Motorola MG7550 User manual

MG7550
16x4 DOCSIS 3.0 Cable
Modem plus AC1900 Router
User Manual
VER: 1.0

MG7550 Cable Modem User Manual
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Contents
1Safety Precautions.............................................................................................1
2Overview............................................................................................................2
2.1Application.............................................................................................2
2.2Features ................................................................................................2
2.3Standards Compatibility and Compliance..............................................3
3Hardware Description and Hardware Installation...............................................4
3.1Hardware Description............................................................................4
3.1.1Front Panel.................................................................................4
3.1.2Rear Panel..................................................................................5
3.2Hardware Installation.............................................................................6
3.2.1Connecting the Device ...............................................................6
4PC Network Configuration and Login.................................................................7
4.1PC Network Configuration.....................................................................7
4.2Logging In to the MG7550 Cable Modem .............................................9
5Web-Based Management ................................................................................11
5.1Status...................................................................................................11
5.1.1Software.................................................................................... 11
5.1.2Connection................................................................................12
5.1.3Diagnostics...............................................................................14
5.1.4Security.....................................................................................15
5.1.5Event Log..................................................................................16
5.2Basic Router........................................................................................16
5.2.1Setup ........................................................................................16
5.2.2DHCP........................................................................................18
5.2.3DHCPv6....................................................................................20
5.2.4LAN IPv6...................................................................................21
5.2.5DDNS........................................................................................21
5.2.6Backup/Restore........................................................................22
5.3Advanced Router.................................................................................23
5.3.1Options .....................................................................................23
5.3.2IP Filtering.................................................................................25
5.3.3MAC Filtering............................................................................26
5.3.4Port Filtering .............................................................................26
5.3.5Forwarding................................................................................27

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5.3.6Port Triggers.............................................................................29
5.3.7RIP Setup .................................................................................29
5.3.8DMZ Host..................................................................................32
5.4Wireless...............................................................................................33
5.4.1Basic.........................................................................................33
5.4.2Radio ........................................................................................35
5.4.3WPS_RADIUS_WEP................................................................35
5.4.4Guest........................................................................................38
5.4.5Access......................................................................................39
5.4.6Advanced..................................................................................41
5.4.7WMM ........................................................................................45
5.4.8Scan/Bridging ...........................................................................47
5.5Protection & Parental Control..............................................................47
5.5.1Firewall Basic............................................................................48
5.5.2Event Log..................................................................................49
5.5.3Parental Control........................................................................50
5.6VPN.....................................................................................................51
5.6.1IPSec........................................................................................51
5.6.2L2TP/PPTP...............................................................................52
5.6.3Event Log..................................................................................53
5.7Logout..................................................................................................54
6Q&A..................................................................................................................55

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1 Safety Precautions
Read the following information carefully before operating the device. Please follow
the following precaution items to protect the device from risks and damage caused
by fire and electric power:
Use volume labels to mark the type of power.
Use the power adapter that is packed within the device package.
Pay attention to the power load of the outlet or prolonged lines. An
overburden power outlet or damaged lines and plugs may cause electric
shock or fire accident. Check the power cords regularly. If you find any
damage, replace it at once.
Proper space left for heat dissipation is necessary to avoid any damage
caused by overheating to the device. The holes on the device are designed
for heat dissipation to ensure that the device works normally. Do not cover
these heat dissipation holes.
Do not put this device close to a place where a heat source exits or high
temperature occurs. Avoid the device from direct sunshine.
Do not put this device close to a place where is over damp or watery. Do not
spill any fluid on this device.
Do not connect this device to any PC or electronic product, unless our
customer engineer or your broadband provider instructs you to do this,
because any wrong connection may cause any power or fire risk.
Do not place this device on an unstable surface or support.
The screen of the coaxial cable is intended to be connected to earth in the
building installation.

