Related Manuals for NETGEAR Nighthawk C6900
Summary of Contents for NETGEAR Nighthawk C6900
- Page 1 N i g h t h a w k A C 1 9 0 0 W i F i C a b l e M o d e m R o u t e r M o d e l C 6 9 0 0 NETGEAR, Inc. February 2021...
- Page 2 Customer-owned cable devices might not be compatible with certain cable networks. Check with your cable Internet provider to confirm that this NETGEAR cable device is allowed on your cable network. If you are experiencing trouble installing your cable device, contact NETGEAR at 1-866-874-8924.
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Page 3: Table Of Contents
Log In to the Modem Router ........20 Access the Modem Router with NETGEAR genie App ....22 Chapter 3 Specify Your Internet Settings Specify the Cable Connection Starting Frequency . - Page 4 Nighthawk AC1900 WiFi Cable Modem Router Set Up a Default DMZ Server ........41 Change the Modem Router’s Device Name .
- Page 5 Nighthawk AC1900 WiFi Cable Modem Router Add a Port Triggering Service........83 Application Example: Port Triggering for Internet Relay Chat .
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Page 6: Chapter 1 Hardware Setup
• 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 http://support.netgear.com. -
Page 7: Unpack Your Modem Router
Nighthawk AC1900 WiFi Cable Modem Router Unpack Your Modem Router Your package contains the following items. Ethernet cable Power adapter Modem router Figure 1. Package contents Hardware Setup User Manual... -
Page 8: Front Panel
Nighthawk AC1900 WiFi Cable Modem Router Front Panel The modem router has status LEDs and buttons on the front. Power LED Downstream LED Upstream LED Internet LED 2.4 GHz LED 5 GHz LED Ethernet LED WiFi On/Off button WPS button / LED Figure 2. - Page 9 Nighthawk AC1900 WiFi Cable Modem Router Description Internet • Solid green. The modem router is online. • Blinking green. The modem router is synchronizing with the cable provider’s cable modem termination system (CMTS). • Slow blinking amber and green. The modem router reached the traffic meter limit. (For information about the traffic meter, see Monitor Internet Traffic on page 67.) Off.
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Page 10: Rear Panel
Nighthawk AC1900 WiFi Cable Modem Router Rear Panel The rear panel has the connections and button shown the following figure. Ethernet LAN ports Coaxial cable connector Reset button Power adapter input Figure 3. Modem router rear panel Position Your Modem Router The modem router lets you access your network anywhere within the operating range of your wireless network. -
Page 11: Cable Your Modem Router
Nighthawk AC1900 WiFi Cable Modem Router • Place the modem router in an elevated location, minimizing the number walls and ceilings between the modem router and your other devices. • Place the modem router away from electrical devices such as these: Ceiling fans Home security systems Microwaves... -
Page 12: Cable The Modem Router In A Simple Network
Nighthawk AC1900 WiFi Cable Modem Router Cable the Modem Router in a Simple Network The modem router comes configured to work as both a modem and a router. You can share your Internet connection without connecting the modem router to a router or gateway. Internet Ethernet cable Power adapter... - Page 13 Nighthawk AC1900 WiFi Cable Modem Router To cable your modem router to a gateway or router: 1. Connect a coaxial cable. Use the coaxial cable that your cable company provides to connect the cable port on the modem router to a cable wall outlet or a line splitter. For Xfinity cable Internet service, Comcast Xfinity recommends connecting your modem router to a cable wall outlet.
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Page 14: Activate Your Internet Service
Nighthawk AC1900 WiFi Cable Modem Router Activate Your Internet Service To activate your Internet service: 1. Contact your Internet provider. 2. Check with your cable Internet provider to confirm that this modem router is allowed on your cable network. This modem router might not be compatible with certain cable networks. 3. -
Page 15: Activate Your Internet Service With Comcast Xfinity
Nighthawk AC1900 WiFi Cable Modem Router 5. When asked, provide the modem router’s serial number and MAC address, which are on the product label. MAC address Serial number 6. Wait for your cable Internet provider to confirm that your modem router is active. 7. - Page 16 Nighthawk AC1900 WiFi Cable Modem Router 5. The activation process takes about five minutes. 6. On your mobile device, launch a web browser and enter routerlogin.net or 192.168.0.1 in the address field. 7. Follow the prompts to: • Agree to the terms and conditions. •...
