Gearlinx NR4400 Series User manual

Gearlinx User Quick Start Guide v1.0
NR4400 Series
Duckfone Series
ZERO
hp://www.gearlinx.com
Phone: [phone]
Email: [e-mail]

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Table of Contents
Table of Contents ..................................................................................... Error! Bookmark not dened.
Welcome .................................................................................................................................................4
1.0 Get to know your NR4400 Network Resilience Plaorm............................................................6
1.1 Introducon to the NR4400..........................................................................................................6
1.2 NR4400 Models.............................................................................................................................7
1.3 Before you Begin Installing the NR4400........................................................................................7
1.4 Rack Mounng NR4400 ................................................................................................................8
1.5 NR4400 Front (serial facing) Panel................................................................................................9
1.5.1 Front Panel Icon and LED Behavior ......................................................................................10
1.6 NR4400 Rear (power facing) Panel .............................................................................................11
1.7 Labels ..........................................................................................................................................12
1.8 Conguring your NR4400............................................................................................................12
1.8.1 The Easy Way........................................................................................................................12
1.8.2 For Advanced Users – hostname.local.................................................................................13
1.8.3 Local Web UI ........................................................................................................................13
1.8.4 Secure Shell..........................................................................................................................14
1.8.5 NR Console Port ...................................................................................................................15
1.9 Restoring Factory Default........................................................................................................15
2.0 Get to know your Duckfone ............................................................................................................17
2.1 Introducon to the Duckfone .....................................................................................................17
2.2 Duckfone Models........................................................................................................................17
2.3 Before you Begin Installing the Duckfone...................................................................................17
2.3.1 Common Installaon Problems............................................................................................17
2.4 Power over Ethernet on the Duckfone .......................................................................................18
2.5 Duckfone Front (serial facing, POE) Panel...................................................................................18
2.6 Duckfone Rear (antenna facing) Panel........................................................................................18
2.6.1 Rear Panel Icon and LED Behavior .......................................................................................19
2.7 Conguring you Duckfone...........................................................................................................19
2.7.1 The Easy Way........................................................................................................................19
2.7.2 For Advanced Users – hostname.local.................................................................................20
1.8.3 Local Web UI ........................................................................................................................20
1.8.4 Secure Shell..........................................................................................................................21
1.9 Restoring Factory Default........................................................................................................22

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3.0 Sll need help?................................................................................................................................23
3.1 User Interface Manual ................................................................................................................23
3.2 Knowledge Base ..........................................................................................................................23
3.3 Partners.......................................................................................................................................23
3.4 Contact Gearlinx Technical Support Directly...............................................................................23
3.5 Reconnect with the Gearlinx Sales Team....................................................................................23

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Welcome
Thank you for purchasing our Gearlinx soluon! We hope you enjoy using our products as much as
we loved creang them!
Gearlinx™ is a team of leading forces, that builds and delivers technology that powers the world’s
connecvity. We understand the unique challenges and opportunity to keep networks operaonally
resilient and available for everyone, everywhere. Our plaorms are a fresh approach to providing a
holisc view of the network, to enable organizaons to manage network and operaonal resilience
in a unied way.
Everything we do challenges old networking paradigms. We approach networking and the edge
dierently. We live for the edge. The way we do it is by making remote access and edge compute
easy. We give you the exibility and control at scale. We make it simple and give you secure network
applicaon superpowers. We hope this guide assists you on your Gearlinx journey.
Gearlinx R&D Hardware & Soware Engineering Leadership

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CHAPTER 1
NR4400 Series Product
NR4416
NR4416-L
NR4448
NR4448-L

