Question about 2wire 1800HG Router (RG1800HG00)

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MTU problem I have a Voyager 1250 2wire - works fine except I cannot get access to any emails. How do I change the MTU from 1500 to 1400?

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  • Anonymous Jun 03, 2008

    I have a Voyager 2wire router and I just changed to Talk Talk as IP and although I can get access to all web pages I can't access Hotmail. The system freezes after log on. I can download email from Demon: but it won't let me send a Demonb reply. This has to be a compatibility problem between the 2wire system and the IP but the IP denies all knowledge of it

  • Arranblonde Jun 14, 2008

    same problem with talktalk and the BT1800. Previous ISP was fine. I think the solution is to change the MTU on the router, but not sure how this is done. Have tried all the settings on the Router setup pages

  • malcopopolo Jun 28, 2008

    Hi I have the same problem with talktalk with my 2wire 1800hg.
    Luckily i have a cheap non wireless origo router and this works by default.
    the default mtu is 1492.
    I also tried changing the mtu on the pc with drtcp but this did not work.
    you may all be better off considering another router, not ideal but you could always sell the 2wire to a someone else!

    If anyone does have a soultion please advise.


  • Mark Gil
    Mark Gil May 11, 2010

    can you access the router user interface?

  • Anonymous Mar 13, 2014

    change MTU to 1500

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After some research!
you can change the upstream MTU
connect to your router with its ip address put /management after.
example 10.0.0.2/management. go to advance - configure services.
the last entry should relate to MTU. If it is not there then you ahve a custom Frimware loaded. Yhis is the case for me which is 3.5.5 I have contacted 2wire.net and requested a suitable firmware. If i ahve no response then a new router it is.....

Posted on Jun 28, 2008

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Posted on Jan 02, 2017

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1) Use a computer wired to the router.
2) Launch a browser and type in 192.168.1.1, leave the username blank and the password is admin or the password you have set when you first configured the router.
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1 Answer

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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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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.

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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.

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1 Answer

CanĀ“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.

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