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2 Overview
The MG7550 is targeted towards DOCSIS3.0 cable modem and gateway. With
sixteen downstream channels and four upstream channels, it supports up to
600Mbs/160Mbs.The MG7550 incorporates a variety of industry standard
peripheral interfaces including dual IEEE802.3 10/100/1000Mbps interface, one
with integrated GPHY. The MG7550 supports WLAN access. It complies with IEEE
802.11,802.11b/g,802.11n and 802.11ac specifications, WEP, WPA, and WPA2
security specifications. The WLAN of the MG7550 supports 3T3R.
2.1 Application
Home gateway
SOHOs
Small enterprises
Higher data rate broadband sharing
Audio and video streaming and transfer
PC file and application sharing
Network and online gaming
2.2 Features
User-friendly GUI for web configuration
Several pre-configured popular games. Just enable the game and the port
settings are automatically configured.
Compatible with all standard Internet applications
WLAN with high-speed data transfer rates of up to 600 Mbps, compatible
with IEEE 802.11b/g/n/ac, 2.4GHz/5GHz compliant equipment
IP routing and bridging
Network/port address translation (NAT/PAT)
Wireless LAN security: WPA, 802.1x, RADIUS client
Universal plug-and-play(UPnP)

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File server for network attached storage (NAS) devices
Web filtering
Remote update
System statistics and monitoring
2.3 Standards Compatibility and Compliance
Support application level gateway (ALG)
DOCSIS3.0
IEEE 802.3
IEEE 802.3u
IEEE 802.11b
IEEE 802.11g
IEEE 802.11n
IEEE 802.11ac

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3 Hardware Description and Hardware Installation
3.1 Hardware Description
3.1.1 Front Panel
The following table describes the indicators on the front panel.
Indicator Color Status Description
Power Green On The device is powered on and the device
operates normally.
Off The device is powered off.
D/S
Green
On CM has locked D/S frequency
Blink CM scan D/S frequency
Off Device is powered off.
Blue
On CM has locked D/S channel bonding
Blink CM is on D/S channel bonding
Off Device is powered off.
U/S
Green
On CM has locked U/S frequency
Blink CM is range and scan U/S frequency
Off Device is powered off or CM scan D/S
frequency.
Blue
On CM has locked U/S channel bonding
Blink CM is on U/S channel bonding
Off Device is powered off or CM scan D/S
frequency.
Internet Green
On CM online.
Blink Catching the wan ip address.
Off Not connect.
Ethernet Green On The Ethernet interface is connected.

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Indicator Color Status Description
1/2/3/4 Blink Data is being transmitted through the
Ethernet interface.
Off The Ethernet interface is disconnected.
WLAN Green
On WLAN is enabled.
Blink Data is being transmitted through the
wireless interface.
Off WLAN is disabled.
WPS Green
On Connection succeeds under Wi-Fi
Protected Setup.
Blink Negotiation is in progress under Wi-Fi
Protected Setup.
Off Wi-Fi Protected Setup is disabled.
3.1.2 Rear Panel
The following table describes the interfaces or the buttons on the rear panel.
Interface Description
Antenna The antenna interface, for connecting the antennas.
Cable RF cable port, for connecting HFC cable.
Reset Press the button for at least 5 second and then release it. System
restores the factory default settings.
WPS Press the button for at least 5 second and then release it. WPS will
disabled/enabled.
WLAN Press the button for at least 3 second and then release it. Wireless
will disabled/enabled.
Eth 4~1 RJ-45 port, for connecting the router to a PC or another network
device.
Power Power interface, for connecting the power adapter.
Warning:

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Do not press the Reset button unless you want to clear the current settings. The
Reset button is in a small circular hole on the rear panel. If you want to restore the
default settings, please press the Reset button gently for 5 second with a fine needle
inserted into the hole and then release the button. The system reboots and returns to
the factory defaults.
3.2 Hardware Installation
3.2.1 Connecting the Device
Please follow the steps below to connect the device.
Step1 Connect the Cable port of the CM/RG with HFC cable.
Step2 Connect the Eth port of the CM/RG to the network card of the PC via an
Ethernet cable.
Step3 Plug one end of the power adapter to the wall outlet and connect the
other end to the Power port of the CM/RG.

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4 PC Network Configuration and Login
4.1 PC Network Configuration
Each network interface on the PC should either be configured with a statically defined
IP address and DNS address, or be instructed to automatically obtain an IP address
using the network DHCP server. MG7550 provides a DHCP server on its LAN and it
is recommended to configure your LAN to automatically obtain its IP address and
DNS server IP address.
The configuration principle is identical but should be carried out differently on each
operating system.
The following displays the TCP/IP Properties dialog box on Windows 7.

