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Troubleshooting

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

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Содержание Nighthawk CM1200

Страница 1: ...User Manual Nighthawk Multi Gig Speed Cable Modem Model CM1200 NETGEAR Inc 350 E Plumeria Drive December 2018 San Jose CA 95134 USA 202 11964 01...

Страница 2: ...rademarks 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 befor...

Страница 3: ...Initialization 17 View Cable Modem Status 18 View and Clear Event Logs 18 Specify the Cable Connection Starting Frequency 19 Ethernet Port Aggregation 19 Set Up Ethernet Port Aggregation 20 View the E...

Страница 4: ...Technical Specifications 29 4 Nighthawk Multi Gig Speed Cable Modem...

Страница 5: ...owing 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...

Страница 6: ...ur Cable Modem Your package contains the following items 1 Figure 1 Package contents 1 High Speed Cable Modem 2 Ethernet cable 3 Power adapter User Manual 6 Hardware Setup Nighthawk Multi Gig Speed Ca...

Страница 7: ...vides 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 User Manual 7 Hardware Set...

Страница 8: ...stream channel is locked Solid green Two or more upstream channels are locked Blinking green The cable modem is scanning for an upstream channel Off No upstream channel is locked Upstream Solid green...

Страница 9: ...nnect a computer to the LAN 1 port After you install the cable modem and activate your Internet service you can disconnect the computer and connect a router to this port You can use the LAN 2 port to...

Страница 10: ...ompatible 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 Explor...

Страница 11: ...nnected 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 the cable modem to a cable wall outle...

Страница 12: ...ctivate 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...

Страница 13: ...ervice billing statement To activate your 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...

Страница 14: ...boot 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 green 2 Use an Ethernet cable to connect the...

Страница 15: ...mited number of settings and monitor the cable modem This chapter includes the following sections Log In to the Cable Modem Change the admin Password View Cable Modem Initialization View Cable Modem S...

Страница 16: ...IC Home 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...

Страница 17: ...ects to the 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...

Страница 18: ...capture important cable modem 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 En...

Страница 19: ...ssword are case 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...

Страница 20: ...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 p...

Страница 21: ...nicates 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 aggre...

Страница 22: ...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 th...

Страница 23: ...re button 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 T...

Страница 24: ...his 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 Int...

Страница 25: ...Use LEDs to Troubleshoot The following table provides help when you are using the LEDs for troubleshooting User Manual 25 Troubleshooting Nighthawk Multi Gig Speed Cable Modem...

Страница 26: ...he 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 provi...

Страница 27: ...Make sure that your 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 no...

Страница 28: ...4 Supplemental Information This appendix covers the following topics Factory Settings Technical Specifications 28...

Страница 29: ...login admin User name case sensitive password Login password case sensitive Use default hardware address Cable modem MAC address Internet connection AutoSensing Port speed Disabled by default Ethernet...

Страница 30: ...e 32 to 104 F 0 to 40 C Operating humidity 90 maximum relative humidity noncondensing Environmental Local Four 10 100 1000 RJ 45 Gigabit Ethernet ports Internet Coaxial cable connector DOCSIS 3 1 back...

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