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Page 17: Chapter 2 Connect To The Network And Access The Modem Router
Connect to the Network and Access the Modem Router This chapter contains the following sections: Connect to the Network • Types of Logins • Log In to the Modem Router • Access the Modem Router with NETGEAR genie App •... -
Page 18: Connect To The Network
Nighthawk AC1900 WiFi Cable Modem Router Connect to the Network You can connect to the modem router’s network through a wired or WiFi connection. If you set up your computer to use a static IP address, change the settings so that it uses Dynamic Host Configuration Protocol (DHCP). -
Page 19: Label
Nighthawk AC1900 WiFi Cable Modem Router Label The label on the modem router shows the login information, MAC address, and serial number. Figure 5. Modem Router label Types of Logins Separate types of logins have different purposes. It is important that you understand the difference so that you know which login to use when. - Page 20 Nighthawk AC1900 WiFi Cable Modem Router 2. Type http://routerlogin.net or http://192.168.0.1. A login window opens. 3. Enter the modem router user name and password. The user name is admin. The user name and password are case-sensitive. The first time you log in to the modem router, you are prompted to change the admin password and set up security questions.
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Page 21: Access The Modem Router With Netgear Genie App
To use the genie app to access the modem router: 1. Visit the NETGEAR genie web page at www.NETGEAR.com/genie. 2. Follow the onscreen instructions to install the app on your smartphone, tablet, or computer. -
Page 22: Chapter 3 Specify Your Internet Settings
Specify Your Internet Settings Usually, the quickest way to set up the modem router to use your Internet connection is to allow the genie to detect the Internet connection when you first access the modem router with an Internet browser. You can also customize or specify your Internet settings. This chapter contains the following sections: View Modem Router Initialization •... -
Page 23: Specify The Cable Connection Starting Frequency
Nighthawk AC1900 WiFi Cable Modem Router 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 need to enter a starting frequency, contact your Internet provider. -
Page 24: View Modem Router Initialization
Nighthawk AC1900 WiFi Cable Modem Router View Modem Router Initialization You can track the initialization procedure of the modem router, and get details about the downstream and upstream cable channel. The time is displayed after the modem router is initialized. The modem router automatically goes through the following steps in the provisioning process: 1. -
Page 25: Manually Set Up The Internet Connection
Nighthawk AC1900 WiFi Cable Modem Router Manually Set Up the Internet Connection In most situations, you do not need to change these settings. NETGEAR recommends that you use the default settings for DHCP because most cable Internet services provide the IP address through DHCP. -
Page 26: Specify An Ipv6 Internet Connection
Use This MAC Address. Enter the MAC address that you want to use. 10. Click the Apply button. Your settings are saved. If the NETGEAR website does not display within one minute, see Chapter 8, Troubleshooting. Specify an IPv6 Internet Connection To specify an IPv6 Internet connection: 1. -
Page 27: Change The Mtu Size
“fragmented” to accommodate the device with the smallest MTU. The best MTU setting for NETGEAR equipment is often the default value. In some situations, changing the value fixes one problem but causes another. Leave the MTU unchanged unless one of these situations occurs: •... - Page 28 Nighthawk AC1900 WiFi Cable Modem Router Yahoo email MSN portal America Online’s DSL service • You use VPN and have severe performance problems. • You used a program to optimize MTU for performance reasons, and now you have connectivity or performance problems. Note: An incorrect MTU setting can cause Internet communication problems.
- Page 29 Table 1. Common MTU sizes Application 1500 The largest Ethernet packet size. This setting is typical for connections that do not use PPPoE or VPN, and is the default value for NETGEAR modem routers, adapters, and switches. 1492 Used in PPPoE environments.
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Page 30: Chapter 4 Control Access To The Internet
Control Access to the Internet The modem router comes with a built-in firewall that helps protect your home network from unwanted intrusions from the Internet. This chapter includes the following sections: Block Access to Your Network • Use Keywords to Block Internet Sites •... -
Page 31: Use Keywords To Block Internet Sites
Allow all new devices to connect. With this setting, if you buy a new device, it can access your network. You don’t need to enter its MAC address in this page. NETGEAR recommends that you leave this radio button selected. •... - Page 32 Nighthawk AC1900 WiFi Cable Modem Router To set block Internet sites: 1. Launch an Internet browser from a computer or wireless device that is connected to the network. 2. Type http://www.routerlogin.net or http://www.routerlogin.com. A login window opens. 3. Enter the user name and password. The user name is admin.
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Page 33: Block Services From The Internet
Nighthawk AC1900 WiFi Cable Modem Router To delete keywords from the list: 1. Do one of the following: • To delete a single word, select it and click the Delete Keyword button. The keyword is removed from the list. • To delete all keywords on the list, click the Clear List button. -
Page 34: Schedule When To Block Internet Sites And Services
Nighthawk AC1900 WiFi Cable Modem Router To specify the schedule, see Schedule When to Block Internet Sites and Services on page 35. 6. Click the Add button. 7. To add a service that is in the Service Type list, select the application or service. The settings for this service automatically display in the fields. -
Page 35: Avoid Blocking On A Trusted Computer
Nighthawk AC1900 WiFi Cable Modem Router Keywords to Block Internet Sites on page 32 and Block Services from the Internet on page 34. To schedule blocking: 1. Launch an Internet browser from a computer or wireless device that is connected to the network. -
Page 36: Set Up Security Event Email Notifications
Nighthawk AC1900 WiFi Cable Modem Router The BASIC Home page displays. 4. Select ADVANCED > Security > Block Sites. 5. Scroll down and select the Allow trusted IP address to visit blocked sites check box. 6. In the Trusted IP Address field, enter the IP address of the trusted computer. 7. - Page 37 Nighthawk AC1900 WiFi Cable Modem Router You might be able to find this information in the configuration page of your email program. If you leave this field blank, log and alert messages are not sent. 7. Enter the email address to which logs and alerts are sent in the Send to This E-mail Address field.
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Page 38: Chapter 5 Specify Network Settings
Specify Network Settings This chapter includes the following sections: View WAN Settings • Set Up a Default DMZ Server • Change the Modem Router’s Device Name • Change the LAN TCP/IP Settings • Specify the IP Addresses that the Modem Router Assigns •... -
Page 39: View Wan Settings
4. Select ADVANCED > Setup > WAN Setup. The following settings display: • Disable IPv4 Firewall Protection. NETGEAR recommends that you leave this check box empty so that the firewall protects your modem router. • Disable Port Scan and DoS Protection. DoS protection protects your LAN against denial of service attacks such as Syn flood, Smurf Attack, Ping of Death, and many others. -
Page 40: Set Up A Default Dmz Server
Nighthawk AC1900 WiFi Cable Modem Router MTU only if you are sure that it is necessary for your ISP connection. See Change the MTU Size on page 28. • Disable SIP ALG. Some VoIP applications do not work well with the SIP ALG. Selecting this check box to turn off the SIP ALG might help your VoIP devices to create or accept a call through the modem router. -
Page 41: Change The Modem Router's Device Name
Nighthawk AC1900 WiFi Cable Modem Router 5. Select the Default DMZ Server check box. 6. Type the IP address. 7. Click the Apply button. Your change takes effect. Change the Modem Router’s Device Name The modem router’s device name is C6900. This device name displays in file manager when you browse your network. - Page 42 Nighthawk AC1900 WiFi Cable Modem Router To change the LAN TCP/IP settings: 1. Launch an Internet browser from a computer or wireless device that is connected to the network. 2. Type http://www.routerlogin.net or http://www.routerlogin.com. A login window opens. 3. Enter the user name and password. The user name is admin.
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Page 43: Specify The Ip Addresses That The Modem Router Assigns
Nighthawk AC1900 WiFi Cable Modem Router Specify the IP Addresses that the Modem Router Assigns By default, the modem router acts as a Dynamic Host Configuration Protocol (DHCP) server. The modem router assigns IP, DNS server, and default gateway addresses to all computers connected to the LAN. -
Page 44: Disable The Dhcp Server Feature In The Modem Router
Nighthawk AC1900 WiFi Cable Modem Router This IP address must be in the same subnet as the modem router. b. In the Ending IP Address field, type the number at the end of the range of IP addresses. This IP address must be in the same subnet as the modem router. 7. -
Page 45: Reserve Lan Ip Addresses
Nighthawk AC1900 WiFi Cable Modem Router Reserve LAN IP Addresses When you specify a reserved IP address for a computer on the LAN, that computer always receives the same IP address each time it accesses the modem router’s DHCP server. Assign reserved IP addresses to computers or servers that require permanent IP settings. -
Page 46: Improve Network Connections With Universal Plug And Play
Nighthawk AC1900 WiFi Cable Modem Router 2. Click the Delete button. The address is removed. Improve Network Connections with Universal Plug and Play Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, access the network and connect to other devices as needed. UPnP devices can automatically discover the services from other registered UPnP devices on the network. -
Page 47: Use The Wps Wizard For Wifi Connections
Nighthawk AC1900 WiFi Cable Modem Router hops can range from 1 to 255. The default value for the advertisement time to live is 4 hops, which should be fine for most home networks. If you notice that some devices are not being updated or reached correctly, it might be necessary to increase this value. -
Page 48: Specify Basic Wifi Settings
You can find the preset SSID and password on the product label. Note: The preset SSID and password are uniquely generated for every device to protect and maximize your wireless security. NETGEAR recommends that you do not change your preset security settings. If you change your preset security settings, make a note of the new settings and store it in a safe place where you can easily find it. - Page 49 Nighthawk AC1900 WiFi Cable Modem Router 4. Select Wireless. 5. In the Region list, select your region. In some locations, you cannot change this setting. 6. To control the SSID broadcast, select or clear the Enable SSID Broadcast check box. When this check box is selected, the modem router broadcasts its network name (SSID) so that it displays when you scan for local WiFi networks on your computer or wireless device.
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Page 50: Change The Wifi Security Option
Your modem router comes with preset WPA2 or WPA security. The password that you enter to connect to your network is unique to your modem router and is on the product label. NETGEAR recommends that you use the preset security, but you can change them. NETGEAR recommends that you do not disable security. -
Page 51: Set Up A Guest Network
Nighthawk AC1900 WiFi Cable Modem Router 6. In the Passphrase field, enter the network key (password) that you want to use. It is a text string from 8 to 63 characters. 7. Write down the new password and keep it in a secure place for future reference. 8. - Page 52 7. Select a radio button for a security option. The WPA2 options use the newest standard for the strongest security, but some older computers and wireless devices cannot use it. NETGEAR recommends that you select the WPA-PSK [TKIP] + WPA2-PSK [AES] radio button. This setting protects your WiFi network and lets computers and wireless devices can connect to the WiFi network by using either WPA2 or WPA security.
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Page 53: Control The Wireless Radios
Nighthawk AC1900 WiFi Cable Modem Router Control the Wireless Radios The modem router has internal wireless radios that broadcast signals in the 2.4 GHz and 5 GHz range. By default, they are on so that you can connect wirelessly to the modem router. When the wireless radios are off, you can still use an Ethernet cable for a LAN connection to the modem router. -
Page 54: Set Up A Wireless Schedule
Nighthawk AC1900 WiFi Cable Modem Router 4. Select ADVANCED > Advanced Setup > Wireless Settings. 5. Select or clear the Enable Wireless Gateway Radio check boxes in the 2.4 GHz and 5 GHz sections of the page. Clearing this check box turns off the WiFi feature of the modem router. 6. -
Page 55: Specify Wps Settings
Nighthawk AC1900 WiFi Cable Modem Router The user name is admin. The user name and password are case-sensitive. The BASIC Home page displays. 4. Select ADVANCED > Advanced Setup > Wireless Settings. The Advanced Wireless Settings page displays. 5. Click the Add a new period button. 6. - Page 56 Disable Router’s PIN check box. 6. (Optional) Select or clear the Keep Existing Wireless Settings check box. By default, the Keep Existing Wireless Settings check box is selected. NETGEAR recommends that you leave this check box selected. If you clear this check box, the next time a new wireless client uses WPS to connect to the modem router, the modem router wireless settings change to an automatically generated random SSID and security key.
