Comtrend Corporation NexusLink 3112u User manual

NexusLink 3112u
Multi-DSL Bonded Router
User Manual
Version A1.1, June 04, 2014
261103-009

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©2014 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...........................................................................................................6
1.1 FEATURES........................................................................................................................................7
CHAPTER 2 INSTALLATION.............................................................................................................8
2.1 HARDWARE SETUP...........................................................................................................................8
2.2 HARDWARE SETUP...........................................................................................................................8
2.3 LED INDICATORS...........................................................................................................................10
CHAPTER 3 WEB USER INTERFACE............................................................................................12
3.1 DEFAULT SETTINGS .......................................................................................................................12
3.2 IP CONFIGURATION........................................................................................................................13
3.3 LOGIN PROCEDURE........................................................................................................................15
CHAPTER 4 DEVICE INFORMATION...........................................................................................17
4.1 WAN .............................................................................................................................................19
4.2 STATISTICS.....................................................................................................................................20
4.2.1 LAN Statistics..................................................................................................................20
4.2.2 WAN Service ...................................................................................................................21
4.2.3 XTM Statistics.................................................................................................................22
4.2.4 xDSL Statistics................................................................................................................23
4.3 ROUTE...........................................................................................................................................28
4.4ARP...............................................................................................................................................29
4.5 DHCP............................................................................................................................................29
4.6 NAT SESSION ................................................................................................................................31
4.7 IGMPPROXY ................................................................................................................................32
4.8 IPV6 ..............................................................................................................................................33
4.8.1 IPv6 Info................................................................................................................................33
4.8.2 IPv6 Neighbor .......................................................................................................................34
4.8.3 IPv6 Route.............................................................................................................................35
4.9 NETWORK MAP .............................................................................................................................36
4.10WIRELESS....................................................................................................................................37
4.10.1 Station Info ..........................................................................................................................37
4.10.2 Site Survey...........................................................................................................................38
CHAPTER 5 BASIC SETUP...............................................................................................................39
5.1 WAN SETUP ...................................................................................................................................40
5.1.1 WAN Service Setup ................................................................................................................41
5.2 NAT ..............................................................................................................................................42
5.2.1 Virtual Servers ................................................................................................................42
5.2.2 Port Triggering...............................................................................................................44
5.2.3 DMZ Host .......................................................................................................................46
5.2.4 IP Address Map ..............................................................................................................47
5.2.5 IPSEC ALG.....................................................................................................................49
5.2.6 SIP ALG..........................................................................................................................50
5.3 LAN..............................................................................................................................................51
5.3.1 LAN IPv6 Autoconfig.............................................................................................................54
5.3.2 Static IP Neighbor .................................................................................................................57
5.3.3 UPnP.....................................................................................................................................58
5.4 WIRELESS......................................................................................................................................59
5.4.1 Basic......................................................................................................................................59
5.4.2 Security..................................................................................................................................61
5.5 PARENTAL CONTROL......................................................................................................................64
5.5.1 Time Restriction..............................................................................................................64
5.5.2 URL Filter.......................................................................................................................65
5.6 HOME NETWORKING......................................................................................................................67
5.6.1 Print Server ...........................................................................................................................67
5.6.2 DLNA.....................................................................................................................................67
5.6.3 Storage Service......................................................................................................................68

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CHAPTER 6 ADVANCED SETUP.....................................................................................................69
6.1AUTO-DETECTION SETUP ...............................................................................................................69
6.2 SECURITY ......................................................................................................................................74
6.2.1 IP Filtering .....................................................................................................................74
6.2.2 MAC Filtering.................................................................................................................77
6.3 QUALITY OF SERVICE (QOS)..........................................................................................................79
6.3.1 QoS Queue Setup............................................................................................................80
6.3.2 QoS Policer ....................................................................................................................82
6.3.3 QoS Classification..........................................................................................................84
6.4 ROUTING .......................................................................................................................................86
6.4.1 Default Gateway.............................................................................................................86
6.4.2 Static Route.....................................................................................................................87
6.4.3 Policy Routing ................................................................................................................88
6.4.4 RIP..................................................................................................................................89
6.5 DNS..............................................................................................................................................90
6.5.1 DNS Server.....................................................................................................................90
6.5.2 Dynamic DNS .................................................................................................................91
6.5.3 DNS Entries....................................................................................................................92
6.5.4 DNS Proxy/Relay............................................................................................................93
6.6 DSL...............................................................................................................................................94
6.7 DSLBONDING...............................................................................................................................96
6.8 INTERFACE GROUPING...................................................................................................................97
6.9 IPTUNNEL...................................................................................................................................100
6.9.1 IPv6inIPv4...........................................................................................................................100
6.9.2 IPv4inIPv6...........................................................................................................................101
6.10 CERTIFICATE..............................................................................................................................102
6.10.1 Local.............................................................................................................................102
6.10.2 Trusted CA....................................................................................................................104
6.11 POWER MANAGEMENT ..............................................................................................................105
6.12 MULTICAST................................................................................................................................106
6.13WIRELESS..................................................................................................................................108
6.13.1 Basic..................................................................................................................................108
6.13.2 Security..............................................................................................................................110
6.13.3 WPS ...................................................................................................................................113
6.13.4 MAC Filter.........................................................................................................................114
6.13.5 Wireless Bridge..................................................................................................................116
6.13.6 Advanced ...........................................................................................................................117
CHAPTER 7 DIAGNOSTICS...........................................................................................................120
7.1 DIAGNOSTICS –INDIVIDUAL TESTS .............................................................................................120
7.2 FAULT MANAGEMENT..................................................................................................................121
7.3 UPTIME STATUS ...........................................................................................................................122
7.4 PING ............................................................................................................................................122
7.5 TRACE ROUTE .............................................................................................................................123
7.6 SYSTEM UTILIZATION..................................................................................................................124
CHAPTER 8 MANAGEMENT ........................................................................................................125
8.1 SETTINGS.....................................................................................................................................125
8.1.1 Backup Settings.............................................................................................................125
8.1.2 Update Settings.............................................................................................................126
8.1.3 Restore Default.............................................................................................................126
8.2 SYSTEM LOG ...............................................................................................................................127
8.3 SNMPAGENT .............................................................................................................................129
8.4 TR-069 CLIENT ...........................................................................................................................130
8.5 INTERNET TIME ...........................................................................................................................132
8.6ACCESS CONTROL .......................................................................................................................133
8.6.1 Passwords.........................................................................................................................133
8.6.2 Service Access...................................................................................................................135
8.6.3 IP Address.........................................................................................................................136
8.7 UPDATE SOFTWARE .....................................................................................................................137
8.8 REBOOT.......................................................................................................................................138