Change the MTU Size, Common MTU Sizes | NETGEAR R6700 guide

Nighthawk AC1750 Smart WiFi Router

Change the MTU Size

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. A login screen displays.

3.Enter the router user name and password.

The user name is admin. The default password is password. The user name and password are case-sensitive.

The BASIC Home screen displays.

4.Select ADVANCED > Setup > WAN Setup.

5.In the MTU Size field, enter a value from 64 to 1500.

6.Click the Apply button. Your change is saved.

Common MTU Sizes

If you suspect an MTU problem, a common solution is to change the MTU to 1400. If you are willing to experiment, you can gradually reduce the MTU from the maximum value of 1500 until the problem goes away. The following table describes common MTU sizes and applications.

Table 2. Common MTU sizes

MTU

1500

1492

1472

Application

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 routers, adapters, and switches.

Used in PPPoE environments.

Maximum size to use for pinging. (Larger packets are fragmented.)

Specify Your Internet Settings

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NETGEAR R6700 user manual Change the MTU Size, Common MTU Sizes,  To change the MTU size, Select Advanced Setup WAN Setup

Contents

Nighthawk AC1750 Smart WiFi Router Support ComplianceTrademarks Contents Optimize Performance Use the Router as a Media Server Manage Your Network Appendix a Supplemental Information Hardware Setup Unpack Your Router Attach the Antennas To attach the antennas USB 3.0 port Top and Front Panels LED Position Your Router Rear Panel Cable Your Router Following image shows how to cable your router  To cable your router Connect to the Network Access the Router  To find and select the WiFi network Wired ConnectionWiFi Connection  To use WPS to connect to the WiFi network Label Types of LoginsUse an Internet Browser to Access the Router Netgear genie Automatic Internet Setup  To use Netgear genie to set up your router  To change the language Change the LanguageLog In to the Router  To log in to the router  To use the genie app to access the router Access the Router with Netgear genie App Specify Your Internet Settings Use the Internet Setup Wizard  To use the Setup WizardSelect Advanced Setup Wizard Manually Set Up the Internet Connection Specify an Internet Connection Without a Login To specify the Internet connection settings Specify Your Internet Settings  To view or change the basic Internet setup Specify an Internet Connection That Uses a Login Specify Your Internet Settings Specify IPv6 Internet Connections  To set up an IPv6 Internet connection Requirements for Entering IPv6 Addresses Use Auto Detect for an IPv6 Internet ConnectionInternet Connection Type list, select Auto Detect Use Auto Config for an IPv6 Internet Connection Specify Your Internet Settings Internet Connection Type list, select 6to4 Tunnel Set Up an IPv6 6to4 Tunnel Internet Connection Set Up an IPv6 Pass Through Internet Connection Internet Connection Type list, select Fixed Set Up an IPv6 Fixed Internet Connection To set up a pass-through IPv6 Internet connection  To set up a fixed IPv6 Internet connection Specify Your Internet Settings  To set up an IPv6 Internet connection with a Dhcp server Set Up an IPv6 Dhcp Internet Connection Set Up an IPv6 PPPoE Internet Connection  To set up a PPPoE IPv6 Internet connectionInternet Connection Type list, select PPPoE Specify Your Internet Settings Maximum Transmission Unit  To change the MTU size Select Advanced Setup WAN SetupChange the MTU Size Common MTU Sizes Nighthawk AC1750 Smart WiFi Router Common MTU sizes Optimize Performance Optimize Internet Gaming with Upstream QoS Prioritize Internet Traffic with Quality of Service Add Upstream QoS Rules  To enable upstream QoS Set Up QoS for Applications and Online Gaming Select Advanced Setup QoS Setup Upstream QoS To create a QoS policy for applications and online games Optimize Performance From the Priority Category list, select Ethernet LAN Port Set Up QoS for a Router LAN Port Set Up QoS for a MAC Address Edit an Upstream QoS Policy From the Priority Category list, select MAC Address To edit a QoS policy  To delete a QoS policy Delete an Upstream QoS Policy Optimize Video Streaming with Downstream QoS  To enable downstream QoS  To add a downstream QoS rule by keyword Add Downstream QoS Rules by Keyword Add a Downstream QoS Rule by Device Improve Network Connections with Universal Plug and Play  To enable Universal Plug and Play Wi-Fi Multimedia Quality of Service  To disable WMM QoS Control Access to the Internet Set Up Parental Controls  To set up Live Parental