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Figure 1 IP and DNS configuration
TCP/IP configuration steps for Windows 7 are as follows:
Step1 Choose Start > Control Panel > Network Connections.
Step2 Right-click the Ethernet connection icon and choose Properties.
Step3 On the General tab, select the Internet Protocol (TCP/IP) component
and click Properties.

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Step4 The Internet Protocol (TCP/IP) Properties window appears.
Step5 Select the Obtain an IP address automatically radio button.
Step6 Select the Obtain DNS server address automatically radio button.
Step7 Click OK to save the settings.
4.2 Logging In to the MG7550 Cable Modem
To log in to the MG7550 cable modem, do as follows:
Step1 Open a Web browser on your computer.
Step2 Enter http://192.168.0.1 (the default IP address of the MG550 cable
modem) in the address bar. The login page appears.
Step3 Enter the user name and the password. The default Username is admin
and the Password is motorola.
Step4 Click Login to log in to the MG7550 cable Modem.

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Figure 2 Login page
After logging in to the MG7550 cable modem, it will show the CM Basic Status info.
click on the Advanced options you can query, configure, and modify all the settings,
and diagnose the system.

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5 Web-Based Management
This chapter describes how to use Web-based management of the Cable Modem,
which allows you to configure and control all of cable modem residential gateway
features and system parameters in a user-friendly GUI.
5.1 Status
Choose Status, and the submenus of Status are shown as below.
Figure 3 Submenus of status
5.1.1 Software
Choose Status > Software and the following page appears.
Figure 4 Software page
This page displays information about the hardware version, software version, MAC

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address, cable modem IP address,serial number and CM Certificate status.
5.1.2 Connection
Choose Status > Connection and the following page appears.

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Figure 5 Connection information
This page displays information about the RF upstream and downstream channels,
including downstream channel frequencies, upstream channel IDs, and upstream and
downstream signal power and modulation.
This page also displays IP lease information, including the current IP address of the
cable modem, the duration of both leases, the expiration time of both leases, and the
current system time from the DOCSIS timeserver.
The information on this page can be refreshed at any time by clicking your web
browser’s Refresh button.
5.1.3 Diagnostics
Choose Status > Diagnostics and the following page appears.
Figure 6 Diagnostic information
Two utilities are provided for troubleshooting network connectivity: Ping and
Traceroute.
Ping allows you to check connectivity between the CM/RG and devices on the LAN.

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Traceroute allows you to map the network path from the CM/RG to a public host.
Selecting Traceroute from the drop-down Utility list will present alternate controls for
the traceroute utility: To run either utility, make any changes to the default parameters
and select Start Test to begin. The window will automatically be refreshed as the
results are displayed in the Results table.
5.1.4 Security
Choose Status > Security and the following page appears.
Figure 7 Security configuration
Restore Factory Defaults:
Click this button to restore factory defaults. Note that you will lose any settings you
may have changed.
Note that you can also change the security password from this page by entering a
new password in both the New Password and Re-Enter New Password fields, and
the current password in the Current User ID Password field. Clicking Save will
change the password. You do NOT have to restore factory defaults to change the
password.

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5.1.5 Event Log
Choose Status > Event Log and the following page appears.
Figure 8 Event Log information
The Event Log displays information about your cable modem's connection to your
service provider. This information may be particularly helpful if you experience
problems with your connection.
5.2 Basic Router
Choose Basic Router and the submenus of Basic Router are shown as below.
Figure 9 Submenus of Basic Router
5.2.1 Setup
Choose Basic Router > Setup , and the following page appears.

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Figure 10 Setup configuration
Enter the information from the Required Information section as indicated:
At this point, the CM/RG is configured for basic use. To connect to the Internet, you
must do the following:
1. Power up the CM/RG and wait for it to register with the CMTS and obtain an
Internet-routable IP address
2. Get an IP lease from the internal DHCP server for each PC attached to the
CM/RG.
Note that communication on the LAN will work regardless of whether the WAN
connection provided by the cable modem is up. However, you will not be able to
access the Internet until the WAN connection is enabled and has an IP address.
Some configurations settings are retrieved only once from non-volatile storage
when the CM/RG first powers up. One such setting is changing the IPv4 Address
parameters. Any changes to these settings will force the CM/RG to reset so that
the new configuration can be read from non-volatile storage.
When this mandatory reset is required, the web interface will notify as follows: