User manual
Table Of Contents
- Nighthawk X6 AC3200 Tri-Band WiFi Router
- Contents
- 1. Hardware Setup
- 2. Connect to the Network and Access the Router
- 3. Specify Your Internet Settings
- 4. Optimize Performance
- 5. Control Access to the Internet
- 6. Tri-Band WiFi Connections
- 7. Share USB Devices Attached to the Router
- 8. Access USB Devices Through the Internet
- 9. Use the Router as a Media Server
- 10. Share a USB Printer
- 11. Network Settings
- Set Up a Default DMZ Server
- Change the Router’s Device Name
- Change the LAN TCP/IP Settings
- Specify the IP Addresses That the Router Assigns
- Disable the DHCP Server Feature in the Router
- Reserve LAN IP Addresses
- Use the WPS Wizard for WiFi Connections
- Specify Basic WiFi Settings
- Change the WiFi Password or Security Level
- Set Up a Guest Network
- Control the Wireless Radios
- Set Up a Wireless Schedule
- Specify WPS Settings
- 12. Manage Your Network
- 13. Use VPN to Access Your Network
- 14. Specify Internet Port Settings
- 15. Troubleshooting
- Sequence to Restart Your Network
- Check Ethernet Cable Connections
- Wireless Settings
- Network Settings
- Standard LED Behavior When the Router is Powered On
- Power LED Is Off or Blinking
- Power LED Stays Amber
- LEDs Never Turn Off
- Internet or Ethernet Port LEDs Are Off
- WiFi LED Is Off
- Cannot Log In to the Router
- Cannot Access the Internet
- Changes Not Saved
- Wireless Connectivity
- Troubleshoot Your Network Using the Ping Utility
- A. Supplemental Information

Specify Your Internet Settings
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Nighthawk X6 AC3200 Tri-Band WiFi Router
This setting specifies how the router assigns IPv6 addresses to the devices on your home
network (the LAN).
10. (Optional) Select the Use This Interface ID check box and specify the interface ID to be
used for the IPv6 address of the router’s LAN interface.
If you do not specify an ID here, the router generates one automatically from its MAC
address.
11. Click the Apply button.
Your settings are saved.
Change the MTU Size
The maximum transmission unit (MTU) is the largest data packet a network device transmits.
When one network device communicates across the Internet with another, the data packets
travel through many devices along the way. If a device in the data path uses a lower MTU
setting than the other devices, the data packets must be split or “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:
• You experience problems connecting to your ISP or other Internet service, and the
technical support of either the ISP or NETGEAR recommends changing the MTU setting.
These web-based applications might require an MTU change:
- A secure website that does not open, or displays only part of a web page
- 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. For example, you might not be able to access certain
websites, frames within websites, secure login pages, or FTP or POP
servers.
To change the MTU size:
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.