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1.0 Get to know your NR4400 Network Resilience Plaorm
“Network Resilience is crical to running a business. No network, no business.”
Todd Rychecky, President
1.1 Introducon to the NR4400
Gearlinx™ NR4400 Network Resilience as a Service™ plaorm is an enterprise Total Out-of-Band™
management soluon designed and opmized for ensuring business connuity in high density,
mission-crical data centers, colocaons, and enterprise edge networks. The NR4400 is accessed
and managed through ZERO, our Operaonal Resilience as a Service™ cloud plaorm, and was built
with an API-First approach for ght integraon with exisng DevOps and NetOps tools used within an
organizaon.
The NR4400 is the ideal plaorm to deploy, manage, and remediate network infrastructure while
ZERO delivers a centralized view that provides complete control of your network. The NR4400 allows
IT sta to access and manage their crical infrastructure by providing a separate and secure
management plane that supports out-of-band management, containers, advanced automaon
applicaons, edge compute, mass conguraon changes, soware updates, and more.
The Operaonal Resilience as a Service ™ subscripon allows your business to move away from a
heavy CAPEX model to a more exible OPEX consumpon model, saving your business signicant
money while ensuring business agility. Operaonal improvements and life cycle management are
achieved through ZERO which provides device management and deployment, centralized alerng,
warranty informaon, serial numbers, and subscripon status.
Every day is a good day when you save me, money, and have no network disrupons. Start today
and experience operaonal simplicity with the NR4400 Network Resilience Plaorm.

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1.2 NR4400 Models
The NR4400 currently ships with the following product models:
NR4448:
1.3 Before you Begin Installing the NR4400
Before you begin installing the NR4400 device ensure you have the following accessories or parts
included with your delivery:
•What’s included by default in every NR4400 shipment:
oRack mounng kit (2 x rack ears and 8 x rack screws)
▪You will need a small Philips head screwdriver to aach the screws
o2 x straight through 2m Ethernet cables
o1 x adapter DB9F to RJ45 straight serial
•What is ordered separately or as an add-on:
oAt least one (1) power cord; but ideally two (2)
▪These are sold separately as an accessory. You can purchase them from
Gearlinx (part number 444000) or from your favorite power cable vendor.
▪You can power an NR4400 with only one power cord. The reason there are
two (2) power ports is to provide redundancy of power in the event of a
power issue. When using both power ports it is recommended you power
them from dierent outlets or power sources to improve redundancy.
oDuckfone
▪A Duckfone can be purchased separately or bundled with an NR4400. A
Duckfone provides cellular connecvity (primary or failover) to your NR4400
▪If using a Duckfone you will need an acve data plan and at least one(1) SIM
card. Theis can be purchased directly from Gearlinx or from your favorite
mobile provider.

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1.4 Rack Mounng NR4400
You can mount the NR4400 on any standard size, 19-inch (about 49 cm) wide rack. The NR4400
requires 1 rack unit (RU) of space, which is 1.75 inches (44.45 mm) high.
To install the NR4400 into a 19-inch standard chassis:
Step 1. Place one of the supplied rack ears on the side of the NR4400 so that the
four rack holes align with the rack ears and use the supplied screws to secure the
ear to the side of the NR4400.
Step 2. Repeat Step 1 for the other side of the NR4400.
Step 3. Once both brackets are secured the NR4400 is ready to be installed into a
standard 19-inch rack.

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1.5 NR4400 Front (serial facing) Panel
The “Front” or “Serial Facing” panel of the NR4400 is dominated by RJ45 serial ports. The picture
above is of an NR4416 where you can clearly see 16 serial ports.
To the le of the serial ports is a switch. This rolled/straight switch only applies to the console port
serial port. All other serial ports are soware selectable.
A full descripon of the LEDs and Icons on this panel is in the next Secon.
Serial ports (RJ45)
NR4416 = 16 serial ports
NR4448 = 48 serial ports
Console Ports

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1.5.1 Front Panel Icon and LED Behavior
Solid Yellow
Starng to boot
Flashing Yellow
Starng services
Solid Green
Finished the startup sequence and ready
Solid Red
No link on NET1
Flashing Red
Link on NET1, waing for IP address assignment
Solid Green
NET1 has IP address
O
No link on NET3 (Duckfone not inserted)
Flashing Yellow
Link on NET3 and aempng to connect with Duckfone
Solid Red
SIM error
Solid White
Not registered on a network yet
Other
Green = 3G, Blue = LTE, Purple = 5G
O
Connecon to ZERO disabled
Flashing White
Registraon & synchronizaon with ZERO in progress
Flashing Red
Failed registraon with ZERO
Solid Yellow
Registered with ZERO, failed synchronizaon
Flashing Yellow
Synchronized, but error processing response from ZERO
Flashing Green
Synchronized, online and operaonal. Tesng Connecon
Solid Green
All tests remain passed, fully operaonal in ZERO
Heartbeat
CPU acvity (faster the heartbeat = higher the workload)
O
No user connected to any serial port
Solid Green
At least one user connected to at least one serial port

