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User Manual

Nighthawk® 2.5Gbps Cable Modem

Model CM3000

NETGEAR, Inc.
350 E. Plumeria Drive

January 2022

San Jose, CA 95134, USA

202-xxxxx-01

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Summary of Contents for Nighthawk CM3000

Page 1: ...User Manual Nighthawk 2 5Gbps Cable Modem Model CM3000 NETGEAR Inc 350 E Plumeria Drive January 2022 San Jose CA 95134 USA 202 xxxxx 01 ...

Page 2: ...trademarks are used for reference purposes only Compliance and Conformity For regulatory compliance information visit https www netgear com about regulatory See the regulatory compliance document before connecting the power supply Note to CATV system Installer This reminder is provided to call the CATV systems installer s attention to Section 820 93 of the National Electrical Code which provide gu...

Page 3: ... logs 16 Specify the cable connection starting frequency 17 Ethernet Port Aggregation 17 Set Up Ethernet Port Aggregation 18 View the Ethernet Port Aggregation Status 18 Change the Ethernet Port Aggregation Configuration Mode 19 Reboot the cable modem 19 Reset the cable modem to factory default settings 20 Use the reset button on the back panel 21 Use the factory reset software button 21 Chapter 3...

Page 4: ...vers 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 4 ...

Page 5: ...ovides 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 User Manual 5 Hardware Setup Nighthawk CM3000 2 5 Gbps Cable Modem ...

Page 6: ...pstream channel is locked Upstream Solid white The cable modem is online Blinking white The cable modem is synchronizing with the cable provider s cable modem termination system CMTS Off The cable modem is offline Online Solid blue A 2 5 Gbps connection is established Blinking blue The port is sending or receiving traffic at 2 5 Gbps Solid white A 1 Gbps connection is established Blinking white Th...

Page 7: ...white and the cable modem returns to its factory settings Multi Gig LAN Ethernet port For installation and activation connect a computer to the Ethernet port After you install your cable modem and activate your Internet service you can disconnect your computer and connect a router to the Ethernet port Aggregate Ethernet ports If a device supports Ethernet aggregation like a NAS or managed network ...

Page 8: ...the product package to the DC power connector Label The cable modem label shows the login information MAC address and serial number Figure 3 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 User Manual 8 Har...

Page 9: ...t service you can disconnect the computer and connect a router to the cable modem To connect your cable modem directly to a computer 1 Turn off and disconnect existing modems and routers If you are replacing a modem that is currently connected in your home unplug the modem and plug the new cable modem into the same outlet 2 Connect a coaxial cable Use a coaxial cable to connect the cable port on t...

Page 10: ...t the cable outlet is working or call your Internet service provider ISP to make sure you have service Note When the Online LED lights solid your cable modem is not connected to the Internet yet You must connect a router or computer to your cable modem and then activate your cable modem with your cable Internet provider 5 Connect a router to your cable modem a Connect the LAN port on the cable mod...

Page 11: ...n the cable modem label See Label on page 8 Cable modem MAC address which is on the cable modem label See Label on page 8 The following is contact information for cable Internet providers that support your cable modem Table 2 Cable Internet provider contact information Contact Information Cable Internet Provider https cox com activate 1 888 556 1193 Cox https support mediacomcable com 1 855 Mediac...

Page 12: ...ur Internet service 1 Visit your cable Internet provider s website and follow the onscreen instructions to activate your Internet service 2 If you are unable to activate your Internet service using the instructions on your cable Internet provider s website call your cable Internet provider for support 3 Perform an Internet speed test to verify that you are receiving the subscribed data rate Perfor...

Page 13: ...r includes the following sections Log in to the cable modem Change the admin password View cable modem initialization View cable modem status View and clear event logs Specify the cable connection starting frequency Ethernet Port Aggregation Set Up Ethernet Port Aggregation View the Ethernet Port Aggregation Status Change the Ethernet Port Aggregation Configuration Mode Reboot the cable modem Rese...

