Nighthawk AC1900 WiFi Cable Modem Router - Netgear

1 350 East Plumeria DriveSan Jose, CA 95134 USAJ anuary 2017202-11720-01 Nighthawk AC1900 wifi Cable Modem RouterModel C6900 User Manual 2 Nighthawk AC1900 wifi Cable Modem Router SupportThank you for purchasing this Netgear product. You can visit 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 the current EU Declaration of Conformity, visit regulatory compliance information, visit the regulatory compliance document before connecting the power Netgear , Inc.

2 , Netgear and the Netgear Logo are trademarks of Netgear , Inc. Any non- Netgear trademarks are used for reference purposes 1 Hardware SetupUnpack Your Modem Router .. 7 Front Panel .. 7 Rear Panel .. 9 Position Your Modem Router .. 9 Cable Your Modem Router .. 10 Cable the Modem Router in a Simple Network .. 10 Cable Your Modem Router to a Router and Use Bridge Mode .. 11 Activate Your Internet Service .. 12 Activate Your Internet Service With Comcast XFINITY .. 14 Chapter 2 Connect to the Network and Access the Modem RouterConnect to the Network.. 17 Wired Connection .. 17 wifi Connection.

3 17 Label .. 18 Types of Logins .. 18 Log In to the Modem Router .. 18 Access the Modem Router with Netgear genie App .. 20 Chapter 3 Specify Your Internet SettingsSpecify the Cable Connection Starting Frequency .. 22 View Modem Router Initialization.. 23 Manually Set Up the Internet Connection .. 24 Specify an IPv6 Internet Connection .. 25 Change the MTU Size .. 26 Chapter 4 Control Access to the InternetSet Up Parental Controls .. 30 Block Access to Your Network.. 31 Use Keywords to Block Internet Sites .. 32 Block Services from the Internet .. 33 Schedule When to Block Internet Sites and Services.

4 34 Avoid Blocking on a Trusted Computer .. 35 Set Up Security Event Email Notifications .. 36 4 Nighthawk AC1900 wifi Cable Modem Router Chapter 5 Specify Network SettingsView WAN Settings .. 39 Set Up a Default DMZ Server .. 40 Change the Modem Router s Device Name .. 41 Change the LAN TCP/IP Settings .. 41 Specify the IP Addresses that the Modem Router Assigns .. 42 Disable the DHCP Server Feature in the Modem Router .. 44 Reserve LAN IP Addresses .. 44 Improve Network Connections with Universal Plug and Play .. 45 Use the WPS Wizard for wifi Connections.

5 46 Specify Basic wifi Settings .. 47 Change the wifi Security Option .. 49 Set Up a Guest Network .. 50 Control the Wireless Radios .. 51 Use the wifi On/Off Button .. 51 Enable or Disable the Wireless Radios .. 52 Set Up a Wireless Schedule .. 53 Specify WPS Settings .. 54 Chapter 6 Manage Your NetworkChange the admin Password .. 56 View Modem Router Status .. 56 Display Internet Port Statistics .. 57 Check the Internet Connection Status .. 58 View Logs of Modem Router Activity .. 59 View Event Logs .. 61 Run the Ping Utility .. 62 Run the Traceroute Utility .. 63 Monitor Internet Traffic.

6 64 View Devices Currently on the Network .. 65 Manage the Modem Router Configuration File.. 66 Back Up Settings .. 66 Restore Configuration Settings.. 67 Erase the Current Configuration Settings .. 68 View Wireless Access Points in Your Area .. 68 View or Change the Modem Router Wireless Channel .. 69 Dynamic DNS .. 70 Specify a DNS Account .. 71 Change the Dynamic DNS Settings .. 71 Remote Management .. 72 Chapter 7 Specify Internet Port SettingsSet Up Port Forwarding to a Local Server .. 75 Add a Custom Port Forwarding Service .. 76 Edit a Port Forwarding Service .. 77 Delete a Port Forwarding Entry.

7 78 5 Nighthawk AC1900 wifi Cable Modem RouterApplication Example: Make a Local Web Server Public .. 78 How the Modem Router Implements the Port Forwarding Rule .. 78 Set Up Port Triggering .. 79 Add a Port Triggering Service .. 79 Application Example: Port Triggering for Internet Relay Chat .. 80 Chapter 8 TroubleshootingTroubleshoot with the LEDs .. 83 Power LED Is Off.. 83 LEDs Never Turn Off.. 83 Internet LED Is Off .. 83 Troubleshoot the Cable Internet Connection .. 83 Cannot Log In to the Modem Router .. 84 Changes Not Saved .. 85 Wireless Connectivity.

8 85 Troubleshoot Your Network Using the Ping Utility .. 86 Test the LAN Path to Your Modem Router .. 86 Test the Path from Your Computer to a Remote Device .. 87 Appendix A Supplemental InformationFactory Settings.. 89 Technical Specifications .. 91611. Hardware SetupThis chapter covers the following topics: Unpack Your Modem Router Front Panel Rear Panel Position Your Modem Router Cable Your Modem Router Activate Your Internet Service Activate Your Internet Service With Comcast XFINITY For more information about the topics covered in this manual, visit the support website at Setup 7 Nighthawk AC1900 wifi Cable Modem RouterUnpack Your Modem RouterYour package contains the following cablePower adapterModem routerFigure 1.

9 Package contentsFront PanelThe Modem Router has status LEDs and buttons on the LEDD ownstream LEDU pstream LEDI nternet LEDWPS button / LEDWiFi On/Off button5 GHz GHz LEDE thernet LEDF igure 2. Modem Router front viewHardware Setup 8 Nighthawk AC1900 wifi Cable Modem Router You can use the LEDs to verify status and connections. The following table lists and describes each LED and button on the front panel of the Modem Green. Power is supplied to the Modem Router . Off. No power is supplied to the Modem Router . Solid red. Thermal cutoff mode.

10 Power off the unit, let it cool, and move it away from heat sources (such as a TV, DVD player, or speakers) and keep it vertical in open Solid amber. One downstream channel is locked. Solid green. Two or more downstream channels are locked. Blinking green. The Modem Router is scanning for a downstream channel. Off. No downstream channel is locked. Upstream Solid amber. One upstream channel is locked. Solid green. Two or more upstream channels are locked. Blinking green. The Modem Router is scanning for an upstream channel. Off. No upstream channel is Solid green.