NETGEAR DGND3300 Universal Plug and Play

RangeMax Dual Band Wireless-N Modem Router DGND3300 User Manual

Fine-Tuning Your Network 6-7

v1.0, March 2009

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. Table 6- 2 describes common MTU sizes and applications.

To change the MTU size:

1. In the main menu, under Advanced, select WAN Setup.

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

3. Click Apply to save the new configuration.

Universal Plug and Play

Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, to

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.

Table6-2. 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 don't have large e-mail 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.

Note: If you use applications such as multiplayer gaming, peer-to-peer connections, real-

time communications such as instant messaging, or remote assistance (a feature in

Windows XP), you should enable UPnP.

Contents

Main Regulatory Compliance Information iii Europe EU Declaration of Conformity iv FCC Requirements for Operation in the United States FCC Information to User FCC Guidelines for Human Exposure v FCC Declaration Of Conformity Maximum Wireless Signal Rate Derived from IEEE Standard 802.11 Specifications RangeMax Dual Band Wireless-N Modem Router Product and Publication Details Contents Page Page Page About This Manual Conventions, Formats, and Scope How to Use This Manual How to Print This Manual Revision History Page Chapter 1 Configuring Your Internet Connection Using the Setup Manual Logging In to Your Modem Router Page Using the Setup Wizard Viewing or Manually Configuring Your ISP Settings The following table explains the fields in the Basic Settings screen. Configuring Your Internet Connection 1-7 Table1-1. Basic Settings screen fields Configuring ADSL Settings Note: For information about how to install ADSL filters, see the Setup Manual. 1-8 Configuring Your Internet Connection Table1-1. Basic Settings screen fields (continued) Page Page Chapter 2 Safeguarding Your Network Planning Your Wireless Network certified and WPA or WPA2 capable, and that they support WPS configuration. Wireless Placement and Range Guidelines Wireless Security Options Manually Configuring Your Wireless Settings Safeguarding Your Network 2-5 Table2-1. Wireless Settings Configuring WEP Wireless Security Page Configuring WPA, WPA2, or Mixed WPA2 + WPA Wireless Security Page Using Push 'N' Connect (WPS) to Configure Your Wireless Network Using a WPS Button to Add a WPS Client Using PIN Entry to Add a WPS Client Configuring Advanced WPS Settings Connecting Additional Wireless Client Devices After WPS Setup Adding More WPS Clients Adding Both WPS and Non-WPS Clients Restricting Access to Your Modem Router Page Page Chapter 3 Protecting Your Network Protecting Access to Your Modem Router Changing the Built-In Password Restricting Access by MAC Address Page Blocking Access to Internet Sites Page Firewall Rules Page 3-8 Protecting Your Network Blocking Access to Internet Services Table3-1. Adding or Editing Firewall Service Rules (continued) Page Scheduling Blocking Viewing Logs of Web Access or Attempted Web Access Configuring E-mail Alert and Web Access Log Notifications Setting the Time Page Chapter 4 Using Network Monitoring Tools Upgrading the Firmware Manually Checking for Firmware Upgrades Page Viewing Modem Router Status Information Using Network Monitoring Tools 4-5 Table4-1. Modem Router Status Fields Connection Status To view the connection status, on the Router Status screen, click Connection Status. The following table describes the connection status settings. Statistics The following table describes the modem router statistics. To view statistics, on the Router Status screen, click Show Statistics. Viewing a List of Attached Devices Managing the Configuration File Backing Up and Restoring the Configuration Erasing the Configuration Running Diagnostic Utilities and Rebooting the Modem Router Enabling Remote Management Access Page Page Chapter 5 Customizing Your Network Settings Using the LAN Setup Options Page Customizing Your Network Settings 5-3 Table5-1. LAN Setup Using the Modem Router as a DHCP Server Address Reservation Using a Dynamic DNS Service Page Customizing Your Network Settings 5-7 Configuring the WAN Setup Options The WAN Setup fields are described in the following table: Figure 5-3 Table5-2. WAN Setup Settings Setting Up a Default DMZ Server Setting up Quality of Service (QoS) Configuring QoS for Internet Access Page Page Page Editing or Deleting an Existing QoS Policy Configuring Static Routes Page Wireless Repeating (Also Called WDS) Wireless Repeating Function Setting Up the Base Station Setting Up a Repeater Unit Page Chapter 6 Fine-Tuning Your Network Assessing Your Speed Requirements Optimizing Your Network Bandwidth Page Optimizing Wireless Performance Changing the MTU Size Universal Plug and Play Page Chapter 7 Troubleshooting Quick Tips Troubleshooting with the LEDs Troubleshooting 7-3 The Wireless LEDs are lit. If any of the above conditions does not occur, see the following table. Table7-2. Troubleshooting with the LEDs Cannot Access the Router Menu Cannot Access the Internet Checking the Configuration Checking the WAN IP Address Page Troubleshooting a Network Using the Ping Utility Testing the LAN Path to Your Router Testing the Path from Your Computer to a Remote Device Problems with Date and Time Wireless Connectivity Viewing Available Networks Appendix A Default Configuration and Technical Specifications Restoring the Factory Configuration Settings Using the Restore Factory Settings Button A-2 Default Configuration and Technical Specifications TableA-1. Default Configuration Settings Technical Specifications Default Configuration and Technical Specifications A-3 TableA-1. Specifications TableA-1. Default Configuration Settings (continued) Page Appendix B Related Documents In addition, you can find initial setup instructions for your modem router in the Setup Manual. Page Index-1 Index A B C D E F G H I N O P Q R T U V W