................................................104
Firmware/Config –TFTP......................................................................................................................................................105
Support –Web Site and E-mail.............................................................................................................................................106
BPCL –Broadcast Packet Count Limit Configuration .........................................................................................................107
User Management –Adding Users .......................................................................................................................................108
User Management –Removing Users...................................................................................................................................109
LogicalView..........................................................................................................................................................................110
Configuration –Save or Reset...............................................................................................................................................111
Help –Overview ...................................................................................................................................................................112
Help –Administration...........................................................................................................................................................113
Help –DHCP ........................................................................................................................................................................114
Help –LLDP.........................................................................................................................................................................115
Help –Ports...........................................................................................................................................................................116
Help –Statistics.....................................................................................................................................................................117
Help –VLAN........................................................................................................................................................................118
Help –Bridging.....................................................................................................................................................................119
Help –RSTP .........................................................................................................................................................................120
Help –IGMP.........................................................................................................................................................................121
Help –N-View......................................................................................................................................................................122
Help –N-Ring.......................................................................................................................................................................123
Help –N-Link.......................................................................................................................................................................124
Help –CIP.............................................................................................................................................................................125
Help –BPCL.........................................................................................................................................................................127
Help –User Management......................................................................................................................................................128
CLI Commands........................................................................................................................................................130
“?” (Help) ..............................................................................................................................................................................130
Logout...................................................................................................................................................................................130
Show, Add, or Delete ARL Entries.......................................................................................................................................131
Show or Set CIP Configuration.............................................................................................................................................132
Save or Reset the Configuration Settings..............................................................................................................................133
Show or Set IGMP Configuration.........................................................................................................................................133
Show or Set Mirror Configuration ........................................................................................................................................134
Show or Set N-Ring Configuration.......................................................................................................................................135
Show or Set N-View Configuration......................................................................................................................................135
Ping a Host............................................................................................................................................................................136
Show or Set Port Configuration ............................................................................................................................................137
Reset the Switch....................................................................................................................................................................138
Show or Set SNMP Configuration........................................................................................................................................138
Show or Clear the Last System Error....................................................................................................................................139
Show System Information.....................................................................................................................................................139
Set or Show the System IP Configuration.............................................................................................................................140
Show or Set System Configuration .......................................................................................................................................141
VLAN Addition and Deletion Example................................................................................................................... 142
VLAN Configuration Examples .............................................................................................................................. 148
Example 1 –Basic understanding of port-based VLANs......................................................................................................148
Example 2 –Basic understanding of tagged VLANs (Admit –Tagged Only) .....................................................................149
Example 3 –Basic understanding of tagged VLANs (Admit –All).....................................................................................150
Example 4 –Basic understanding of Hybrid VLANs ...........................................................................................................151
Example 5 –Basic understanding of Overlapping VLANs...................................................................................................152
Example 6 –Basic understanding of VLANs with Multicast Filtering.................................................................................153
KEY SPECIFICATION –708TX, 708FX2, 708FXE2...........................................................................................154
KEY SPECIFICATION –716TX, 716FX2, 716FXE2...........................................................................................155
N-TRON Limited Warranty.....................................................................................................................................157