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Page 57: Chapter 6 Manage Your Network
Manage Your Network This chapter describes the modem router settings for administering and maintaining your modem router and home network. This chapter includes the following sections: Change the admin Password • View Modem Router Status • View Logs of Modem Router Activity •... -
Page 58: Change The Admin Password
Nighthawk AC1900 WiFi Cable Modem Router Change the admin Password This feature let you change the default password that is used to log in to the modem router with the user name admin. This password is not the one that you use for WiFi access. The label on your modem router shows your unique wireless network name (SSID) and password for wireless access. -
Page 59: Display Internet Port Statistics
Nighthawk AC1900 WiFi Cable Modem Router The BASIC Home page displays. 4. Click the ADVANCED tab. 5. For information about the displayed settings, click the Show/Hide Help Center link at the bottom of the page. Display Internet Port Statistics To display Internet port statistics: 1. -
Page 60: Check The Internet Connection Status
Nighthawk AC1900 WiFi Cable Modem Router 6. In the Internet Port pane, click the Show Statistics button. The following information displays: • System Up Time. The time elapsed since the modem router was last restarted. • Port. The statistics for the WAN (Internet) and LAN (Ethernet) ports. For each port, the page displays: Status. -
Page 61: View Logs Of Modem Router Activity
Nighthawk AC1900 WiFi Cable Modem Router The BASIC Home page displays. 4. Click the ADVANCED tab. 5. In the Internet Port pane, click the Connection Status button. The following information displays: • IP Address. The IP address that is assigned to the modem router. •... - Page 62 Nighthawk AC1900 WiFi Cable Modem Router 2. Type http://www.routerlogin.net or http://www.routerlogin.com. A login window opens. 3. Enter the user name and password. The user name is admin. The user name and password are case-sensitive. The BASIC Home page displays. 4. Select ADVANCED > Administration > Logs. The log page shows the following information: •...
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Page 63: View Event Logs
Nighthawk AC1900 WiFi Cable Modem Router View Event Logs Event logs capture important modem router events. To view the event logs: 1. Launch a web browser from a computer or wireless device that is connected to the network. 2. Type http://routerlogin.net or http://192.168.0.1. A login window opens. -
Page 64: Run The Ping Utility
Nighthawk AC1900 WiFi Cable Modem Router Run the Ping Utility Ping is an administration utility that tests whether a computer on the network is reachable and measures the time it takes messages sent from the originating device to reach a destination computer and return. -
Page 65: Run The Traceroute Utility
Nighthawk AC1900 WiFi Cable Modem Router 7. To stop a ping test, click the Abort Test button. 8. To clear the results from the display, click the Clear Results button. Run the Traceroute Utility To display the route and measure transit delays of packets across an IP, run the traceroute utility. -
Page 66: Monitor Internet Traffic
Nighthawk AC1900 WiFi Cable Modem Router 7. Click the Start Test button. The traceroute results display. 8. To clear the results from the display, click the Clear Results button. Monitor Internet Traffic Traffic metering allows you to monitor the volume of Internet traffic that passes through the modem router Internet port. -
Page 67: View Devices Currently On The Network
Nighthawk AC1900 WiFi Cable Modem Router • Select the Traffic volume control by radio button and then select one of the following options: No Limit. No restriction is applied when the traffic limit is reached. Download only. The restriction is applied to incoming traffic only. Both Directions. -
Page 68: Manage The Modem Router Configuration File
Nighthawk AC1900 WiFi Cable Modem Router 4. Select Attached Devices. The Wired Devices section lists devices that are connected to the modem router with Ethernet cables. The Wireless Devices section lists devices that are connected to the wireless network. The following information is displayed: •... -
Page 69: Restore Configuration Settings
Nighthawk AC1900 WiFi Cable Modem Router The user name is admin. The user name and password are case-sensitive. The BASIC Home page displays. 4. Select ADVANCED > Administration > Backup Settings. 5. Click the Back Up button. 6. Specify a location on your network. A confirmation message displays. -
