Comtrend Corporation VR-3031u User manual

VR-3031u
Multi-DSL Router
User Manual
Version A1.0, November 12, 2013
261099-021

1
Preface
This manual provides information related to the installation and operation of this
device. The individual reading this manual is presumed to have a basic
understanding of telecommunications terminology and concepts.
If you find the product to be inoperable or malfunctioning, please contact technical
support for immediate service by email at [e-mail]
For product update, new product release, manual revision, or software upgrades,
please visit our website at http://www.comtrend.com
Important Safety Instructions
With reference to unpacking, installation, use, and maintenance of your electronic
device, the following basic guidelines are recommended:
• Do not use or install this product near water, to avoid fire or shock hazard. For
example, near a bathtub, kitchen sink or laundry tub, or near a swimming pool.
Also, do not expose the equipment to rain or damp areas (e.g. a wet basement).
• Do not connect the power supply cord on elevated surfaces. Allow it to lie freely.
There should be no obstructions in its path and no heavy items should be placed
on the cord. In addition, do not walk on, step on, or mistreat the cord.
• Use only the power cord and adapter that are shipped with this device.
• To safeguard the equipment against overheating, make sure that all openings in
the unit that offer exposure to air are not blocked.
• Avoid using a telephone (other than a cordless type) during an electrical storm.
There may be a remote risk of electric shock from lightening. Also, do not use
the telephone to report a gas leak in the vicinity of the leak.
• Never install telephone wiring during stormy weather conditions.
CAUTION:
 To reduce the risk of fire, use only No. 26 AWG or larger
telecommunication line cord.
 Always disconnect all telephone lines from the wall outlet before servicing
or disassembling this equipment.
WARNING
 Disconnect the power line from the device before servicing.
 Power supply specifications are clearly stated in Appendix C -
Specifications.

2
Copyright
Copyright©2013 Comtrend Corporation. All rights reserved. The information
contained herein is proprietary to Comtrend Corporation. No part of this document
may be translated, transcribed, reproduced, in any form, or by any means without
prior written consent of Comtrend Corporation.
This program is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
details.
You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses/
NOTE: This document is subject to change without notice.
Protect Our Environment
This symbol indicates that when the equipment has reached the end of
its useful life, it must be taken to a recycling centre and processed
separate from domestic waste.
The cardboard box, the plastic contained in the packaging, and the parts that make
up this router can be recycled in accordance with regionally established regulations.
Never dispose of this electronic equipment along with your household waste; you
may be subject to penalties or sanctions under the law. Instead, please be
responsible and ask for disposal instructions from your local government.