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708TX, 708FX2, 708FXE2, 716TX, 716FX2, and 716FXE2 Industrial Ethernet Switch Installation
Guide
The N-TRON 700 Series Industrial Ethernet Switch offers outstanding performance and ease of use. It is ideally suited for
connecting Ethernet enabled industrial and or security equipment and is a fully managed switch.
PRODUCT FEATURES
• Full IEEE 802.3 Compliance
• Eight 10/100 BaseTX RJ-45 Ports (708TX)
• Six 10/100 BaseTX RJ-45 Ports and two
100BaseFX(E) Ports (708FX2 and 708FXE2 models
only)
• Extended Environmental Specifications
• Autosensing 10/100BaseTX, Duplex, and MDIX
• Offers Rapid Spanning Tree Protocol
• Trunk with other N-Tron trunking capable switches
over two ports
• Store & Forward Technology
• Plug and Play IGMP Support
• Rugged Din-Rail Enclosure
• Redundant Power Inputs (10-30 VDC)
o–HV High Voltage Option (40-160VDC)
• SNMP v1, v2 and v3.
• Web Browser Management with detailed ring map and
fault location charting.
• Web Browsing and N-View Switch Monitoring
REGULATORY CERTIFICATIONS
II 3 G Ex nA nC
IIC Gc
DEMKO 03 ATEX
0316686U
PRODUCT CONFIGURATIONS
• 708TX –Eight 10/100 Base-TX RJ45 Copper Ports
• 708FX2-XX –Six 10/100 Base-TX RJ45 Copper Ports, two
multimode 100BaseFX Ports
• 708FXE2-XX-YY –Six 10/100 Base-TX RJ45 Copper Ports, two
singlemode 100BaseFX Ports
• 716TX-VV –Sixteen 10/100 Base-TX RJ45 Copper Ports
• 716FX2-XX-VV –Fourteen 10/100 Base-TX RJ45 Copper Ports,
two multimode 100BaseFX Ports
• 716FXE2-XX-YY-VV –Fourteen 10/100 Base-TX RJ45 Copper
Ports, two singlemode 100BaseFX Ports
Where: XX = ST or SC; YY = 10, 40 or 80 for Singlemode, Blank
for Multimode; E = Singlemode, Blank Otherwise; VV = HV for High
voltage, Blank for Standard voltage
MANAGEMENT FEATURES
• IGMP Snooping
• VLAN
• QoS
• Trunking
• Mirroring
• LLDP
• CIP
• 802.1D-2004 Rapid Spanning Tree
• N-RING™ (N-Tron proprietary Ring Management)
• N-LINK™ (N-Tron proprietary Coupling Management)
• DHCP Server, Option 82 relay
• Port Security—MAC Address Based
708 Series only
708 Series only
716-HV Models Only

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Copyright, © N-Tron Corporation, 2008-2015
3101 International Drive, Building 6
Mobile, AL 36606 USA
All rights reserved. Reproduction, adaptation, or translation without prior written permission from N-Tron
Corporation is prohibited, except as allowed under copyright laws.
Ethernet is a registered trademark of Xerox Corporation. All other product names, company names, logos
or other designations mentioned herein are trademarks of their respective owners.
The information contained in this document is subject to change without notice. N-Tron Corporation makes
no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of
merchantability or fitness for a particular purpose. In no event shall N-Tron Corporation be liable for any
incidental, special, indirect or consequential damages whatsoever included but not limited to lost profits
arising out of errors or omissions in this manual or the information contained herein.
WARNING
AVERTISSEMENT
Do not perform any services on the unit unless qualified to do so. Do not substitute unauthorized parts or
make unauthorized modifications to the unit.
Ne pas effectuer de services sur l'appareil s'il n'est pas qualifié pour le faire. Ne pas remplacer les pièces non
autorisées ou de modifications non autorisées de l'appareil.
Do not operate the unit with the top cover removed, as this could create a shock or fire hazard.
Ne pas faire fonctionner l'unité avec le couvercle retiré, ce qui pourrait créer une décharge électrique ou un
incendie.
Do not block the air vents on the sides or the top of the unit.
N'obstruez pas les fentes d'aération sur les côtés ou en haut de l'unité.
Do not operate the equipment in the presence of flammable gasses or fumes. Operating electrical equipment
in such an environment constitutes a definite safety hazard.
Ne pas utiliser le matériel en présence de gaz ou de vapeurs inflammables. L'utilisation de matériel électrique
dans un tel environnement constitue un danger certain.
Do not operate the equipment in a manner not specified by this manual.
Ne pas utiliser le matériel en présence de gaz ou de vapeurs inflammables. L'utilisation de matériel électrique
dans un tel environnement constitue un danger certain.
Do not service the equipment without first disconnecting the power connector.
Ne pas réparer l'équipement sans d'abord débrancher le connecteur d'alimentation.