ControlsSelect Parental Controls Control Access to the Internet Control Access to Your Network  To set up access controlClick the Take me to the status screen button Select the Turn on Access Control check box Use Keywords to Block Internet Sites To block Internet sites Delete Keywords from the List to Be Blocked Select Advanced Security Block Sites To delete keywords from the list  To block services Block Services from the Internet Control Access to the Internet  To specify a trusted computer Schedule When to Block Internet Sites and ServicesAvoid Blocking on a Trusted Computer  To schedule blocking  To set up email notifications Set Up Security Event Email Notifications Control Access to the Internet Router USB Drive Requirements Access a USB Device on the Network  To map the USB device to a Windows network drive  To connect a USB device  To back up your Windows computer Back Up Windows Computers with ReadySHARE Vault  To format your USB hard disk drive and specify partitions Set Up a USB Hard Drive on a MacBack Up Mac Computers with Time Machine Prepare to Back Up a Large Amount of Data From the Apple menu, select System Preferences Select the Wake for Wi-Fi network access check boxType afp//routerlogin.net Use Time Machine to Back Up onto a USB Hard Drive Control Access to the USB Drive  To specify the USB access settingsSelect Advanced USB Storage Advanced Settings Network Neighborhood/MacShare. Enabled by default  To set up FTP accessUse FTP Within the Network  To view or change network folders View Network Folders on a USB Drive  To add a network folder Add a Network Folder on a USB Drive Edit a Network Folder on a USB Drive Click the Create Network Folder button To edit a network folder Select Advanced Advanced Setup USB Settings Approve USB Devices To approve USB devices Safely Remove a USB Drive Select the Allow only approved devices check box To remove a USB disk drive safely Share USB Drives Attached to the Router Access the Router’s USB Drive Through the Internet Access the USB Drive Through the Internet Set Up FTP Access Through the Internet To access the USB drive from a remote computer  To access the USB drive with FTP from a remote computer Access the USB Drive Through the Internet with FTP Your Personal FTP Server Dynamic DNS Set Up a New Dynamic DNS Account Specify a DNS Account That You Already Use  To set up Dynamic DNS if you already set up an account Netgear  To set up your personal account and use FTP Set Up Your Personal FTP ServerChange the Dynamic DNS Settings  To change your settings Use the Router as a Media Server Specify ReadyDLNA Media Server Settings  To specify media server settingsPlay Music from a USB Drive with iTunes Server Play music on a USB drive with iTunes  To specify iTunes server settings  To set up the router to work with TiVo Play Media from a USB Drive on TiVoSelect Advanced USB Storage Media Server  To play videos On the TiVo, select TiVo Central My Shows  To copy TiVo files to a computer Share a USB Printer  To download the utility Install the Printer Driver and Cable the Printer To install the driver and cable the printer Download the ReadySHARE Printer Utility  To install the utility Install the ReadySHARE Printer Utility  To manually connect and print Use the Shared Printer  To view or change the status View or Change the Status of a Printer  To use the scan feature of a multifunction USB printer Use the Scan Feature of a Multifunction USB Printer Change Netgear USB Control Center Settings  To change the language Select Tools Configuration To turn off automatic Netgear USB Control Center startup  To specify the time-out Select Tools Configuration Specify Network Settings Select Advanced Advanced Setup LED Control Settings Disable LED Blinking or Turn Off LEDsView WAN Settings  To disable LED blinking or turn off the LEDs Specify Network Settings 105  To set up a default DMZ server Set Up a Default DMZ Server  To change the router’s device name Change the LAN TCP/IP Settings To change the LAN TCP/IP settings Change the Router’s Device Name Select Advanced Setup LAN Setup Specify the IP Addresses That the Router Assigns  To disable the Dhcp server feature in the router Disable the Dhcp Server Feature in the Router  To reserve an IP address Reserve LAN IP Addresses  To edit a reserved address entry Edit a Reserved LAN IP Address  To use the WPS Wizard Use the WPS Wizard for WiFi ConnectionsDelete a Reserved LAN IP Address  To delete a reserved address entry  To specify basic wireless settings Specify Basic WiFi Settings Specify Network Settings 115  To change the WPA settings Change the WiFi Security Option Set Up a Guest Network  