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1.6 NR4400 Rear (power facing) Panel

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1.7 Labels
The NR4400 products have 2 labels. The main label is found underneath and includes the device
MAC address, Serial number, unique password as shown in the example below.
1.8 Conguring your NR4400
1.8.1 The Easy Way
Assuming this local network is connected to the Internet the NR4400 will automacally connect to
Gearlinx ZERO. Alternavely, if you are using a Duckfone and it is preinstalled with a SIM and has a
valid Internet connecon it will provide an alternate path for the NR4400 device to connect to ZERO.
The most common and recommended way to congure your NR4400 series product is to log on to
your ZERO account and congure the unit via the cloud. Gearlinx products are designed to be
managed via ZERO.
You can log into ZERO here:
zero.gearlinx.com
When a NR4400 device is taken out of the box, its NET1 port will be
congured to request an address via DHCP.

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1.8.2 For Advanced Users – hostname.local
If not using ZERO or your local network does not hand out a DHCP address the NR4400 will use an
IPv4 Link Local Address (169.254.0.0/16).
Once the NR4400 has either acquired a DHCP lease, or selected an IPv4 Link Local address, it will
adverse its hostname using Mulcast DNS (mDNS). This means that it will be accessible on the local
network via hostname.local, where:
“hostname” is the devices model (eg. NR4416) followed by a dash “-“ and then its serial
number.
Gearlinx devices also support IPv6. If DHCPv6 or SLAAC is operaonal on the network, then the
device will acquire and IPv6 address via either protocol, and adverse that via mDNS, or it will
adverse its link local IPv6 address.
You can then congure your NR4400 series product a few dierent ways: via the local web UI, via a
secure shell connecon or via the console port, all of which are described separately below.
1.8.3 Local Web UI
You can use an internet browser that is connected to the NR4400 network by typing in:
hps://hostname.local as detailed in the secon above.
or if you know the “IP” address (for illustraon only, in this example: 192.168.1.84):
Open a web browser and type:
The default username is "admin". The default password is printed on the NR4400 label on the base
of the unit as shown in Secon 1.7 above. Username and password are case sensive.
EXAMPLE 1: (IP not known)
Product: NR4416
Serial Number: 0110923000066
hps://NR4416-0110923000066.local
EXAMPLE 2: (IP known: in this example 192.168.1.84)
hps://192.168.1.84
For example:
An NR4416 with a Serial number of 0110923000066 would be found via:
nr4416-0110923000066.local

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1.8.4 Secure Shell
You can iniate a shell session (ssh on Linux or Puy on Windows).
Hostname: IP address of the NR4400 (or hostname.local per above)
Port:22
Example command on Linux:
ssh [e-mail]
In the below command line example, for illustraon value, we assume the IP of the NR is:
192.168.1.84:
use the password on the boom of the NR4400

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1.8.5 NR Console Port
You can connect to the NR4400 via its Console Port. You can use a standard ethernet cable RJ45.
Congure your connecon with the following parameters:
•115200 bits per second
•8 data bits
•No parity
•1 Stop bit
•No ow control
Like the UI and SSH secons above your username is: Admin and your password is the password
found on the boom of the NR4400 device.
1.9 Restoring Factory Default
The erase buon (on the power face) uses a buon paern to trigger a cong erase/reset to factory
default. You will need a paperclip or something small and rm that can t in the erase hole. To
perform the factory reset you follow these 4 steps in quick succession:
•Depress the buon for a second
•release it for a second
•depress it again for a further second
•release
The unit will then immediately begin its factory reset roune, wiping all cryptographic keys and data
and returning its memory and state to factory default.

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CHAPTER 2
Duckfone
Duckfone 4

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2.0 Get to know your Duckfone
2.1 Introducon to the Duckfone
The Duckfone has a very similar experience to the NR4400 above. One of the key dierences with the
Duckfone from a soware feature perspecve is it doesn’t support running virtual machines or
containers. It has much lower “horsepower” and than an NR product.
Its primary role is to get things connected to the internet.
2.2 Duckfone Models
The Duckfone-4-GLB is (currently) the only model of Duckfone. This is an LTE (Cat 4) global cellular
gateway.
2.3 Before you Begin Installing the Duckfone
In the Duckfone kit box you should have received 2 x LTE antennas. Aach the antennas to the Main
and AUX antenna ports. A GPS antenna (not provided by default) is not needed for normal operaon.
The Duckfone is a cellular gateway soluon and requires an acve cellular SIM card (not supplied) for
proper operaon. Before using the Duckfone please purchase a SIM and ensure any relevant specic
informaon is known to you (such as if you need to congure the SIM with a custom APN).
Many SIMs will work out of the box with the Duckfone.
2.3.1 Common Installaon Problems
Three of the most common problems that customers run into while installing a Duckfone are:
•Having an acve SIM with available data
•Do I need a special APN for my SIM
•Have I installed the Duckfone in a locaon where I have a reliable and strong connecon to
the carrier I am connecng with