(Revised 2015-09-28) Page 6 of 157
SAFETY WARNINGS
AVERTISSEMENTS DE SÉCURITÉ
GENERAL SAFETY WARNINGS
GÉNÉRAL AVERTISSEMENTS DE SÉCURITÉ
WARNING: If the equipment is used in the manner not specified by N-Tron Corporation, the protection
provided by the equipment may be impaired.
AVERTISSEMENT: Si l'équipement est utilisé d'une manière non spécifiée par N-Tron Corporation, la
protection fournie par l'équipement peut être compromise.
WARNING: Do not service the equipment without first disconnecting the power connector.
AVERTISSEMENT: Ne pas réparer l'équipement sans d'abord débrancher le connecteur d'alimentation.
LASER SAFETY (708FXE2 Models -40, -80, 716FXE2 Models -40, -80)
CAUTION: CLASS 1 LASER PRODUCT. Do not stare into the laser!
ATTENTION: PRODUIT LASER CLASSE 1. Ne pas regarder dans le laser!
Contact Information
N-Tron Corporation
3101 International Drive, Building 6
Mobile, AL 36606
TEL: [phone]
FAX: [phone]
WEBSITE: www.redlion.net
E-MAIL: [email protected]
ENVIRONMENTAL SAFETY
WARNING: Disconnect the power and allow to cool 5 minutes before touching.
AVERTISSEMENT:Déconnectez le câble d'alimentation et laisser refroidir 5 minutes avant de la toucher.
ELECTRICAL SAFETY
Power must be supplied by an isolating source and a UL-rated in-line 2.5A fuse must be installed
immediately before the unit.

(Revised 2015-09-28) Page 7 of 157
L'alimentation doit être alimenté par une source d'isoler et d'un fusible UL-évalué en ligne 2.5A doit être
installé immédiatement en amont de l'unité.
Must be used with a Listed UL Industrial Power Supply.
Doit être utilisé avec une alimentation UL Listed industrielle.
WARNING: Disconnect the power cable before removing any enclosure panel.
AVERTISSEMENT: Débrancher le câble d'alimentation avant de retirer le panneau du chassis.
WARNING: Do not operate the unit with the any cover removed.
AVERTISSEMENT: Ne pas utiliser l'appareil avec n'importe quel couvercle retiré.
WARNING: Properly ground the unit before connecting anything else to the unit. Units not properly
grounded may result in a safety risk and could be hazardous and may void the warranty. See the grounding
technique section of this user manual for proper ways to ground the unit.
AVERTISSEMENT:Correctement à la terre de l'unité avant tout raccordement à l'unité. Unités pas
correctement mise à la terre peut entraîner un risque de sécurité et pourraient être dangereux et peut annuler
la garantie. Voir la section technique de mise à la terre de ce mode d'emploi des moyens appropriés à la
masse de l'appareil.
WARNING: Never install or work on electrical equipment or cabling during periods of lightning activity.
AVERTISSEMENT:Ne jamais installer ou de travailler sur un équipement électrique ou de câblage
pendant les périodes d'activité de la foudre.
WARNING: Do not perform any services on the unit unless qualified to do so.
AVERTISSEMENT:Ne pas effectuer de services sur l'appareil s'il n'est pas qualifié pour le faire.
WARNING: Do not block the air vents.
AVERTISSEMENT:Ne pas obstruer les bouches d'aération.
WARNING: Observe proper DC Voltage polarity when installing power input cables. Reversing voltage
polarity can cause permanent damage to the unit and void the warranty.
AVERTISSEMENT:Respecter la polarité correcte de tension DC lors de l'installation des câbles
d'alimentation d'entrée. Inversion de polarité de tension peut causer des dommages permanents à l'appareil
et annule la garantie.
Hazardous Location Installation Requirements (Standard Voltage Models)
1. This equipment is suitable for use in Class I, Div. 2, Groups A, B, C, D or non-hazardous locations
only.
Cet équipement est adapté pour une utilisation dans la classe I, Division 2, Groupes A, B, C et D ou
non dangereux endroits seulement.
2. WARNING: Explosion Hazard –Substitution of components may impair suitability for Class I,
Division 2.
AVERTISSEMENT:Risque d'explosion - Remplacement d'un composant peut empêcher la
conformité de Classe I, Division 2.
3. WARNING: Explosion Hazard - Do not connect or disconnect any connections while circuit is live
unless area is known to be non-hazardous.
AVERTISSEMENT:Risque d'explosion - Ne pas brancher ou débrancher les connexions lorsque le
circuit est sous tension sauf si la zone est connue pour être non dangereux.

