User Manual Nighthawk® 2.5Gbps Multi-Gig Speed Cable Modem Model CM2000 May 2020 202-12065-01 NETGEAR, Inc. 350 E.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem Support Thank you for purchasing this NETGEAR product. You can visit https://www.netgear.com/support/ to register your product, get help, access the latest downloads and user manuals, and join our community. We recommend that you use only official NETGEAR support resources. Contact your Internet service provider for technical support. Trademarks ©NETGEAR, Inc. NETGEAR and the NETGEAR Logo are trademarks of NETGEAR, Inc.
Contents Chapter 1 Hardware Setup Front Panel and LEDs...........................................................................5 Rear Panel..............................................................................................6 Label.......................................................................................................8 System Requirements...........................................................................8 Install and Activate Your Cable Modem...............................
1 Hardware Setup This chapter covers the following topics: • • • • • 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 CM2000 2.5 Gbps Ultra-High Speed Cable Modem Front Panel and LEDs The cable modem provides status LEDs on the front. Figure 1. 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 CM2000 2.5 Gbps Ultra-High Speed Cable Modem Table 1. LED descriptions LED Icon Power Description • Solid white. 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 21. Downstream • Solid amber. One downstream channel is locked. • Solid white. Two or more downstream channels are locked. • Blinking white.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem Figure 2. 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 white and the cable modem returns to its factory settings. • Ethernet port. For installation and activation, connect a computer to the Ethernet port.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem • Coaxial cable port. Connect the cable port to a cable wall outlet. • DC power connector. Connect the power adapter that came in the product package to the DC power connector. Label The cable modem label shows the login information, MAC address, and serial number. Figure 3.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem • - Safari 1.4 or later - Google Chrome 11.0 or later Cable broadband Internet service 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.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem Note: After you install and activate the cable modem, you can disconnect the computer and connect a router to the cable modem. For more information, see Connect Your Cable Modem to a Router After Installation and Activation on page 11.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem Table 2. Cable Internet provider contact information (Continued) Cable Internet Provider Contact Information Spectrum https://activate.spectrum.net/ 1-833-267-6094 Xfinity https://xfinity.com/activate/ https://www.xfinity.com/support/internet/activate-purchased-modem/ 1-800-XFINITY (1-800-934-6489) Note: Your cable Internet provider’s contact information might change.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem 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. Wait for the Internet LED to stop blinking and light solid white. 2. Use an Ethernet cable to connect the Ethernet port on the cable modem to the WAN or Internet port on the router. 3. Power on the router. 4. Wait until the router is ready. 5. Connect a computer to the router.
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 CM2000 2.5 Gbps Ultra-High 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.
Nighthawk CM2000 2.5 Gbps Ultra-High 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 CM2000 2.5 Gbps Ultra-High 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 printed on the product label. The user name and password are case-sensitive. The BASIC Home page displays. 4. Click the ADVANCED tab.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem 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. Enter the admin user name and password.
Nighthawk CM2000 2.5 Gbps Ultra-High Speed Cable Modem 3. Enter the admin user name and password. The user name is admin. The default password is printed on the product label. The user name and password are case-sensitive. 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.
Nighthawk CM2000 2.5 Gbps Ultra-High 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 CM2000 2.5 Gbps Ultra-High Speed Cable Modem Use LEDs to Troubleshoot The following table provides help when you are using the LEDs for troubleshooting.
Nighthawk CM2000 2.5 Gbps Ultra-High 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 CM2000 2.5 Gbps Ultra-High 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 24
Nighthawk CM2000 2.5 Gbps Ultra-High 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 CM2000 2.5 Gbps Ultra-High 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: (W X D X H) 6.8 x 3.7 x 8.2 in. (172 x 94 x 208 mm) • Weight: 1.02 lb (482 g) Environmental • Operating temperature: 32° to 104°F (0° to 40°C) • Operating humidity: 90% maximum relative humidity, noncondensing Interface • Local: one 2.
