D-Link DIR-651 manual Troubleshooting

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Section 6 - Troubleshooting

3. Why can’t I connect to certain sites or send and receive emails when connecting through my router?

If you are having a problem sending or receiving email, or connecting to secure sites such as eBay, banking sites, and Hotmail, we suggest lowering the MTU in increments of ten (Ex. 1492, 1482, 1472, etc).

Note: AOL DSL+ users must use MTU of 1400.

To find the proper MTU Size, you’ll have to do a special ping of the destination you’re trying to go to. A destination could be another computer, or a URL.

•Click on Start and then click Run.

•Windows® 95, 98, and Me users type in command (Windows NT, 2000, XP, Vista® and 7 users type in cmd) and press Enter (or click OK).

•Once the window opens, you’ll need to do a special ping. Use the following syntax: ping [url] [-f][-l] [MTU value]

Example: ping yahoo.com -f -l 1472

D-Link DIR-651 User Manual

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Contents Page Preface Manual RevisionsTrademarks Revision Date DescriptionTable of Contents Wireless Security Connect to a Wireless NetworkWireless Basics Warranty RegistrationProductPackageOverviewContents Browser Requirements System RequirementsComputer with the following Introduction Total PerformanceFeatures Hardware Overview ConnectionsLEDs Installation Before you BeginWireless Installation Considerations Getting Started Configuration Web-based Configuration UtilitySetup Wizard Click Launch Internet Connection Setup Wizard to beginConfiguration Configuration Configuration Manual Configuration Host Name PrimaryServer MAC AddressInternet Setup PPPoE DSLReconnect Mode Select either Always-on,On-Demand, or Manual PptpL2TP MaskStatic assigned by ISP Schedule Wireless SettingsWireless Channel Mode Channel Width Network Settings Enable Dhcp NetBIOSNetBIOS Mode From WANDhcp Reservation ClientsVirtual Server Schedules section Port Forwarding Application Rules QoS Engine SpeedPage Network Filters Access Control Access Control WizardPage Page Configure Website Select Allow or Deny Filter Below Website FilterInbound Filter Action Select Allow or DenyFirewall Settings Application Level Gateway Configuration Routing Advanced Wireless Settings Transmit Power Set the transmit power of the antennasWi-Fi Protected Setup WPS Enable Enable the Wi-Fi Protected Setup featureAdvanced Network Settings Guest Zone Administrator Settings Time Settings Time Zone Select the Time Zone from the drop-down menuSysLog Check this box to send the router logs to a SysLog ServerEmail Settings Authentication authenticationSystem Settings Update Firmware Language PackDdns System Check Schedules Wireless LAN Device InformationSave Log LogRefresh Stats Internet Sessions Wireless Support Wireless Security What is WPA?Wireless Security Setup Wizard Wireless Security Setup WizardPage Configure WPA-Personal PSK Configure WPA-Enterprise Radius Page Connect to a Wireless Network WindowsPage Page Windows Vista Configure Wireless Security Page Windows XP Configure WPA-PSK Page Troubleshooting Why can’t I access the web-based configuration utility?What can I do if I forgot my password? Troubleshooting Page Why D-Link Wireless? Wireless BasicsWhat is Wireless? How does wireless work? Wireless Local Area Network WlanWireless Personal Area Network Wpan Who uses wireless?Where is wireless used? Centralize your router or Access PointTips Eliminate InterferenceWireless Modes Networking Basics Check your IP addressStatically Assign an IP address StepTechnical Specifications Contacting Technical Support Http//support.dlink.com Http//support.dlink.caWarranty Limited WarrantySubmitting a Claim Limited Software WarrantyNon-Applicability of Warranty What Is Not Covered Disclaimer of Other WarrantiesLimitation of Liability Governing LawTrademarks Copyright StatementFCC Radiation Exposure Statement FCC StatementFCC Caution Industry Canada Statement Radiation Exposure StatementRegistration

DIR-651 specifications

The D-Link DIR-651 is a versatile wireless router designed to offer a reliable and high-performance networking solution for home and small office environments. With its robust feature set, this device stands out as an excellent option for users seeking a seamless internet experience.

At the core of the DIR-651 is its dual-band capability, which operates on both the 2.4GHz and 5GHz frequency bands. This dual-band functionality allows users to optimize their wireless connections, reducing interference and ensuring smoother performance for bandwidth-intensive applications such as online gaming, HD streaming, and video conferencing. The router supports IEEE 802.11ac standards, delivering data transfer rates of up to 1200 Mbps.

One of the standout features of the DIR-651 is its internal antenna design, which enhances signal strength and coverage throughout your home or office. This enables users to enjoy stable connections even in large spaces, minimizing dead zones and ensuring that all devices connected to the network have reliable access to the internet.

The DIR-651 is equipped with multiple Fast Ethernet ports, allowing for wired connections to desktop computers, gaming consoles, and other devices. This is particularly beneficial for users who prioritize speed and stability over wireless connections for critical applications. Additionally, the router supports advanced Quality of Service (QoS) features, which allow users to prioritize bandwidth for specific applications, ensuring optimal performance for critical tasks.

Security is a top priority for the DIR-651, which comes with advanced security protocols including WPA/WPA2 encryption. This helps protect your network from unauthorized access and ensures that your connection remains secure. The router also features a built-in firewall and supports virtual private network (VPN) functionality, adding another layer of security for users concerned about online privacy.

Setup and management of the DIR-651 is user-friendly, thanks to its intuitive web interface and D-Link's DNS-based dynamic DNS service. The router can be configured easily via a web browser, and users can monitor their network traffic and manage connected devices with a few clicks.

Overall, the D-Link DIR-651 combines advanced technologies and features to provide users with a fast, reliable, and secure networking solution. Whether for streaming, gaming, or general web browsing, this router is designed to meet the demands of today's digital lifestyle, making it a valuable addition to any home or small office network.