(Revised 2015-09-28) Page 8 of 157
4. WARNING: Explosion Hazard –Do not replace the device unless power has been switched off or
the area is known to be non-hazardous.
AVERTISSEMENT:Risque d'explosion - Ne pas remplacer le périphérique à moins que
l'alimentation a été coupé ou que la zone est connu pour être non dangereux.
5. Use 60/75°C rated Copper wire for 708 and 90°C or higher for 716, (0.22Nm) 2lb/in tightening
torque for field installed conductors.
Utilisez 60/75°C classé fil de cuivre pour 708 et 90°C ou plus pour 716, (0.22Nm) 2lb/in couple de
serrage pour les conducteurs installés sur le terrain.
6. WARNING: Exposure to some chemicals may degrade the sealing properties of materials used in
the Sealed Relay Device. Relays U13 and U25.
AVERTISSEMENT: L'exposition à certains produits chimiques peut dégrader les propriétés
d'étanchéité des matériaux utilisés dans le dispositif de relais scellé. Relais U13 et U25.
Please make sure the 700 Series Ethernet Switch package contains the following items:
1. 700 Series Switch
2. Product CD
Contact your carrier if any items are damaged.
Installation
Read the following warning before beginning the installation:
Lire l'avertissement suivant avant de commencer l'installation:
WARNING
AVERTISSEMENT
Never install or work on electrical equipment or cabling during periods of lightning activity. Never connect
or disconnect power when hazardous gasses are present.
Ne jamais installer ou de travailler sur un équipement électrique ou de câblage pendant les périodes
d'activité de la foudre. Ne jamais brancher ou débrancher l'alimentation en gaz dangereux sont présents.
Disconnect the power cable before removing any enclosure panel.
Débrancher le câble d'alimentation avant de retirer le panneau du chassis.
UNPACKING
Remove all the equipment from the packaging, and store the packaging in a safe place. File any damage
claims with the carrier.
CLEANING - Clean only with a damp cloth.

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ATEX Installation Requirements (708 Series Only)
1. The conductor size of the phase conductor must be in the range of 16-28AWG (0.08mm²-1.31mm²).
2. Field wiring must be suitable for a minimum of 110°C.
3. Ethernet Switches are intended for mounting in an ATEX-Certified IP54 enclosure in a pollution
degree 2 environments as defined by IEC 60664-1.
II 3 G Ex nA nC IIC T4 Gc DEMKO 03 ATEX 0316686U
4. Temperature testing of the Ethernet Switches was conducted on the switch itself in an 85°C air-
circulating oven and resulted in a Temperature Code of T4. However, end-product temperature
testing shall be considered.
5. The end user shall provide bonding means as necessary. All bonding equipment (components)
shall be evaluated according to EN 60079-15:2010 and covered by a component certificate for the
actual use. When installing bonding components that will pass through an enclosure wall, they
must have a minimum of IP54 rating equal to the enclosure. All electrical clearances must be
maintained per the manufacturer’s instructions of the bonding component or per EN 60079-
15:2010.
6. Ethernet Switch requires protection against transients. The end-product shall provide a suitable
form of protection that removes the risk of or limits transients to no more than 42V.
7. Products are evaluated to EN 60079-0:2012 and EN 60079-15:2010.

(Revised 2015-09-28) Page 10 of 157
DIN RAIL MOUNTING FOR 708TX AND 708FX2 SERIES
Install the unit on a standard 35mm Din-Rail. Recess the 708TX unit to allow at least 3” of horizontal
clearance for copper cable bend radius. Recess the 708FX2 unit to allow at least 5” of horizontal clearance
for fiber cable bend radius.
Vertical Mounting
To mount the unit vertically to the 35mm DIN-
Rail, place the top edge of the bracket on the back
of the unit against the DIN-Rail's top edge at an
upward angle. Then, rotate the unit downward and
back against the DIN-Rail until it snaps into place.
To remove the vertically mounted unit from 35mm
DIN-Rail, carefully apply downward pressure on
the unit. Then, rotate the unit upward and away
from the 35mm DIN-Rail and lift up for removal.
Horizontal Mounting
To mount the unit horizontally to the 35mm DIN-Rail,
place the bottom edge of the bracket on the back of the
unit against the DIN-Rail's bottom edge at a downward
angle. Then, rotate the unit upward and back against
the DIN-Rail until it snaps into place.
To remove the horizontally mounted unit from 35mm
DIN-Rail, carefully apply upward pressure on the unit.
Then, rotate the unit downward and away from the
35mm DIN-Rail and lower it for removal.