3
Table of Contents
CHAPTER 1 INTRODUCTION...........................................................................................................5
CHAPTER 2 INSTALLATION.............................................................................................................6
2.1 HARDWARE SETUP...........................................................................................................................6
2.2 LED INDICATORS.............................................................................................................................8
CHAPTER 3 WEB USER INTERFACE............................................................................................10
3.1 DEFAULT SETTINGS .......................................................................................................................10
3.2 IP CONFIGURATION........................................................................................................................11
3.3 WIZARD SETUP..............................................................................................................................13
3.4 LOGIN TO ADVANCED WEB USER INTERFACE................................................................................21
CHAPTER 4 DEVICE INFORMATION...........................................................................................23
4.1 WAN .............................................................................................................................................24
4.2 STATISTICS.....................................................................................................................................25
4.2.1 LAN Statistics..................................................................................................................25
4.2.2 WAN Service ...................................................................................................................26
4.2.3 ATM Statistics.................................................................................................................26
4.2.4 xDSL Statistics................................................................................................................28
4.3 ROUTE...........................................................................................................................................34
4.4ARP...............................................................................................................................................35
4.5 DHCP............................................................................................................................................36
4.6 NAT SESSION ................................................................................................................................37
4.7 IGMP INFO....................................................................................................................................38
4.8 3G.................................................................................................................................................39
CHAPTER 5 ADVANCED SETUP.....................................................................................................40
5.1 LAYER 2INTERFACE ......................................................................................................................40
5.1.1 ATM Interface.................................................................................................................40
5.1.2 PTM Interface.................................................................................................................40
5.1.3 ETH WAN INTERFACE..................................................................................................41
5.2 WAN .............................................................................................................................................42
5.2.1 3G Service Setup....................................................................................................................43
5.3AUTO-DETECTION SETUP ...............................................................................................................45
5.4 NAT ..............................................................................................................................................46
5.4.1 Virtual Servers ................................................................................................................46
5.4.2 Port Triggering...............................................................................................................48
5.4.3 DMZ Host .......................................................................................................................50
5.4.4 IP Address Map ..............................................................................................................51
5.4.5 SIP ALG..........................................................................................................................53
5.4.6 IPSEC ALG.....................................................................................................................53
5.5 SECURITY ......................................................................................................................................54
5.5.1 IP Filtering .....................................................................................................................54
5.5.2 MAC Filtering.................................................................................................................57
5.6 PARENTAL CONTROL......................................................................................................................59
5.6.1 Time Restriction..............................................................................................................59
5.6.2 URL Filter.......................................................................................................................60
5.7 QUALITY OF SERVICE (QOS)..........................................................................................................62
5.7.1 QoS Queue Setup............................................................................................................63
5.7.2 QoS Policer ....................................................................................................................65
5.7.3 QoS Classification..........................................................................................................67
5.8 ROUTING .......................................................................................................................................69
5.8.1 Default Gateway.............................................................................................................69
5.8.2 Static Route.....................................................................................................................70
5.8.3 Policy Routing ................................................................................................................71
5.8.4 RIP..................................................................................................................................73
5.9 DNS..............................................................................................................................................74
5.9.1 DNS Server.....................................................................................................................74
5.9.2 Dynamic DNS .................................................................................................................75

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5.10 DSL.............................................................................................................................................76
5.11 UPNP...........................................................................................................................................78
5.12 DNS PROXY/RELAY ....................................................................................................................79
5.13 PRINT SERVER .............................................................................................................................80
5.14 INTERFACE GROUPING.................................................................................................................81
5.15 IPSEC ..........................................................................................................................................84
5.15.1 IPSec Tunnel Mode Connections.........................................................................................84
5.16 CERTIFICATE................................................................................................................................88
5.16.1 Local...............................................................................................................................88
5.16.2 Trusted CA......................................................................................................................90
5.17 POWER MANAGEMENT ................................................................................................................91
5.18 MULTICAST..................................................................................................................................92
CHAPTER 6 WIRELESS....................................................................................................................94
6.1 BASIC ............................................................................................................................................94
6.2 SECURITY ......................................................................................................................................96
6.3 MAC FILTER .................................................................................................................................99
6.4 WIRELESS BRIDGE.......................................................................................................................100
6.5ADVANCED ..................................................................................................................................101
6.6 SITE SURVEY ...............................................................................................................................104
6.7 STATION INFO ..............................................................................................................................105
CHAPTER 7 DIAGNOSTICS...........................................................................................................106
CHAPTER 8 MANAGEMENT ........................................................................................................108
8.1 SETTINGS.....................................................................................................................................108
8.1.1 Backup Settings.............................................................................................................108
8.1.2 Update Settings.............................................................................................................108
8.1.3 Restore Default.............................................................................................................109
8.2 SYSTEM LOG ...............................................................................................................................110
8.3 TR-069 CLIENT ...........................................................................................................................112
8.4 INTERNET TIME ...........................................................................................................................114
8.5ACCESS CONTROL .......................................................................................................................115
8.5.1 Passwords............................................................................................................................ 115
8.5.2 Services................................................................................................................................ 116
8.5.3 IP Address............................................................................................................................117
8.6 UPDATE SOFTWARE .....................................................................................................................118
8.7 REBOOT.......................................................................................................................................119
APPENDIX A - FIREWALL .............................................................................................................120
APPENDIX B - PIN ASSIGNMENTS..............................................................................................123
APPENDIX C - SPECIFICATIONS.................................................................................................124
APPENDIX D - SSH CLIENT ..........................................................................................................126
APPENDIX E - WSC EXTERNALREGISTRAR..........................................................................127
APPENDIX F - PRINTER SERVER................................................................................................131
APPENDIX G - CONNECTION SETUP.........................................................................................138