Page 14: ... page displays Change the admin password You can change the default password that is used to log in to the cable modem with the admin user name Note Be sure to change the password for the user name admin to a secure password The ideal password contains no dictionary words from any language and contains uppercase and lowercase letters numbers and symbols It must be at least 6 and up to 32 character...

Page 15: ...he Internet To view the status of the cable modem initialization 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 Select Cable Con...

Page 16: ...odem events To view and clear the event logs 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 Select ADVANCED Administration Event...

Page 17: ...sensitive The BASIC Home page displays 4 Select Cable Connection The Cable Connection page displays the status of all downstream and upstream channels 5 In the Starting Frequency field type a number as instructed by your cable Internet provider 6 Click the Apply button Your settings are saved Ethernet Port Aggregation Ethernet aggregation lets you use the LAN 1 and 2 ports on your cable modem to i...

Page 18: ...r 2 Connect the Ethernet ports on your router or computer that support Ethernet port aggregation to the LAN 1 and 2 ports on your cable modem For information about viewing your cable modem s Ethernet port aggregation status see View the Ethernet Port Aggregation Status on page 18 View the Ethernet Port Aggregation Status To view your cable modem s Ethernet port aggregation status 1 Launch a web br...

Page 19: ...rt if you select this mode Enable LACP IEEE 803 3ad The cable modem communicates with the router or computer that is connected to the LAN 2 port on your cable modem and checks to see if Ethernet port aggregation is supported on the router or computer If Ethernet port aggregation is supported the cable modem automatically trunks the LAN 2 port If not the LAN 2 port will not pass traffic Reboot the ...

Page 20: ...fault 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 However if you changed the default password that you use to access the cable modem and lost the password you must use the Reset button on the back panel After you reset the cable modem to factory default settings the passw...

Page 21: ... 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 The ADVANCED Home page displays 5 Click the Factory reset...

Page 22: ...This chapter provides information about troubleshooting your cable modem The chapter includes the following sections Use LEDs to Troubleshoot Cannot log in to the cable modem Troubleshoot the cable internet connection 22 ...

Page 23: ...Use LEDs to Troubleshoot The following table provides help when you are using the LEDs for troubleshooting User Manual 23 Troubleshooting Nighthawk CM3000 2 5 Gbps Cable Modem ...

Page 24: ... or computer Be sure that you are using the correct cable The Ethernet LED is off for a port with an Ethernet connection Make sure that the coaxial cable connections are secure at the cable modem and at the wall jack Make sure that your Internet service provider provisioned your cable Internet service Your ISP can verify that the signal quality is good enough for cable modem service Remove any exc...

Page 25: ...computer s IP address is on the same subnet as the cable modem The IP address of your computer must be in the range of 192 168 100 2 to 192 168 100 254 If your cable modem does not save changes you made do the following When entering configuration settings be sure to click the Apply button before moving to another page or your changes are lost Click the Refresh or Reload button in the web browser ...

Page 26: ...4 Supplemental Information This appendix covers the following topics Factory Settings Technical Specifications 26 ...

Page 27: ...L Cable modem login admin User name case sensitive Printed on the product label Login password case sensitive Use default hardware address Cable modem MAC address Internet connection AutoSensing Port speed Technical Specifications The following table lists the technical specifications for the cable modem User Manual 27 Supplemental Information Nighthawk CM3000 2 5 Gbps Cable Modem ...

Page 28: ...maximum relative humidity noncondensing Environmental Local one 2 5 Gbps RJ 45 Gigabit Ethernet port Aggregate Two aggregated 1 Gigabit RJ 45 Ethernet ports Internet Coaxial cable connector DOCSIS 3 1 backward compatible with DOCSIS 3 0 Interface 2 OFDM and 32 SC QAM bonded downstream 2 OFDMA and 8 SC QAM bonded upstream Channels CableLabs certified for U S cable internet services FCC UL Certifica...

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