(Revised 2015-09-28) Page 11 of 157
DIN RAIL MOUNTING FOR 716TX AND 716FX2 SERIES
Install the unit on a standard 35mm Din-Rail. Recess the 716TX unit to allow at least 3” of horizontal
clearance for copper cable bend radius. Recess the 716FX2 unit to allow at least 5” of horizontal clearance
for fiber cable bend radius. There should be at least 4” of clearance on both the top and bottom of the unit
to allow proper ventilation.
To mount the unit to the 35mm din-rail, place top edge of the bracket on the back of the unit against the din-
rail at an upward angle. Lower the bottom of the unit until it snaps into place.
Note: When mounting the switch in the vertical position, you must orientate the power connector to the top
as shown above for proper ventilation.
OPTIONAL MOUNTING:
Most N-Tron™ products are designed to be
mounted on industry standard 35mm DIN-
Rail. However, DIN-Rail mounting may
not be suitable for all applications.
Our Universal Rack Mount Kit (P/N:
URMK) may be used to mount the 700
Series to standard 19" racks as an option.
Our Panel Mount Assembly (P/N: 700-PM)
may be used to securely mount the 700
Series to flat surfaces or panels as an
option.

(Revised 2015-09-28) Page 12 of 157
FRONT PANEL
From Top to Left:
RJ45 Ports Auto Sensing 10/100 Base-TX Connections
Fiber Ports 100 Base-FX Connections (only on 708FX2 model)
LED lights when Power is supplied to the unit
NOTE: The RJ45 data port has two LEDs located on each connector. The left LED indicates LINK status,
and the right LED indicates ACTIVITY.
LEDs: The table below describes the operating modes:
LED
Color
Description
GREEN
Power is ON
RED
Power is ON and a fault condition exists
OFF
Power is OFF
LNK
GREEN
10/100Mb Link between ports
OFF
No Link between ports
ACT
GREEN
Data is active between ports
OFF
Data is inactive between ports

(Revised 2015-09-28) Page 13 of 157
APPLYING POWER (Side View)
Unscrew & Remove the DC Voltage Input
Plug from the Power Input Header
Install the DC Power Cables into the Plug
(observing polarity).
Plug the Voltage Input Plug back into the
Power Input Header. This is the power
disconnect device that must be removed
before performing any kind of service or
maintenance on the device.
Tightening torque for the terminal block
power plug is 0.5 Nm/0.368 Pound Foot.
Verify the Power LED stays ON (GREEN).
Notes:
Only 1 power supply must be connected to power for minimal operation. For redundant power
operation, V1and V2inputs must be connected to separate DC Voltage sources. This device will
draw current from both sources simultaneously. Use 16-28AWG (0.08mm²-1.31mm²) wire when
connecting to the power supply.
The Fault pins on the power connector can be used for an alarm contact. The current carrying
capacity is 1A at 24VDC. It is normally open and the relay closes when a fault condition occurs.
These pins can be used to connect an external warning device such as a light in order to provide an
external alarm. The conditions for generating a fault condition (closing the relay) can be configured
through software.
Recommended 24V DC Power Supplies (Standard Voltage Models), similar to:
N-Tron’s P/N NTPS-24-1.3:
Input AC 115/230V
Output DC 24-28V
Output Current 1.3A @ 24V
1.0A @ 28V
Power 30W
35 mm DIN-Rail Mountable
Dimensions: 45X75X91 mm

