Common MTU Sizes | NETGEAR WNDR4500 guide

N900 Wireless Dual Band Gigabit Router WNDR4500

•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 such as the inability to access certain websites, frames within websites, secure login pages, or FTP or POP servers.

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	Application

1500	The largest Ethernet packet size and the default value. This is the typical setting for
	non-PPPoE, non-VPN connections, and is the default value for NETGEAR routers,
	adapters, and switches.

1492	Used in PPPoE environments.

1472	Maximum size to use for pinging. (Larger packets are fragmented.)

1468	Used in some DHCP environments.

1460	Usable by AOL if you do not have large email attachments, for example.

1436	Used in PPTP environments or with VPN.

1400	Maximum size for AOL DSL.

576	Typical value to connect to dial-up ISPs.

To change the MTU size:

1.Select Advanced > Setup > WAN Setup.

2.In the MTU Size field, enter a new size between 64 and 1500.

3.Click Apply to save the settings.

NETGEAR genie Advanced Home

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NETGEAR WNDR4500 user manual  To change the MTU size Select Advanced Setup WAN Setup, Common MTU Sizes

Contents

N900 Wireless Dual Band Gigabit Router WNDR4500 October 2013 East Plumeria Drive San Jose, CA Support Contents USB Storage Advanced Settings Appendix a Supplemental Information Hardware Setup Getting to know your router Unpack Your Router Position Your Router Hardware Features Front Panel LED Back Panel Label Connecting to the router Getting Started with Netgear Genie Wireless Devices and Security Settings Router Setup PreparationTypes of Logins and Access Use Standard TCP/IP Properties for Dhcp  To use Netgear genie to set up your router Netgear genie SetupBrowse to http//routerlogin.net Use Netgear genie after Installation Upgrade Router Firmware Router Dashboard Basic Home Screen  To use WPS to join the wireless network Add Wireless Devices or Computers to Your NetworkWi-Fi Protected Setup WPS Method Manual Method Netgear genie Basic Settings Your Internet connection and network Internet Setup Screen Fields Internet SetupDoes Your ISP Require a Login? Answer either yes or no Internet IP Address Attached Devices Parental Controls ReadySHARE USB Storage Basic Wireless Settings  To view or change basic wireless settings Wireless Settings Screen Fields Region Selection Security Options Settings Wireless Network GHz b/g/n and 5.0 GHz a/nChange WPA Security Option and Passphrase  To set up a guest network Guest Networks Guest Network Wireless Security Options WPA Encryption Specifying custom settings Netgear genie Advanced Home Setup Wizard Select Advanced WPS Wizard WPS WizardSelect either Push Button or PIN Number Setup Menu WAN Setup  To set up a default DMZ server Default DMZ ServerChange the MTU Size  To change the MTU size Select Advanced Setup WAN Setup Common MTU Sizes LAN Setup  To change the LAN settings Use the Router as a Dhcp Server LAN Setup Screen SettingsLAN TCP/IP Setup Use Router as a Dhcp Server Address Reservation  To reserve an IP address Enable WMM QoS for Wireless Multimedia Applications Quality of Service QoS SetupSet Up QoS for Internet Access QoS for Applications and Online Gaming  To create a QoS policy for applications and online games QoS for a Router LAN Port Click the Add Priority Rule button QoS for a MAC Address Click Add Priority Rule Editing or Deleting an Existing QoS Policy  To edit or delete a QoS policy Accessing and configuring a USB storage USB Storage USB Drive Requirements ReadySHARE AccessFile-Sharing Scenarios Sharing Large Files over the Internet Sharing PhotosStoring Files in a Central Location for Printing  To share files with your friends and family Basic Settings  To access your USB device Add or Edit a Network Folder USB Storage Advanced Settings Safely Remove a USB Drive Available Network Folders Media Server Settings Specify Approved USB Devices Select the Allow only approved devices check box Connect to the USB Drive from a Remote Computer Access the Router’s USB Drive Remotely Using FTP To connect to the router’s USB drive using a web browser Ftp//10.1.65.4 ReadySHARE Printer  To set up ReadySHARE Printer ReadySHARE Printer N900 Wireless Dual Band Gigabit Router WNDR4500 N900 Wireless Dual Band Gigabit Router WNDR4500 N900 Wireless Dual Band Gigabit Router WNDR4500 N900 Wireless Dual Band Gigabit Router WNDR4500 USB Control Center Utility Control Center Configuration USB Printer USB Speaker Scan with a Multi-Function Printer To control a USB speaker Desktop Netgear genie Keeping unwanted content out of your network Security  To delete a keyword or domain Keyword Blocking of Http Traffic To specify a trusted computer Block Services Port Filtering  To block services N900 Wireless Dual Band Gigabit Router WNDR4500 Schedule Blocking  To schedule blocking  To set up email notifications Security Event Email Notifications Administration Managing your network Upgrade the Router Firmware Router Information Internet Provider WAN SetupView Router Status Hardware Version. The router model Statistics Button System up time and poll interval statistics Connection Status Button View connection status information Wireless Settings 2.4 GHz and 5 GHz View Logs of Web Access or Attempted Web Access Guest Network 2.4 GHz and 5 GHz N900 Wireless Dual Band Gigabit Router WNDR4500 Restore Configuration Settings Manage the Configuration FileBack Up Settings  To restore configuration settings that you backed up Erase Set Password Password Recovery  To set up Time Machine Set Up Time MachineTime Machine Access the Connected USB Hard Drive  To access the drive Time Machine Before You Back up a Large Amount of Data N900 Wireless Dual Band Gigabit Router WNDR4500 Select Guid Partition Table or Master Boot Record MBR Change the Partition Scheme Advanced Settings Advanced Wireless Settings Wireless Repeating Function WDS Wireless repeating scenario Wireless Repeating Function Set Up the Base Station  To set up the base station Set Up a Repeater Unit  To configure the router as a repeater unit Remote Computer Access Basics Port Forwarding and Triggering Port Triggering to Open Incoming Ports Destination port number Port Forwarding to Permit External Host Communications How Port Forwarding Differs from Port Triggering Set Up Port Forwarding to Local Servers  To set up port forwarding Add a Custom Service Application Example Making a Local Web Server Public Click Edit Service or Delete ServiceEditing or Deleting a Port Forwarding Entry  To edit or delete a port forwarding entry Set Up Port Triggering Universal Plug and Play on 100 Dynamic DNS 102 Static Routes  To set up a static route Remote Management USB Settings Universal Plug and Play  To turn on Universal Plug and Play  To set up an IPv6 Internet connection type IPv6 Traffic Meter Troubleshooting Quick Tips Wireless SettingsNetwork Settings Sequence to Restart Your Network Power/Test LED Is Off or Blinking Troubleshooting with the LEDsPower/Test LED Stays Amber Internet or Ethernet Port LEDs Are Off Wireless LEDs Are OffLEDs Never Turn Off Push N Connect WPS Button Blinks Amber Cannot Access the Internet Cannot Log In to the Router 115 Select Administration Router Status Troubleshooting PPPoETroubleshooting Internet Browsing  To troubleshoot a PPPoE connection Wireless Signal Strength Wireless ConnectivityRestore the Factory Settings and Password Changes Not Saved Test the LAN Path to Your Router Troubleshoot Your Network Using the Ping Utility To ping the router from a running Windows PC Test the Path from Your Computer to a Remote Device Factory Settings Supplemental Information 121 Technical Specifications WNDR4500 Router specifications 123 Netgear Dual Band Wireless Notification of Compliance Industry Canada Interference Reduction Table Index 127 128 129 130