User Manual Nighthawk Multi-Gig Speed Cable Modem Model CM1200 December 2018 202-11964-01 NETGEAR, Inc. 350 E.
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Contents Chapter 1 Hardware Setup Unpack Your Cable Modem................................................................6 Front Panel and LEDs...........................................................................7 Rear Panel..............................................................................................8 Label.....................................................................................................10 System Requirements.........................................................
Nighthawk Multi-Gig Speed Cable Modem Technical Specifications.....................................................................
1 Hardware Setup This chapter covers the following topics: • • • • • • Unpack Your Cable Modem Front Panel and LEDs Rear Panel Label System Requirements Install and Activate Your Cable Modem For more information about the topics covered in this manual, visit the support website at support.netgear.com.
Nighthawk Multi-Gig Speed Cable Modem Unpack Your Cable Modem Your package contains the following items. 1 Figure 1. Package contents 1. High Speed Cable Modem 2. Ethernet cable 3.
Nighthawk Multi-Gig Speed Cable Modem Front Panel and LEDs The cable modem provides status LEDs on the front. Figure 2. Front panel You can use the LEDs to verify status and connections. The following table lists and describes each LED on the cable modem.
Nighthawk Multi-Gig Speed Cable Modem Table 1. LED descriptions LED Icon Power Description • Solid green. Power is supplied to the cable modem. • Off. No power is supplied to the cable modem. • Solid red. The cable modem is too warm and might overheat. For more information about this condition, see Use LEDs to Troubleshoot on page 25. Downstream • Solid amber. One downstream channel is locked. • Solid green. Two or more downstream channels are locked. • Blinking green.
Nighthawk Multi-Gig Speed Cable Modem The connections and button on the rear panel are shown in the following figure. Figure 3. Rear panel Viewed from top to bottom, the back panel contains the following components: • Reset button. Pressing the Reset button resets the cable modem. If the Reset button is pressed for at least seven seconds, the Power LED blinks green and the cable modem returns to its factory settings. • LAN ports. For installation and activation, connect a computer to the LAN 1 port.
Nighthawk Multi-Gig Speed Cable Modem Label The cable modem label shows the login information, MAC address, and serial number. Figure 4. Cable modem label System Requirements You need the following to install your cable modem: • • • Compatible operating system: - Windows 10 - Windows 8 - Windows 7 - Windows Vista - Windows XP - Windows 2000 - Mac OS - Other operating systems running a TCP/IP network Compatible web browser: - Microsoft Internet Explorer 5.0 or later - Firefox 2.
Nighthawk Multi-Gig Speed Cable Modem Install and Activate Your Cable Modem The cable modem provides a connection between your cable Internet provider’s network and your computer, router, or WiFi router. Connect Your Cable Modem to a Computer After you install the cable modem and activate your Internet service, you can disconnect the computer and connect a router to the cable modem. Figure 5. Connect your cable modem to a computer To connect your cable modem directly to a computer: 1.
Nighthawk Multi-Gig Speed Cable Modem Use the Ethernet cable that is provided in the package to connect a computer to the Ethernet port on the cable modem. Note: Your cable modem comes with a plug that covers the LAN 2, 3, and 4 ports. You can remove the plug to connect a router that supports Ethernet port aggregation. For more information, see the cable modem’s user manual. 6. Reboot the computer. 7. Activate your Internet service.
Nighthawk Multi-Gig Speed Cable Modem Table 2. Cable Internet provider contact information Cable Internet Provider Contact Information CableOne http://www.cableone.net/ 1-877-MY-CABLE (1-877-692-2253) Cox https://cox.com/activate 1-800-234-3993 Mediacom https://maestro.mediacomcc.com/walledgarden/page/login.jsp 1-855-Mediacom (1-855-633-4226) Optimum https://install.optimum.com/JointInstall/ 1-877-810-6750 Spectrum https://activate.spectrum.net/ 1-833-267-6094 Xfinity https://xfinity.
Nighthawk Multi-Gig Speed Cable Modem Connect Your Cable Modem to a Router After Installation and Activation After you install the cable modem and activate your Internet service, you can disconnect the computer and connect a router to the cable modem. Figure 7. Connect the cable modem to a router To connect your cable modem to a router after installation and activation: 1. Reboot the cable modem by unplugging the power cable from the cable modem and plugging it back in.
2 Manage Your Network After you set up the cable modem, you do not need to log in to the cable modem for normal operation. However, you can log in to the cable modem to change a very limited number of settings and monitor the cable modem.
