Question about D-Link DI 514 Wireless Router (DI-514)

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Slow internet responses

Internet supplier says MTU size needs to be set to 1400- what does that mean?how do I do it?

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MTU Means Maximum transmission unit In computer networking, the term Maximum Transmission Unit (MTU) refers to the size (in bytes) of the largest packet that a given layer of a communications protocol can pass onwards. MTU parameters usually appear in association with a communications interface (NIC, serial port, etc.). The MTU may be fixed by standards (as is the case with Ethernet) or decided at connect time (as is usually the case with point-to-point serial links). A higher MTU brings higher bandwidth efficiency. However, large packets can block up a slow interface for some time, increasing the lag for further packets. For example, a 1500 byte packet, the largest allowed by Ethernet at the network layer (and hence most of the Internet), would tie up a 14.4k modem for about one second

Posted on Feb 26, 2008

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The router is very slow after reset


Try changing MTU size on the router and see if that works.
Connect the computer to the router.
Open the setup page of the router.
On the setup page you will see MTU. Change it to manual and size to 1365.
Save the settings AND power cycle router.

First connect the computer directly to the modem and make sure that your modem is working properly.
If you are getting slow internet through the modem then you will need to contact your Internet service provider.

Make sure that your router is running on the latest firmware.
See How to upgrade firmware on the router.
After upgrading firmware, reset and reconfigure it.

May 18, 2012 | Linksys WRT Computers & Internet

2 Answers

Slow connection, how do I fix it?


Reduce the MTU settings on the router. You will need to open the set up page of the router. On the set up page , you will find the MTU set to Auto. Change it to manual and change the size to 1400. save the settings.
Also upgrade the firmware of the router.
Do you have any computer connected to the router ? If not then connect the computer to the router. download the firmware of the router.
Upgrade the firmware.
After upgrading the firmware , you will need to reset the router.
Once you reset the router, it will lose all the settings and you will need to reconfigure the router.

Click here
step by step instructions

Mar 31, 2010 | Linksys Wireless-G WRT54G Router

1 Answer

Resetting problem


Hi!

The problem that you are experiencing is an intermittent internet connection. This has something to do with your router's MTU settings (Maximum Transmission Unit). Lowering it down can fix the issue. Some ISP's have their own dedicated MTU but some just use the default values. Its better to ask your ISP what the right MTU to be used on your router.

Lowering MTU

1. Access your router's Setup Page or Admin Page through Internet Explorer. Type http://192.168.1.1 press enter. It will prompt you for username and password. By default type admin for username and password.

2. If you have the router's setup page opened, look for MTU settings. Default value is Automatic (1500). Set it to Manual MTU and set the size to 1492 and save the settings. Also check if you have there an option like "Keep Alive" and you need to select that.

3. Reboot your router after reducing the size of MTU. Observe the connection again if the same problem persists.

Note: If the MTU value 1492 didn't help, try these values; 1463 and 1400

Good Luck

Jul 25, 2009 | Computers & Internet

1 Answer

Why dose my internet stopworking with my netgear


1. Access the web-based utility of the router.

a. Please open any web browser like Internet Explorer or Netscape Navigator.
b. Connect to the router by typing http://routerlogin.com/basicsetting.htm or http://192.168.1.1 in the address field and click Enter or Return key.
c. A window will prompt for a user name and password. The default username is "admin" and the default password is "password".

Note: If it does not take password as the password, you might have changed it when you have run the NETGEAR Setup CD so please try other passwords. If you cannot remember the password, you need to reset the router and run the Setup CD to reconfigure it.

2. Adjust the MTU setting.

a. Click on the WAN Setup under Advanced tab.
b. Lower down the MTU size to 1492, 1400, 1358 or 1300.
c. Click on the Apply button.

Note: You may verify from your ISP the recommended MTU size you can use.

Jun 23, 2009 | NetGear RangeMax WPN824 Router

2 Answers

Internet speed is very slow with NET GEAR WGR614 router


MTU Adjustment

1. Access the web-based utility of the router.

a. Please open any web browser like Internet Explorer or Netscape Navigator.
b. Connect to the router by typing http://routerlogin.com/basicsetting.htm or http://192.168.1.1 in the address field and click Enter or Return key.
c. A window will prompt for a user name and password. The default username is "admin" and the default password is "password".

Note: If it does not take password as the password, you might have changed it when you have run the NETGEAR Setup CD so please try other passwords. If you cannot remember the password, you need to reset the router and run the Setup CD to reconfigure it.