(Revised 2015-09-28) Page 14 of 157
Connecting the Unit
For FX/FXE units, remove the dust cap from the fiber optic connectors and connect the fiber optic cables.
The TX port on the FX/FXE models should be connected to the RX port of the far end station. The RX port
on the FX/FXE versions should be connected to the TX port of the far end station.
For 10/100 Base-TX ports, plug a Category 5E twisted pair cable into the RJ45 connector. Connect the
other end to the far end station. Verify that the LNK LEDs are ON once the connection has been completed.
To connect any port to another device (end node, Switch or Repeater), use a standard Category 5E straight
through or crossover cable with a
minimum length of one meter and a
maximum length of 100 meters.
N-Tron recommends the use of pre-
manufactured Cat5E cables to ensure the
best performance. If this is not an option
and users must terminate their own ends
on the Cat5E cables; one of the two color
coded standards shown to the right should
be utilized. If a user does not follow one
of these two color code standards then the
performance and maximum cable distance
will be reduced significantly, and may
prevent the switch from establishing a
link.
Warning: Creating a port to port connection on the same switch (i.e. loop) is an illegal operation and
will create a broadcast storm which will crash the network!

(Revised 2015-09-28) Page 15 of 157
N-TRON SWITCH GROUNDING TECHNIQUES
The grounding philosophy of any control system is an integral part of the design. N-Tron switches are
designed to be grounded, but the user has been given the flexibility to float the switch when required. The
best noise immunity and emissions (i.e. CE) are obtained when the N-Tron switch chassis is connected to
earth ground via a drain wire (20 gauge minimum size wire). Some N-Tron switches have metal din-rail
brackets that can ground the switch if the din-rail is grounded. In some cases, N-Tron switches with metal
brackets can be supplied with optional plastic brackets if isolation is required.
Both V- legs of the power input connector are connected
to chassis internally on the PCB. Connecting a drain wire
to earth ground from one of the V- terminal plugs as
shown here will ground the switch and the chassis. The
power leads from the power source should be limited to 3
meters or less in length.
As an alternate, users can run a drain wire & lug from any of the
Din-Rail screws or empty PEM nuts on the enclosure. When
using an unused PEM nut to connect a ground lug via a machine
screw, care should be taken to limit the penetration of the outer
skin by less than 1/4 in (NOTE: Recommend #6 32X1/4"
Phillips pan head zinc screw). Failure to do so may cause
irreversible damage to the internal components of the switch.
Note: Before applying power to the grounded switch, you must
use a volt meter to verify there is no voltage difference between
the power supply’s negative output terminal and the switch
chassis grounding point.
If the use of shielded cables is required, it is generally recommended to only connect the shield at one end to
prevent ground loops and interfere with low level signals (i.e. thermocouples, RTD, etc.). Cat5e cables
manufactured to EIA-568A or 568B specifications are required for use with N-Tron Switches.
In the event all Cat5e patch cable distances are small (i.e. All Ethernet devices are located in the same local
cabinet and/or referenced to the same earth ground), it is permissible to use fully shielded cables terminated
to chassis ground at both ends in systems void of low level analog signals.

(Revised 2015-09-28) Page 16 of 157
RJ45 CONNECTOR CRIMP SPECIFICATIONS
Please reference the illustration below for your Cat5 cable specifications:

(Revised 2015-09-28) Page 17 of 157
SERIAL INTERFACE
The 700 Series switches provide an EIA-232 interface accessed via a 9-pin female connector (labeled
‘COM’ on the unit). This is used to access the Command Line Interpreter (CLI). The pin-outs are shown
below:
Serial Cable
Connect the serial COM port of your PC and the 700 Series Switch using a standard straight through serial
cable. You will require a cable with a 9-pin or 25-pin sub-D female connector for the PC end, and a 9-pin
male sub-D connector for the 708 Series end.
The following table shows the pin-out and the connections for both types of cable:
PC Port
25-Pin
9-Pin
700 Series
Female
Female
9-Pin Male
Signal Name
Pin #
Pin #
Pin #
Signal Name
TXD
2
3
3
RXD
RXD
3
2
2
TXD
GND
7
5
5
GND
Standard straight through serial cables are readily available from Radio Shack or a variety of computer
stores.
HyperTerminal
The following configuration should be used in HyperTerminal:
Port Settings: 115200
Data Bits: 8
Parity: NONE
Stop bits: 1
Flow Control: NONE

