D-Link DIR-412 manual Troubleshooting

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Section 6 - Troubleshooting

You should start at 1472 and work your way down by 10 each time. Once you get a reply, go up by 2 until you get a fragmented packet. Take that value and add 28 to the value to account for the various TCP/IP headers. For example, lets say that 1452 was the proper value, the actual MTU size would be 1480, which is the optimum for the network we’re working with (1452+28=1480).

Once you find your MTU, you can now configure your router with the proper MTU size.

To change the MTU rate on your router follow the steps below:

•Open your browser, enter the IP address of your router (192.168.0.1) and click OK.

•Enter your username (admin) and password (blank by default). Click OK to enter the web configuration page for the device.

•Click on Setup>Internet and then click Manual Internet Connection Setup.

• To change the MTU enter the number in the MTU field and click Save Settings to save your settings.

•Test your e-mail. If changing the MTU does not resolve the problem, continue changing the MTU in increments of ten.

D-Link DIR-412 User Manual

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Contents Page Preface Manual RevisionsTrademarks Table of Contents 100 ProductPackageOverviewContents System Requirements Network RequirementsFeatures Hardware Overview ConnectionsOperating in WAN mode Top ViewSwitching Between WAN Mode/3G Router Mode Installation Before you BeginWireless Installation Considerations Connect to Cable/DSL WAN Mode Connect to a 3G Internet Service Configuration Web-based Configuration UtilityInternet Connection Setup Wizard 3G Mode Configuration Configuration Manual Configuration 3G Mode User Name Password Dial Number3G Internet Connection CountryInternet Connection Setup Wizard WAN Mode Configuration Configuration Configuration Configuration Other users may ignore these 2 settings Configuration Manual Configuration WAN Mode Static IP Address MAC AddressDynamic IP Address Dhcp Host NamePPPoE Username/Password Configuration Pptp Username/Password Address Mode Pptp IP Address Pptp Subnet MaskUsername Password Reconnect Mode Maximum Idle Time Configuration L2TP Username/Password User Name Password Reconnect ModeConfiguration Russia Pptp Dual Access Pptp SubnetAddress Configuration Russia PPPoE Dual Access Configuration Wireless Settings Manual Wireless Network Setup RateConfiguration Network Settings Dhcp Server Settings Dhcp Reservation Reservations List the routerClients Virtual Server Name IP Address SchedulePort Forwarding Application Rules Name TriggerFirewall QoS Engine SpeedNetwork Network Filters Dhcp Client ScheduleWebsite Filters Website URL ScheduleFirewall Settings Enable SPI DMZ HostFirewall Rules ProtocolAdvanced Wireless Settings Dtim IntervalBand Width Wi-Fi Protected Setup PIN SettingsAdvanced Network Settings UPnP WAN PingMulticast Streams Administrator Settings Time Settings Computer’s Time PC SettingsSaving Mail Settings To E-mail AddressSystem Settings Load Settings from Local Hard DriveReboot Device Update Firmware Testing DdnsSystem Check Schedules Days Time AddDevice Information General Displays the router’s time and firmware versionLogs Log TypePrevious Next Clear Statistics Internet Sessions Wireless Support Wireless Security What is WPA?Wireless Connection Setup Wizard Security Security Add Wireless Device with WPS Wizard Configure WPA-Personal PSK Select PSK from the PSK / EAP drop-down menuConfigure WPA-Enterprise Radius Connect to a Wireless Network Using WindowsSecurity Security Configure WPS Security Security Security Using Windows Vista Configure WPA/WPA2 Connecting to a Wireless Network Connect Using WCN Using Windows XP Configure WPA-PSK Connecting to a Wireless Network Troubleshooting Why can’t I access the web-based configuration utility?What can I do if I forgot my password? Ping url -f -l MTU value Troubleshooting Wireless Basics What is Wireless? Wireless Local Area Network WlanWireless Personal Area Network Wpan HomeSmall Office and Home Office Centralize your router or Access Point Eliminate InterferenceWireless Modes SecurityNetworking Basics Check your IP addressSetting Statically Assign an IP addressStep ConnectionsTechnical Specifications DimensionsContacting Technical Support For customers within the United StatesWarranty Limited WarrantyLimited Software Warranty Non-Applicability of WarrantyWhat Is Not Covered Disclaimer of Other WarrantiesLimitation of Liability Governing LawTrademarks Copyright StatementFederal Communication Commission Interference Statement CE Mark WarningImportant Note Industry Canada Statement Registration

DIR-412 specifications

The D-Link DIR-412 is a versatile and robust wireless router that caters to both home users and small office environments. Known for its reliability and ease of use, the DIR-412 provides an efficient networking solution with a range of features that enhance connectivity and security.

One of the main features of the D-Link DIR-412 is its support for IEEE 802.11n wireless technology, which enables high-speed data transfer rates. With a wireless speed of up to 300 Mbps, the DIR-412 facilitates seamless streaming, online gaming, and web browsing, ensuring that multiple devices can connect simultaneously without lag. This makes it an ideal choice for households with several users or for small businesses requiring a stable internet connection.

The router comes equipped with four 10/100 Ethernet ports that allow for wired connections to devices such as computers, printers, and gaming consoles. This functionality ensures that users can benefit from stable connections where necessary, while still enjoying the flexibility of wireless connectivity for mobile devices.

Security is a significant consideration with the DIR-412. It offers multiple levels of security, including WPA/WPA2 encryption. This protection ensures that the wireless network is safeguarded from unauthorized access, providing users with peace of mind as they connect their devices. Additionally, the router features a robust firewall that helps to fend off potential cyber threats and keep personal data secure.

Another noteworthy feature of the D-Link DIR-412 is its user-friendly web interface, which simplifies the setup process and ongoing management of the network. The Quick Setup Wizard walks users through the installation process, making it accessible even for those with limited technical knowledge. Furthermore, the router supports DHCP, allowing for easy IP address assignment to connected devices without manual configuration.

The DIR-412 also includes Quality of Service (QoS) capabilities, enabling users to prioritize bandwidth for specific applications or devices. This feature is particularly useful in environments where internet use is heavy and prioritizing tasks can lead to a better experience for critical applications like video conferencing or online gaming.

In summary, the D-Link DIR-412 is a feature-packed wireless router that accommodates the needs of both home users and small businesses. With robust wireless speeds, excellent security features, and easy management options, it stands out as a reliable choice in the competitive router market. Its combination of essential performance features and user-centric design makes it a valuable asset for anyone looking to enhance their networking capabilities.
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