2. Adjust the MTU setting.

a. Click on the WAN Setup under Advanced tab.
b. Lower down the MTU size to 1492, 1400, 1358 or 1300.
c. Click on the Apply button.

Note: You may verify from your ISP the recommended MTU size you can use.

Apr 02, 2009 | NetGear WGR614 Wireless Router

2 Answers

Netgear DG834v4 router No accesswhen downloading large files


All you need to do is lower down the MTU value of the router. By default it is set to Auto with a value of 1500. To reduce the MTU, open the router's admin page and look for MTU setting. Set it to Manual Value and set the size to 1492 if you have DSL internet, and 1463 if you have Cable Internet. 1400 for general.

Dec 02, 2008 | NetGear DG834G Router

1 Answer

Needs to know more about MTU size changes


Changing the MTU size to any "small" value is a bad idea -- compare it to running to the corner store every time that you need to take anything (milk, ice-cube) out of your refrigerator -- the "time" to go back-and-forth to the store (or the Internet) will be excessive, and "slow" down your productivity.

Aug 04, 2008 | NetGear DG814 DSL Modem Internet Gateway...

2 Answers

Slow Internet using Belkin Wireles G Plus MIMO


Try setting the MTU size to 1400 and also check if there's any firmware update for it if there is update the firmware.
Hope it help

Apr 22, 2008 | Belkin (F5D8231-4) Wireless Router...

1 Answer

MTU


MTU, Partial Loss of Internet Connection, and Performance MTU (Maximum Transmission Unit) is the largest packet a network device transmits. The best MTU setting for NETGEAR equipment is often just the default value. MTU is sometimes presented as something that can be easily changed to improve performance, but in practice this may cause problems. Leave MTU unchanged unless one of these situations applies: 1. You have problems connecting to your ISP or other Internet service, and their technical support (or NETGEAR's) recommends changing MTU. For example, these services may require an MTU change: * Yahoo email * MSN * AOL's DSL service 2. You use VPN, and have severe performance problems. 3. You used a program to "optimize" MTU for performance reasons, and now you have connectivity or performance problems. * An easy solution to most problems is to change MTU to 1400. * If you are willing to experiment, gradually reduce MTU as described in "Details of MTU", below. How to Change a Computer's MTU Size Note: If you change MTU on one computer, it is likely you will want to change it on your other computers, switches, and routers, as well. Instructions for changing MTU on other NETGEAR devices is found in the Reference Manuals. The third party Dr. TCP software can be used to change the MTU setting. 1. Download it from this link, choosing the zip file or the exe file at the top of the page. 2. Run the utility. 3. In the Adapter Settings pull down, select the Ethernet driver and adapter used to connect with the network. 4. In the MTU box, type the MTU size you are trying. 5. Click in any other box, without changing the data there. 6. Click Save. 7. Click Exit. 8. Restart the computer. Details About MTU A packet sent to a device larger than its MTU is broken into pieces. Ideally, MTU would be set to the same ? large ? value on all your computers, routers and switches, as well as on all the parts of the Internet that you access. But you cannot control the MTU on the Internet, and in practice the optimum MTU size on your LAN is related to your hardware, software, wireless interference, etc. * Tweaking MTU size may work well in one situation, but cause performance and connection problems in others. * When network devices with different MTU settings communicate, packets are fragmented to accommodate the one with the smallest MTU. * Windows XP sets MTU automatically, that is, it optimizes computer MTU for you. This Microsoft article explains resolving lack of connection to a broadband ISP using Windows XP: http://www.microsoft.com/windowsxp/using/networking/learnmore/ppoe.mspx * Once a network device fragments a packet, the data stays fragmented until arriving at the destination computer. Setting MTU size is a process of trial-and-error: start with the maximum value of 1500, then reduce the size until the problem goes away. Using one of these values is likely to solve problems caused by MTU size: * 1500. The largest Ethernet packet size; it is also the default value. This is the typical setting for non-PPPoE, non-VPN connections. The default value for NETGEAR routers, adapters and switches. * 1492. The size PPPoE prefers. * 1472. Maximum size to use for pinging. (Bigger packets are fragmented.) * 1468. The size DHCP prefers. * 1460. Usable by AOL if you don't have large email attachments, etc. * 1430. The size VPN and PPTP prefer. * 1400. Maximum size for AOL DSL. * 576. Typical value to connect to dial-up ISPs.

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