NETGEAR CM400 User Manual Download | Manualshive

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350 East Plumeria Drive
San Jose, CA 95134
USA

August 2014
202-11412-01

CM400 High Speed Cable Modem

User Manual

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Summary of Contents for CM400

Page 1: ...350 East Plumeria Drive San Jose CA 95134 USA August 2014 202 11412 01 CM400 High Speed Cable Modem User Manual ...

Page 2: ...it http support netgear com Phone US Canada only 1 888 NETGEAR Phone Other Countries Check the list of phone numbers at http support netgear com general contact default aspx Compliance For regulatory compliance information visit http www netgear com about regulatory See the regulatory compliance document before connecting the power supply Trademarks NETGEAR the NETGEAR logo and Connect with Innova...

Page 3: ...the Cable Connection Starting Frequency 12 View Cable Modem Initialization 13 View Cable Modem Status 14 View and CLear Event Logs 15 Change the admin Password 16 Reboot the Cable Modem 17 Reset the Cable Modem to Factory Default Settings 18 Use the Reset Button on the Back Panel 18 Use the Factory Reset Software Button 19 Chapter 3 Troubleshooting Use LEDs to Troubleshoot 22 Cannot Log In to the ...

Page 4: ...6 address assignment by cable Internet providers This chapter covers the following topics Unpack Your Cable Modem Front Panel Back Panel Product Label Attach the Feet Cable Your Cable Modem Contact Your Cable Internet Provider and Set Up Internet Service Note For more information about the topics covered in this manual visit the support website at http support netgear com 1 Maximum rate is derived...

Page 5: ... Your package contains the following items Ethernet cable Power adapter Cable modem Attachable feet Figure 1 Package contents Front Panel The cable modem provides status LEDs on the front Power LED Downstream LED Upstream LED Internet LED Ethernet LED Figure 2 Cable modem front view ...

Page 6: ...green One or more upstream channels are locked Blinking green The cable modem is scanning for an upstream channel Off No upstream channel is locked Internet Solid green The cable modem is online Blinking green The cable modem is synchronizing with the cable provider s cable modem termination system CMTS Off The cable modem is offline Ethernet Green A device is connected to the Ethernet port and po...

Page 7: ...t user name and default password Figure 4 Product label Attach the Feet The cable modem functions well in either a horizontal or vertical position If you prefer to place the cable modem in the upright vertical position attach the feet that come with the cable modem To attach the feet 1 Hold the cable modem in the upright position with the left side of the cable modem pointing down 2 Snap the feet ...

Page 8: ...harter is your cable Internet provider Charter recommends connecting your cable modem directly to a cable wall outlet If you must use a splitter use a splitter that is rated at 3 5 dBmv Note If Comcast Xfinity is your cable Internet provider Comcast Xfinity recommends connecting your cable modem directly to a cable wall outlet 2 Connect the power adapter provided in the package to the cable modem ...

Page 9: ...that you are using a new cable modem Note If Comcast Xfinity is your cable Internet provider you do not need to call Just launch a web browser You are redirected to the Xfinity self activation page on which you can enter your Xfinity credentials To set up your Internet connection 1 Contact your cable Internet provider and inform them that you are installing a new cable modem that you bought from a...

Page 10: ...ng on what your cable Internet provider tells you about your cable modem If the cable modem is not visible your cable Internet provider can give you instructions to verify why the cable modem does not connect with your high speed Internet service If the cable modem is visible to your cable Internet provider reboot the computer laptop router or WiFi router that is connected to the cable modem Try c...

Page 11: ...ation that you experience problems with the cable connection and cannot get an Internet connection technical support might ask you to log in to the router This chapter contains the following sections Log In to the Cable Modem Specify the Cable Connection Starting Frequency View Cable Modem Initialization View Cable Modem Status View and CLear Event Logs Change the admin Password Reboot the Cable M...

Page 12: ...in The default password is password The user name and password are case sensitive The BASIC Home screen displays Specify the Cable Connection Starting Frequency The starting frequency for the cable connection is automatically generated For most Internet connections you do not need to specify this information If you need to enter a starting frequency contact your Internet provider To change the sta...

Page 13: ...omatically goes through the following steps in the provisioning process 1 Scans and locks the downstream frequency and then ranges the upstream channels 2 Obtains a WAN IP address for the cable modem 3 Connects to the Internet To view the status of the cable modem initialization 1 Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer tha...

Page 14: ...nnels section displays the status of each channel 5 To see the Upstream Bonded Channels section and system time scroll down View Cable Modem Status You can view some basic information about the cable modem To view cable modem status 1 Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router that is attache...

Page 15: ...cable Internet provider For information about using the Reboot button see Reboot the Cable Modem on page 17 For information about using the Factory Reset button see Reset the Cable Modem to Factory Default Settings on page 18 View and CLear Event Logs Event logs capture important cable modem events To view and clear the event logs 1 Launch a web browser from a computer that is attached over an Eth...

Page 16: ...change the default password that is used to log in to the cable modem with the user name admin To change the password for the user name admin 1 Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router that is attached over an Ethernet cable to the cable modem 2 Type http 192 168 100 1 A login screen displa...

Page 17: ...a connection with the cable provider s network the devices reconnect to the cable modem s LAN To reboot the cable modem 1 Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router that is attached over an Ethernet cable to the cable modem 2 Type http 192 168 100 1 A login screen displays 3 Enter the cable m...

Page 18: ...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 user name is admin the password is password The LAN IP address is always 192 168 100 1 You cannot change this LAN IP address Use the Reset Button on the Back Panel CAUTION This process erases all settings that you configured in the cable mo...

Page 19: ... CAUTION This process erases all settings that you configured in the cable modem To erase the settings 1 Launch a web browser from a computer that is attached over an Ethernet cable to the cable modem or from a computer that is connected to a WiFi router that is attached over an Ethernet cable to the cable modem 2 Type http 192 168 100 1 A login screen displays 3 Enter the cable modem user name an...

Page 20: ...et to factory default settings When the reset is complete the cable modem reboots This process takes about one minute WARNING To avoid the risk of corrupting the firmware do not interrupt the reset For example do not close the browser click a link or load a new page Do not turn off the cable modem ...

Page 21: ...out 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 Note NETGEAR provides helpful articles and documentation at support netgear com ...

Page 22: ...ernet LED is off and the cable modem is connected to the cable wall jack Make sure that the coaxial cable connections are secure at the cable modem and at the wall jack Make sure that your cable Internet provider provisioned your cable Internet service Your provider can verify that the signal quality is good enough for cable modem service Remove any excessive splitters that you installed on your c...

Page 23: ... Click the Refresh or Reload button in the web browser The changes occurred but the web browser might be caching the old configuration Troubleshoot the Cable Internet Connection If your cable modem cannot access the Internet but the Internet LED lights green register the cable MAC address or device MAC address of your cable modem with your cable Internet provider see Contact Your Cable Internet Pr...

Page 24: ...fications Dimensions 5 8 x 3 8 x 1 8 in 147 x 96 x 30 mm Weight 0 44 lb 0 19 kg Environmental Operating temperature 32 to 104 F 0 to 40 C Operating humidity 90 maximum relative humidity noncondensing Interface Local 10 100 1000 RJ 45 Gigabit Ethernet port Internet Coaxial cable connector DOCSIS 3 0 Backward compatible with DOCSIS 2 0 Memory 128 MB Flash 128 MB RAM Certifications CableLabs certifie...

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