To set up a guest networkSelect Guest Network How the Router Manages Wireless Clients  To disable airtime fairnessAirtime Fairness Implicit Beamforming Control the Wireless RadiosSelect Advanced Advanced Setup Wireless Settings  To disable implicit Beamforming Use the WiFi On/Off Button Enable or Disable the Wireless Radios To enable or disable the wireless radios  To set up the wireless schedule Set Up a Wireless Schedule  To specify WPS Settings Specify WPS Settings Use the Router as a Wireless Access Point  To set up the router as an APSelect Advanced Advanced Setup Wireless AP Router in bridge mode with an 802.11ac WiFi connection Set Up the Router in Bridge Mode  To set up bridge mode Click the setup bridge mode wireless settings button Set Up a Wireless Distribution System Specify Network Settings 127  To set up the base station Set Up the Base Station  To configure a Netgear router as a repeater Set Up a Repeater Specify Network Settings 130 Manage Your Network Update the Router Firmware Change the admin Password To check for new firmware and update your router Set Up Password Recovery  To set the password for the user name adminSelect Advanced Administration Set Password  To recover your password Recover the admin Password To set up password recovery Select the Enable Password Recovery check box  To display Internet port statistics View Router StatusDisplay Internet Port Statistics  To view router status and usage information Manage Your Network 136  To check the Internet connection status Check the Internet Connection Status Select Advanced Administration Logs View Logs of Router Activity To view logs Select Advanced Advanced Setup Traffic Meter Monitor Internet Traffic To monitor Internet traffic Create Custom Static Routes  To set up a static route  To delete a static route Edit a Static RouterDelete a Static Router  To edit a static route View Devices Currently on the Network  To view devices on the networkSelect Attached Devices Select Advanced Administration Backup Settings Manage the Router Configuration FileBack Up Settings  To back up the router’s configuration settings Do not interrupt the whole reboot process Restore Configuration SettingsErase the Current Configuration Settings  To restore configuration settings that you backed up Remote Management  To set up remote management  To use remote access Use VPN to Access Your Network Set Up a VPN Connection  To install VPN client software Specify VPN Service in the RouterInstall OpenVPN Software on Your Computer  To specify the VPN service Use VPN to Access Your Network 151 NETGEAR-VPN  To open a VPN tunnel Use a VPN Tunnel Use VPN to Access the Router’s USB Drive and Media Use VPN to Access Your Internet Service at Home Set Up VPN Client Internet Access in the Router To allow VPN clients to use your home Internet service  To access your Internet service Block VPN Client Internet Access in the RouterUse a VPN Tunnel to Access Your Internet Service at Home  To allow VPN clients to access only your home network Use VPN to Access Your Network 157 Specify Internet Port Settings  To forward specific incoming protocols Set Up Port Forwarding to a Local Server Add a Custom Port Forwarding Service  To add a custom serviceClick the Add Custom Service button  To edit a port forwarding entry Edit a Port Forwarding Service  To delete a port forwarding entry Delete a Port Forwarding EntryApplication Example Make a Local Web Server Public How the Router Implements the Port Forwarding Rule Set Up Port Triggering Add a Port Triggering Service To add a port triggering service Specify Internet Port Settings 164 Application Example Port Triggering for Internet Relay Chat Enable Port Triggering To enable port triggering Clear the Disable Port Triggering check box Specify Internet Port Settings 166 Troubleshooting Sequence to Restart Your Network Wireless SettingsNetwork Settings Quick Tips Troubleshoot with the LEDs Standard LED Behavior When the Router Is Powered OnPower LED Is Off or Blinking Power LED Stays Amber Internet or Ethernet Port LEDs Are Off WiFi LED Is OffCannot Log In to the Router LEDs Never Turn Off  To check the WAN IP address Cannot Access the Internet  To troubleshoot a PPPoE connection Troubleshoot PPPoE Troubleshoot Internet Browsing Wireless Connectivity Troubleshoot Your Network Using the Ping UtilityChanges Not Saved Test the LAN Path to Your Router Test the Path from Your Computer to a Remote Device To ping the router from a Windows computer Troubleshooting 176 Supplemental Information Factory default settings Factory Settings Supplemental Information 179 R6700 router specifications Technical Specifications