Question about ASUS RTN56U Wireless Router

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Mtu settings cannot connect several sites

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  • ASUS Master
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The default value is fine MTU of 1500. I doubt that is the reason you can't connect to a site. What sites can you not connect to and what error/messages do you get?

Posted on May 03, 2013

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Isn't there an internet site where i can change my MTU settings on SURBboard sb5101, i need the settings to be at least 1364


It is not possible to change the MTU settings for cable modem... MTU settings are applicable only for ADSL connections like AtT or Verizon...

Dec 07, 2010 | Arris SURFboard® SB5101 Cable Modem

Tip

Xbox Live - MTU Error


Xbox 360 MTU errors

This issue occurs if your router or the gateway is incompatible with Xbox Live, or if your router or the gateway has an incorrect MTU setting. Note: Xbox Live requires a minimum MTU setting of 1364. We recommend that you try out the steps shown below.

Things to try:
1. Ensure that you have properly setup your connection to Live by using the Connectivity Wizard http://www.xbox.com/en-US/support/connecttolive/xbox360/connectionmethods/webconnectivitywizard.htm
2. Visit the following Web site to determine whether you have the correct firmware version that has been certified as compatible: http://www.xbox.com/en-US/live/connect/routerlanding.htm
3. See the router or gateway instruction manual for information about how to change the MTU setting to 1364, to do this, or to determine whether your router supports this feature, see the router support documentation or contact support for your router device.
4. If you share a connection with a router and a modem, try a direct connection without the router.

For additional information on this topic refer to the following KB article: http://support.microsoft.com/kb/908882/

on Sep 30, 2008 | Microsoft Xbox 360 Console

1 Answer

I need to change the MTU settings


To change your MTU settings download a program called DrTCP (google for it) then change the MTU size of your Internet connection, try 1465 and keep dropping it until you get a figure that works...

You can also check out xbox support site for more information on MTU settings here

Feb 23, 2010 | Arris SURFboard SBG900 Wireless Router...

1 Answer

How to change mtu settings to get x box live?


heres a good site that discusses adjusting the MTU(maximum transmission unit)
Usually in most cases MTU of 1500will work just fine, I suggest using DrTCP a free program available online to help you tweak your settings


http://help.expedient.com/broadband/mtu.shtml


Dont forget to rate the advice.
http://www.aa1consulting.com

Aug 03, 2009 | Belkin Wireless G Plus MIMO (F5D9230-4)...

1 Answer

Speedstream exceptionally slow


who is your broadband provider?

Make sure you have set the MTU right in the modem, if this is set wrong it will stop you accessing certain website especially secure websites i.e online banks & possibly windows update. Most providers use MTU 1458, aol used to user 1400 now recommend 1450.

Feb 08, 2008 | Siemens SpeedStream Modem (4100) (SS4100)

1 Answer

I have 20mb broadband but only 300kbs download speed


I personally have never known that changing the MTU setting can speed up your connection, as the MTU is the maximum transmition units that is sent to your pc from each web site and if the MTU setting is incorrect then some web sites will not load on your explorer page, the speed at which you download the page will not make any difference.

If you are supposed to get 20MB speed then you must be on cable and not ADSL as ADSL is a max of 8MB, so i would ring up Virgin or whoever and check the speed you should really be getting.

See these details posted on the netgear site, and you'll notice there is no mention of speed:-

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: How-To Configure Broadband Connections Using PPPoE.
  • 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.

Nov 22, 2007 | Microsoft Windows XP Home Edition

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.

Feb 19, 2006 | NetGear DG814 DSL Modem Internet Gateway...

1 Answer

Connection problems


The current firmware allows the maximum transmission unit to be changed if needed. 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). What is my MTU? - 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. Step 1 Click on Start and then click Run. Step 2 Windows 95, 98, and ME users type in command (Windows NT, 2000, and XP users type in cmd) and press Enter (or click OK). Step 3 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 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. Note: AOL DSL+ users must use MTU of 1400. To change the MTU rate follow the steps below: For the DI-514, DI-524, DI-604, DI-614+, DI-624, DI-754, DI-764, DI-774, and DI-784: Step 1 Open your browser, enter the IP address of your router (192.168.0.1) and click OK. Step 2 Enter your username (admin) and password (blank by default). Click OK to enter the web configuration page for the device. Step 3 Click on the Home tab and go to the WAN tab. Step 4 The default MTU is 1500, to change this enter the number in the MTU field and click the Apply button to save your settings. Step 5 Test your email. If changing the MTU does not resolve the problem, continue changing the MTU in increments of ten. Note: If you have the European version of the DI-604, this procedure will not work. If you do not have an MTU option, please upgrade your firmware.

Feb 16, 2006 | D-Link Air Xpert DI-774 Wireless Router

1 Answer

Connection problems


The current firmware allows the maximum transmission unit to be changed if needed. 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). What is my MTU? - 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. Step 1 Click on Start and then click Run. Step 2 Windows 95, 98, and ME users type in command (Windows NT, 2000, and XP users type in cmd) and press Enter (or click OK). Step 3 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 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. Note: AOL DSL+ users must use MTU of 1400. To change the MTU rate follow the steps below: For the DI-514, DI-524, DI-604, DI-614+, DI-624, DI-754, DI-764, DI-774, and DI-784: Step 1 Open your browser, enter the IP address of your router (192.168.0.1) and click OK. Step 2 Enter your username (admin) and password (blank by default). Click OK to enter the web configuration page for the device. Step 3 Click on the Home tab and go to the WAN tab. Step 4 The default MTU is 1500, to change this enter the number in the MTU field and click the Apply button to save your settings. Step 5 Test your email. If changing the MTU does not resolve the problem, continue changing the MTU in increments of ten. Note: If you have the European version of the DI-604, this procedure will not work. If you do not have an MTU option, please upgrade your firmware.

Feb 16, 2006 | D-Link AirPro DI-764 Wireless Router

1 Answer

Can´t connect to certain sites


Step 1 Open your browser, enter the IP address of your router (192.168.0.1) and click OK. Step 2 Enter your username (admin) and password (blank by default). Click OK to enter the web configuration page for the device. Step 3 Click on the Home tab and go to the WAN tab. Step 4 The default MTU is 1500, to change this enter the number in the MTU field and click the Apply button to save your settings. Step 5 Test your email. If changing the MTU does not resolve the problem, continue changing the MTU in increments of ten.

Feb 16, 2006 | D-Link Express EtherNetwork DI-604 Router

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