Page 70: Erase The Current Configuration Settings
Nighthawk AC1900 WiFi Cable Modem Router Erase the Current Configuration Settings You can erase the current configuration and restore the factory default settings. You might want to do this if you move the modem router to a different network. (See Factory Settings on page 93). -
Page 71: View Or Change The Modem Router Wireless Channel
Nighthawk AC1900 WiFi Cable Modem Router 4. Select ADVANCED > Administration > Wireless AP. This page displays the wireless access points in use in your area. View or Change the Modem Router Wireless Channel Many countries and geographic locations have laws or guidelines about which channels can be used. -
Page 72: Dynamic Dns
Nighthawk AC1900 WiFi Cable Modem Router 4. Select ADVANCED > Administration > Wireless Channel. The page displays wireless channels in use in the 2.4 GHz WiFi band. Your network is shown in blue. Yellow shows other networks in your area. 5. -
Page 73: Specify A Dns Account
Nighthawk AC1900 WiFi Cable Modem Router Specify a DNS Account To set up Dynamic DNS in the modem router: 1. Launch an Internet browser from a computer or wireless device that is connected to the network. 2. Type http://www.routerlogin.net or http://www.routerlogin.com. A login window opens. -
Page 74: Remote Management
Nighthawk AC1900 WiFi Cable Modem Router A login window opens. 3. Enter the user name and password. The user name is admin. The user name and password are case-sensitive. The BASIC Home page displays. 4. Select ADVANCED > Advanced Settings > Dynamic DNS. 5. - Page 75 Nighthawk AC1900 WiFi Cable Modem Router 4. Select ADVANCED > Advanced Setup > Remote Management. 5. Select the Turn Remote Management On check box. 6. In the Allow Remote Access By section, specify the external IP addresses to be allowed to access the modem router’s remote management: Note: For enhanced security, restrict access to as few external IP addresses as practical...
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Page 76: Chapter 7 Specify Internet Port Settings
Specify Internet Port Settings You can use port forwarding and port triggering to set up rules for Internet traffic. You need networking knowledge to set up these features. This chapter includes the following sections: Set Up Port Forwarding to a Local Server •... -
Page 77: Set Up Port Forwarding To A Local Server
Nighthawk AC1900 WiFi Cable Modem Router Set Up Port Forwarding to a Local Server If you have a server in your home network, you can allow certain types of incoming traffic to reach the server. For example, you might want to make a local web server, FTP server, or game server visible and available to the Internet. -
Page 78: Add A Custom Port Forwarding Service
Nighthawk AC1900 WiFi Cable Modem Router If the service that you want to add is not in the list, create a custom service. See Add a Custom Port Forwarding Service on page 79. 9. In the Server IP Address field, enter the IP address of the computer that will provide the service. -
Page 79: Edit A Port Forwarding Service
Nighthawk AC1900 WiFi Cable Modem Router If the application uses a range of ports, enter the ending port number of the range in the External Ending Port field. 11. Specify the internal ports by one of these methods: • Leave the Use the same port range for Internal port check box selected. •... -
Page 80: Delete A Port Forwarding Entry
Nighthawk AC1900 WiFi Cable Modem Router Delete a Port Forwarding Entry To delete a port forwarding entry: 1. Launch an Internet browser from a computer or wireless device that is connected to the network. 2. Type http://www.routerlogin.net or http://www.routerlogin.com. A login window opens. 3. -
Page 81: Set Up Port Triggering
Nighthawk AC1900 WiFi Cable Modem Router 1. When you type the URL www.example.com in your browser, the browser sends a web page request message with the following destination information: • Destination address. The IP address of www.example.com, which is the address of your modem router. -
Page 82: Add A Port Triggering Service
Nighthawk AC1900 WiFi Cable Modem Router Add a Port Triggering Service To add a port triggering service: 1. Launch an Internet browser from a computer or wireless device that is connected to the network. 2. Type http://www.routerlogin.net or http://www.routerlogin.com. A login window opens. 3. -