Nighthawk Multi-Gig Speed Cable Modem Log In to the Cable Modem To log in to the cable modem: 1. Connect a computer to your cable modem. You can connect a computer to your cable modem using the following methods: • Connect a computer to your cable modem using an Ethernet connection. • Connect a WiFi router to your cable modem using an Ethernet connection, and then connect a computer to your router using a WiFi or Ethernet connection. 2. Launch a web browser. 3. Enter http://192.168.100.1.
Nighthawk Multi-Gig Speed Cable Modem 4. Select ADVANCED > Administration > Set Password. The Set Password page displays. 5. Type the old password, and type the new password twice. 6. Click the Apply button. Your settings are saved. View Cable Modem Initialization You can track the initialization procedure of the cable modem and get details about the downstream and upstream cable channel. The time is displayed after the cable modem is initialized.
Nighthawk Multi-Gig Speed Cable Modem View Cable Modem Status To view cable modem status and usage information: 1. Launch a web browser from a computer that is connected to your cable modem. 2. Enter http://192.168.100.1. A login window opens. 3. Enter the admin user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home page displays. 4. Click the ADVANCED tab.
Nighthawk Multi-Gig Speed Cable Modem 6. To clear the log entries, click the Clear Log button. Specify the Cable Connection Starting Frequency The starting frequency is automatically generated. For most Internet connections, you do not need to specify this information. If you must enter a starting frequency, contact your Internet provider. To change the starting frequency: 1. Launch a web browser from a computer that is connected to your cable modem. 2. Enter http://192.168.100.1. A login window opens. 3.
Nighthawk Multi-Gig Speed Cable Modem To set up Ethernet port aggregation with your cable modem, you need the following: • A service provider that offers an Internet speed that's over 1 Gbps. • A router or computer that supports the following: - 802.3ad LACP - Ethernet port aggregation on its WAN ports Warning: To avoid causing broadcast looping, which can shut down your network, do not connect an unmanaged switch to the LAN 1 and 2 port on your cable modem.
Nighthawk Multi-Gig Speed Cable Modem Change the Ethernet Port Aggregation Configuration Mode To change your cable modem's Ethernet port aggregation configuration mode: 1. Launch a web browser from a computer that is connected to your cable modem. 2. Enter http://192.168.100.1. A login window opens. 3. Enter the admin user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home page displays. 4.
Nighthawk Multi-Gig Speed Cable Modem The BASIC Home page displays. 4. Click the ADVANCED tab. The ADVANCED Home page displays. 5. Click the Reboot button. A confirmation message displays. 6. Click the OK button. The cable modem reboots. Reset the Cable Modem to Factory Default Settings To reset the cable modem to factory default settings, you can use either the Reset button on the back panel of the cable modem or the Factory reset software button.
Nighthawk Multi-Gig Speed Cable Modem Use the Reset Button on the Back Panel Caution: This process erases all settings that you configured in the cable modem. To reset the cable modem to factory default settings using the Reset button: 1. On the back of the cable modem, locate the Reset button. 2. Using a straightened paper clip, press and hold the Reset button until the cable modem reboots itself. The configuration is reset to factory default settings. This process takes about one minute.
3 Troubleshooting This chapter provides information about troubleshooting your cable modem.
Nighthawk Multi-Gig Speed Cable Modem Use LEDs to Troubleshoot The following table provides help when you are using the LEDs for troubleshooting.
Nighthawk Multi-Gig Speed Cable Modem Table 3. Troubleshooting with LEDs LED Behavior Action All LEDs are off when the cable modem is plugged in. • Make sure that the power adapter is securely connected to your cable modem and a functioning power outlet. • Check that you are using the 12 VDC, 1.5 A power adapter from NETGEAR for this product. • If the error persists, a hardware problem occurred. Contact technical support. All LEDs stay on.
Nighthawk Multi-Gig Speed Cable Modem Cannot Log In to the Cable Modem If you cannot access your cable modem from a computer that is connected to your cable modem or to a router that is connected your cable modem, check the following: • If your computer is connected to your cable modem with an Ethernet cable, check the connection. • Make sure that Java, JavaScript, or ActiveX is enabled in your browser.
4 Supplemental Information This appendix covers the following topics: • • Factory Settings Technical Specifications 28
Nighthawk Multi-Gig Speed Cable Modem Factory Settings The following table shows the factory default settings for the cable modem. Table 4. Factory default settings Feature Cable modem login Internet connection Default Setting User login URL http://192.168.100.
Nighthawk Multi-Gig Speed Cable Modem Table 5. Technical specifications Feature Specification Power adapter • Input: 110–120V, 47–60 Hz • Output: 12 VDC, 1.5 A Physical specifications • Dimensions: 6.1 x 3.4 x 10.3 in. (155 x 87 x 261 mm) • Weight: 1.