5
Chapter 1 Introduction
The VR-3031u is an 802.11n compliant Multi-DSL router that supports both ADSL2+ and
VDSL2. The latter is a brand new standard and technology perfect for triple play (Video,
Voice and Data) applications. The VR-3031u comes with four 10/100 Base-T Ethernet
ports, and one USB host, combining wired LAN connectivity and an integrated 802.11n
WiFi WLAN Access Point (AP) for wireless connectivity.
The VR-3031u is a cost effective solution designed to meet the needs of ISPs and carriers
planning on deploying a single DSL device for covering end users in different loop range areas.
Deploying VR-3031u is cost effective for ISPs and carriers because deploying a single CPE
DSL device with multiple profile support minimizes the number of required upgrades.

6
Chapter 2 Installation
2.1 Hardware Setup
Follow the instructions below to complete the hardware setup.
Non-stackable
This device is not stackable – do not place units on top of each other, otherwise
damage could occur.
BACK PANEL
The figure below shows the back panel of the device.
Power ON
Press the power button to the OFF position (OUT). Connect the power adapter to the
power port. Attach the power adapter to a wall outlet or other AC source. Press the
power button to the ON position (IN). If the Power LED displays as expected then
the device is ready for setup (see section 2.2 LED Indicators).
Caution 1: If the device fails to power up, or it malfunctions, first verify that the
power cords are connected securely and then power it on again. If the
problem persists, contact technical support.
Caution 2: Before servicing or disassembling this equipment, disconnect all power
cords and telephone lines from their outlets.
Reset Button
Restore the default parameters of the device by pressing the Reset button for 10
seconds. After the device has rebooted successfully, the front panel should display
as expected (see section 2.2 LED Indicators for details).
NOTE: If pressed down for more than 60 seconds, the VR-3031u will go into a
firmware update state (CFE boot mode). The firmware can then be
updated using an Internet browser pointed to the default IP address.

7
WPS/WiFi Button
Press and release WPS-WiFi button to activate WPS (make sure the WPS is enabled
in Wireless->Security page).
Press and hold WPS-WIFI button more than 5 seconds to enable/disable WiFi.
Ethernet (LAN) Ports
Use 10/100 BASE-T RJ-45 cables to connect up to four network devices. These ports
are auto-sensing MDI/X; so either straight-through or crossover cable can be used.
USB Host Port (Type A)
This port can be used to connect the router to the print server.
DSL Port
Connect to an ADSL2/2+ or VDSL with this RJ11 Port. This device contains a micro
filter which removes the analog phone signal. If you wish, you can connect a
regular telephone to the same line by using a POTS splitter.

8
2.2 LED Indicators
The front panel LED indicators are shown below and explained in the following table.
This information can be used to check the status of the device and its connections.
LED
Color
Mode
Function
POWER
Green
On
The device is powered up.
Off
The device is powered down.
Red On
POST (Power On Self Test) failure or other
malfunction. A malfunction is any error of internal
sequence or state that will prevent the device from
connecting to the DSLAM or passing customer data.
ETH 1 to 4 Green
On
An Ethernet Link is established.
Off
An Ethernet Link is not established.
Blink
Data transmitting or receiving over LAN.
WLAN Green
On
The wireless module is ready.
(i.e. installed and enabled).
Off
The wireless module is not ready.
(i.e. either not installed or disabled).
Blink
Data transmitting or receiving over WLAN.
WPS Green
On
WPS enabled and PC connected to WLAN.
Off
WPS disenabled when WPS configured.
After clients are connected to router for about 5
minutes, LED is OFF.
Blink
The router is searching for WPS clients or WPS is
un-configured.
USB Green
On
USB mass storage, USB hub or USB printer is
connected; or 3G USB dongle connection is UP.
Off
No USB device connected.
Red
On
3G USB dongle attached, 3G connection is DOWN.
DSL Green
On
xDSL Link is established.
Off
xDSL Link is not established.
Blink
fast: xDSL Link is training or data transmitting.
slow: xDSL training failed.
INTERNET Green
On
IP connected and no traffic detected. If an IP or
PPPoE session is dropped due to an idle timeout, the
light will remain green if an ADSL connection is still
present.