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2.4 Power over Ethernet on the Duckfone
The Duckfone must be powered over Ethernet (not supplied by default). We recommend an acve
(auto-sensing) POE injector that supports a minimum of 30W. Check that your PoE adapter complies
with IEEE802.3at standards or higher.
Beware of the quality and compliance to standards of many POE injectors on the market. We
recommend you source your POE injector from a reputable manufacturer that has a proven record of
meeng compliance requirements and manufacture their equipment to these standards.
2.5 Duckfone Front (serial facing, POE) Panel
The Duckfone-4 is equipped with:
•4 x “cisco straight” RJ45 serial ports
oThese ports are typically used to connect to devices you wish to remotely manage or
monitor
•1 x POE+ RJ45 ethernet port
2.6 Duckfone Rear (antenna facing) Panel
The Duckfone-4 rear panel includes:
•2 x cellular antenna SMA connectors (main and AUX)
•1 x GPS SMA connector
•2 x SIM slots
•1 x factory erase buon
•Signal LEDS as described in the next secon

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2.6.1 Rear Panel Icon and LED Behavior
Power
Solid Green
Device is powered
Solid Yellow
Starng to boot
Flashing Yellow
Starng services
Flashing Red
SIM error && no passthrough ethernet connecon?
Flashing White
Not registered on a network yet && no passthrough
ethernet connecon
Green
3G
Blue
4G/LTE
Purple
5G
Flashing (Green, Blue, Purple)
3G/4G/5G connecon but no ethernet connecon
Signal
Signal
1-5 bars depending on quality and strength of
connecon (more is beer)
2.7 Conguring you Duckfone
2.7.1 The Easy Way
Assuming you have a working SIM/cellular connecon the Duckfone will automacally connect to
Gearlinx ZERO.
The most common and recommended way to congure your Duckfone product is to log on to your
ZERO account and congure the unit via the cloud. Gearlinx products are designed to be managed
via ZERO.
You can log into ZERO here:
zero.gearlinx.com
When a Duckfone device is taken out of the box, its NET1 port will be
congured in passthrough and aempt to hand the cellular connecon to
a waing device via DHCP.

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2.7.2 For Advanced Users – hostname.local
If not using ZERO or don’t have a working SIM you can plug your Duckfone’s ethernet/LAN data
connecon to a PC and congure it locally.
The Duckfone will adverse its hostname using Mulcast DNS (mDNS). This means that it will be
accessible on the local network via hostname.local, where:
“hostname” is the devices model (eg. Duckfone-4) followed by a dash “-“ and then its serial
number.
Gearlinx devices also support IPv6. If DHCPv6 or SLAAC is operaonal on the network, then the
device will acquire and IPv6 address via either protocol, and adverse that via mDNS, or it will
adverse its link local IPv6 address.
Alternavely you can aempt to reach the Duckfone via:
•192.168.100.1
You can then congure your Duckfone a few dierent ways: via the local web UI, via a secure shell
connecon or via the console port, all of which are described separately below.
1.8.3 Local Web UI
You can use an internet browser that is connected to the Duckfone network by typing in:
hps://hostname.local as detailed in the secon above.
or if you know the “IP” address (for illustraon only, in this example: 192.168.100.1):
Open a web browser and type:
The default username is "admin". The default password is printed on the Duckfone label on the base
label of the unit. Username and password are case sensive.
EXAMPLE 1: (IP not known)
Product: Duckfone-4
Serial Number: 0111223001051
hps:// duckfone-4-0111223001051.local
EXAMPLE 2: (IP known: in this example 192.168.100.1)
hps://192.168.100.1
For example:
A Duckfone-4 with a Serial number of 0111223001051 would be found via:
duckfone-4-0111223001051.local