Page 83: Application Example: Port Triggering For Internet Relay Chat
Nighthawk AC1900 WiFi Cable Modem Router Application Example: Port Triggering for Internet Relay Chat Some application servers, such as FTP and IRC servers, send replies to multiple port numbers. Using port triggering, you can tell the modem router to open more incoming ports when a particular outgoing port starts a session. -
Page 84: Chapter 8 Troubleshooting
Troubleshooting This chapter provides information to help you diagnose and solve problems you might have with your modem router. If you do not find the solution here, check the NETGEAR support site at http://support.netgear.com for product and contact information. This chapter contains the following sections: Troubleshoot with the LEDs •... -
Page 85: Troubleshoot With The Leds
Make sure that the power adapter is securely connected to your modem router and securely connected to a working power outlet. • Check that you are using the power adapter that NETGEAR supplied for this product. If the problem persists, contact technical support for help at www.netgear.com/support. •... -
Page 86: Troubleshoot The Cable Internet Connection
Nighthawk AC1900 WiFi Cable Modem Router Troubleshoot the Cable Internet Connection When your modem router cannot access the Internet and your Internet LED is on, register the cable MAC address or device MAC address of your modem router with your cable Internet provider. - Page 87 Nighthawk AC1900 WiFi Cable Modem Router DHCP server. These autogenerated addresses are in the range of 169.254.x.x. If your IP address is in this range, check the connection from the computer to the modem router, and reboot your computer. • If your modem router’s IP address was changed and you do not know the current IP address, clear the modem router’s configuration to factory defaults.
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Page 88: Changes Not Saved
Nighthawk AC1900 WiFi Cable Modem Router Changes Not Saved If the modem router does not save the changes you make in the modem router interface, check the following: • When entering configuration settings, always click the Apply button before moving to another page or tab, or your changes are lost. -
Page 89: Troubleshoot Your Network Using The Ping Utility
Nighthawk AC1900 WiFi Cable Modem Router the modem router and view or change the WiFi password. For more information, see Change the WiFi Security Option on page 51 The WiFi signal strength is weak in your location: Is your modem router too far from your computer, or too close? Place your computer near the modem router, but at least 6 feet (1.8 meters) away, and see if the signal strength improves. -
Page 90: Test The Path From Your Computer To A Remote Device
Nighthawk AC1900 WiFi Cable Modem Router For a wired connection, make sure that the numbered LAN port LED is lit for the port to which you are connected. Check that the appropriate LEDs are on for your network devices. If your modem router and computer are connected to a separate Ethernet switch, make sure that the link LEDs are lit for the switch ports that are connected to your computer and modem router. -
Page 91: Appendix A Supplemental Information
Supplemental Information This appendix covers the following topics: Factory Settings • Technical Specifications •... -
Page 92: Factory Settings
Nighthawk AC1900 WiFi Cable Modem Router Factory Settings You can return the modem router to its factory settings. Use the end of a paper clip or a similar object to press and hold the Reset button on the back of the modem router for at least seven seconds. - Page 93 Nighthawk AC1900 WiFi Cable Modem Router Table 2. Factory default settings (continued) Feature Default behavior Wireless Country/region United States (continued) RF channel (2.4 GHz) Auto RF channel (5 GHz) CH 153 (or manually select Band I and 4 Channels) Operating mode Up to 600 Mbps at 2.4 GHz, 1300 Mbps at 5 GHz 1.
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Page 94: Technical Specifications
Nighthawk AC1900 WiFi Cable Modem Router Technical Specifications Table 3. Modem router specifications Feature Description Data and routing protocols TCP/IP, DHCP, Dynamic DNS, UPnP, and SMB Power adapter 120V, 60 Hz, input (North America) 12V/3.5A DC output Dimensions 245.36 x 211 x 43.18 mm (9.66 x 8.31 x 1.7 in.) Weight Weight: 725.75 g (1.6 lb) Operating temperature...