9
Off
Modem power off, modem in bridged mode or ADSL
connection not present. In addition, if an IP or
PPPoE session is dropped for any reason, other than
an idle timeout, the light is turned off.
Blink
IP connected and IP Traffic is passing thru the device
(either direction)
Red On
Device attempted to become IP connected and failed
(no DHCP response, no PPPoE response, PPPoE
authentication failed, no IP address from IPCP, etc.)

10
Chapter 3 Web User Interface
This section describes how to access the device via the web user interface (WUI)
using an Internet browser such as Internet Explorer (version 5.0 and later).
3.1 Default Settings
The factory default settings of this device are summarized below.
• LAN IP address: 192.168.1.1
• LAN subnet mask: 255.255.255.0
• Administrative access (username: admin, password: as created in your wizard)
See section 3.3 Wizard Setup for details
• Remote access (username: admin, password: as created in your wizard)
• WLAN access: enabled
Technical Note
During power on, the device initializes all settings to default values. It will then
read the configuration profile from the permanent storage section of flash memory.
The default attributes are overwritten when identical attributes with different values
are configured. The configuration profile in permanent storage can be created via
the web user interface or telnet user interface, or other management protocols.
The factory default configuration can be restored either by pushing the reset button
for more than ten seconds until the power indicates LED blinking or by clicking the
Restore Default Configuration option in the Restore Settings screen.

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3.2 IP Configuration
DHCP MODE
When the VR-3031u powers up, the onboard DHCP server will switch on. Basically,
the DHCP server issues and reserves IP addresses for LAN devices, such as your PC.
To obtain an IP address from the DCHP server, follow the steps provided below.
NOTE: The following procedure assumes you are running Windows XP.
However, the general steps involved are similar for most operating
systems (OS). Check your OS support documentation for further details.
STEP 1: From the Network Connections window, open Local Area Connection (You
may also access this screen by double-clicking the Local Area Connection
icon on your taskbar). Click the Properties button.
STEP 2: Select Internet Protocol (TCP/IP) and click the Properties button.
STEP 3: Select Obtain an IP address automatically as shown below.
STEP 4: Click OK to submit these settings.
If you experience difficulty with DHCP mode, you can try static IP mode instead.

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STATIC IP MODE
In static IP mode, you assign IP settings to your PC manually.
Follow these steps to configure your PC IP address to use subnet 192.168.1.x.
NOTE: The following procedure assumes you are running Windows XP.
However, the general steps involved are similar for most operating
systems (OS). Check your OS support documentation for further details.
STEP 1: From the Network Connections window, open Local Area Connection (You
may also access this screen by double-clicking the Local Area Connection
icon on your taskbar). Click the Properties button.
STEP 2: Select Internet Protocol (TCP/IP) and click the Properties button.
STEP 3: Change the IP address to the 192.168.1.x (1<x<255) subnet with subnet
mask of 255.255.255.0. The screen should now display as shown below.
STEP 4: Click OK to submit these settings.

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3.3 Wizard Setup
After starting the Wizard you will be brought to the Welcome page. Click the
Continue button.

14
Set new login password and click the Continue button. The new password must have
a minimum of 6 characters and a maximum of 16. Letters or numbers can be used.
Passwords with characters repeated more than 2 times such as 111 or eee for
example are not permitted.

15
If there is no DSL connection, the following page will pop up to inform you. (For
reference)

16
Input the Username and Password as provided by your ISP (Internet Service
Provider). Click the Continue button.

17
This page informs you that the settings are being saved.

18
If the wrong Username and/or Password are used the following page will pop up to
inform you. (For reference)

19
Upon Username and Password authentication, you will be asked to set a new WiFi
Password. Input the new Password and click the Continue button. The new
password must have a minimum of 8 characters and a maximum of 64.