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Overview of Advanced Features
Mode of Operation
Each port on the switch can be configured into different modes of operation as shown below:
Copper Ports: 100Base Fiber Ports:
- Half Duplex - Full Duplex
- Full Duplex
- Auto Negotiation
Half Duplex
In half duplex mode, the CSMA/CD media access method is the means by which two or more stations share
a common transmission medium. To transmit, a station waits (defers) for a quiet period on the medium (that
is, no other station is transmitting) and then sends the intended message in bit-serial form. If, after initiating
a transmission, the message collides with that of another station, then each transmitting station intentionally
transmits for an additional predefined period to ensure propagation of the collision throughout the system.
The station remains silent for a random amount of time (back-off) before attempting to transmit again.
Full Duplex
Full duplex operation allows simultaneous communication between a pair of stations using point-to-point
media (dedicated channel). Full duplex operation does not require that transmitters defer, nor do they
monitor or react to receive activity, as there is no contention for a shared medium in this mode.
Auto Negotiation
In Auto Negotiation mode, the port / hardware detects the mode of operation of the station that is connected
to this port and sets its mode to match the mode of the station.
Port Mirroring
A Mirroring Port is a dedicated port that is configured to receive the copies of Ethernet frames that are being
transmitted out and also being received in from any other port that is being monitored.
Port Trunking
Port Trunking is the ability to group two network ports to increase the bandwidth between two machines
(switch or any work station). This feature allows grouping of high-speed connectivity and provides
redundant connection between switches, so that a trunk can act as a single link between the switches.
Quality of Service (QoS)
Quality of service (QoS) refers to resource reservation control mechanisms. Quality of service is the ability
to provide different priority to different applications, users, or data flows. Quality of service guarantees are
important if the network capacity is insufficient, especially for real-time streaming multimedia applications
such as voice over IP, online games and IP-TV, since these often require fixed bit rate and are delay
sensitive, and in networks where the capacity is a limited resource, for example in cellular data
communication. In the absence of network congestion, QoS mechanisms are not required.

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Each of these three QOS methods below is included or not based on the settings on the relevant browser
page:
1) Force High Priority (Port Based),
2) IEEE802.1p (Tagged QOS), or
3) DSCP (differentiated services code points) (RFC 2474).
When Force High Priority is enabled, the port based priority is included in the decision for all ports and all
frames received on a port will use the default QOS priority for that port in the decision. For example, if it is
desired to have ingress frames on a port egress to the highest priority transmit queue regardless of other
factors, then enable Force High Priority and set the port's Default Port Priority to 7.
Virtual LAN
The switch provides support for setting up tagged Virtual LANs (Local Area Networks). A port may belong
to any number of Virtual LANs. The VLAN membership of a device is determined by the VLAN(s) that
have been defined for the port to which the device is connected. If a device should move from one port to
another, it loses its current VLAN membership and inherits that of the new port it is connected to.
VLANs facilitate easy administration of logical groups of devices that can communicate as if they
were on the same LAN. Traffic between VLANs is restricted, unless the ports are explicitly configured
as overlapping VLANs. Switches forward unicast, multicast, and broadcast traffic only on LAN segments
that serve the VLAN to which the traffic belongs.
A Default Virtual LAN (VID=1) exists to which a port, which is not a member of any other Virtual LAN,
will belong. This allows the switch to operate as a ‘normal’ switch when it is used in a network. A port is
automatically removed from the Default VLAN when it is reconfigured to belong to another Virtual LAN,
because that is the most common operation. But, if desired, the port can be included in VLAN 1 by
configuring VLAN 1 last.
If switch ports are configured to transmit and receive untagged frames, end devices are able to communicate
throughout the LAN. Using Tagged VLANs, the switch has the ability to take non-tagged packets in some
ports, add a VLAN tag to the packet and send it out tagged ports on the switch. The VLANs can also be
configured to accept tagged packets in tagged ports, strip the tags off the packets, and send the packets back
out other untagged ports. This allows a network administrator to set up the switch to support devices on the
network that do not support VLAN Tagged packets. The administrator can also set up the ports to discard
any packets that are tagged or to discard any packets that are untagged based on a hybrid VLAN of both
tagged and untagged ports, and using the VLAN Ingress Filter on the switch.
For each switch port there is one and only one PVID (port VLAN ID) setting. If an incoming frame is
untagged and untagged frames are being accepted, then that frame will inherit the tag of the PVID value for
that port. Subsequent switch routing and treatment will be in accordance with that VLAN switch map. By
configuring PVIDs properly and configuring for all frames to exit untagged, the switch can achieve a ‘port
VLAN’ configuration in which all frames in and out can be untagged, thus not requiring external devices to
be VLAN cognizant.
To understand how a VLAN configuration will perform, first look at the port on which the frame enters the
switch, then the VLAN ID (if the frame is tagged) or the PVID (if the frame is untagged). The VLAN
defined by the VID or PVID defines a VLAN group with a membership of ports. This membership
determines whether a port is included or excluded as to frame egress from the switch.
The 700 Series switch also has the ability to allow overlapping VLANs. Overlapping VLANs give the user

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the ability to have one or more ports share two or more VLAN groups. For more information and examples
on how this could be implemented, please see the ‘VLAN Configuration Examples’ in this document,
and/or our website’s technical documents. Note that RSTP on overlapping VLANs is not supported and the
system will automatically disable RSTP on all but the lowest VID VLANs that have overlapping ports.
Rapid Spanning Tree Protocol
The Rapid Spanning Tree Protocol as specified in IEEE 802.1D-2004 is supported. One Spanning Tree per
non-overlapping VLAN is supported. The Rapid Spanning Tree Protocol (RSTP) supersedes the Spanning
Tree Protocol (STP) which was described in IEEE 802.1D-1998. The RSTP is used to configure a simply
connected active network topology from the arbitrarily connected bridges of a bridged network. Bridges
effectively connect just the LANs to which their forwarding ports are attached. Ports that are in a blocking
state do not forward frames. The bridges in the network exchange sufficient information to automatically
derive a spanning tree.
RSTP allows for much quicker learning of network topology changes than the older STP. RSTP supports
new and improved features such as rapid transition to forwarding state. RSTP also sends out new BPDUs
every hello time instead of just relaying them. RSTP interoperates with older STP switches by falling back
to the older STP when the older BPDUs are detected on bridge ports. The user can also manually configure
bridge ports to use the older STP when desired.
SNMP Traps
The 700 Series switch supports up to 5 SNMP Trap Stations to which SNMP Traps will be sent. The switch
supports four standard traps; Link Up, Link Down, Cold Start and Warm Start. SNMP Traps will be sent to
all the stations configured on the switch if a port Link goes up or down, when the switch first powers up and
when the switch is reset.
IGMP Snooping
IGMP Snooping is enabled by default, and the switch is Plug and Play for IGMP. IGMP snooping provides
intelligent network support for multicast applications. In particular, unneeded traffic is reduced. IGMP
Snooping is configured via the web console and if enabled, operates dynamically upon each power up.
Also, there can be manual only or manual and dynamic operation. Note that “static multicast group
address” can be used whether IGMP Snooping is enabled or not.
IGMP Snooping will function dynamically without user intervention. If some of the devices in the LAN do
not understand IGMP, then manual settings are provided to accommodate them. The Internet Group
Management Protocol (IGMP) is a protocol that provides a way for a computer to report its multicast group
membership to adjacent ‘routers’. In this case N-Tron 700 Series switches provide router-like functionality.
Multicasting allows one computer to send content to multiple other computers that have identified
themselves as interested in receiving the originating computer's content. Multicasting can be used to
transmit only to an audience that has joined (and not left) a multicast group membership. IGMP version 2 is
formally described in the Internet Engineering Task Force (IETF) Request for Comments (RFC) 2236.
IGMP version 1 is formally described in the Internet Engineering Task Force (IETF) Request for Comments
(RFC) 1112. The 700 Series supports v1 and v2.
N-Ring
N-Ring is enabled by default, and the switch is Plug and Play for N-Ring except that initially one must
enable an N-Ring enabled device to be the N-Ring Manager for a given N-Ring. Subsequently, N-Ring