Question about Arris WR850G Router (DHWR850G)

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MTU settings anyone know how to change the MTU settings on a motoroloa wr850g router? trying to get it to allow xbox live (live works fine directly connected to the cable modem). The only MTU i can find in the wr850g web-based setup is grayed out.

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  • tphive Jul 01, 2008

    I've got the same thing, and still have yet to find a solution unfortunately. Hopefully something will turn up soon.

  • Anonymous Sep 29, 2008

    same here xbox fails the MTU test

  • Anonymous Sep 29, 2008

    My MTU has been working for months until today

  • stepf_awald Sep 29, 2008

    same problem

  • gunsniper24x Sep 30, 2008

    when I got my xbox 360 over a year ago work great until now.

  • Chris
    Chris Jan 24, 2009

    I'm having the same problem with my 360 and mtu on the motorola WR850G. I can't change the mtu in cable modem mode. It's really stupid.

  • Leonard707 Mar 12, 2009

    i have a wr850g and have had no problems but with one certain friend on xbox live i cannot connect with unless someone else sends the invite or someone else hosts the game....i read something about nat settings and have tried looking into that but can't find anywhere to change it...i did fix the problem a while back by messing with the router settings but for some reason it's happening again...any help?

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All of the documentation and firmware updates for Motorola's discontinued products are available in their Discontinued Products section which is here:
http://broadband.motorola.com/consumers/support/default.asp?supportSection=DiscontinuedProducts
Hope this helps. Otherwise repost with specifics and I will activate my second brain cell for your service:) Steve Medley

Posted on Oct 16, 2008

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I have a Motorola WR850G router which works just fine for broadband internet access for our laptop and our desktop. We are trying to connect xBox Live and we are getting an error message that Maximum...


Starting on page 3-3 of the WR850G user manual, there is a setting for "PPP MTU".
Whether or not this will change the overall MTU of the router is not clear. Apparently the default setting is "0", which I would guess is automatic. I would try changing the setting to 1500 and work your way down from there until xbox live is hopefully satisfied.
Good luck...

Dec 29, 2010 | Arris Wireless G Broadband Router (wr850g)

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

MTU settings not high enough for XBL ??????


The MTU or maximum transfer unit is configurable at the
modem that is bringing the internet service, in your case the Thomson tg782t modem, do not attempt to change the registry

Jul 09, 2010 | Microsoft Xbox 360 Console

2 Answers

Mtu settings


Two things needs to be cleared:

1) Which connection did you talking about LAN/WAN?

2) Xbox live may not be up yet, can you verify it?

Most home gateway routers can only change WAM MTU for certain connection type (PPPOE), and cannot set MTU for LAN and other WAN connection.

To change MTU for PPPOE, going to WAN connection setting, and you will see the MTU options box. But do not change it unless your ISP told you to do so.
So make sure Xbox live is online -- I am no Xbox fun so I have no idea how it works, but just guess from your message.

Jun 19, 2009 | Belkin (F5D7633UK4A) Wireless Router

1 Answer

Wr850g cant connect to xbox live


I posted a solution under a different problem, but similar. Basically you will need to pick a static IP for your xbox. Then set that IP address in the router web config >> routing >> DMZ IP address setting. Restart both router and xbox and bingo. Your xbox is now directly connected to your cable modem without the router problems preventing connectivity.

Jun 19, 2009 | Arris WR850GP Router

1 Answer

Have the n+ wireless router/modem trying to connect via a cable to xbox live but keep gettin insufficient MTU even though the actual MTU of the router is higher than required


You may have to use trial and error to find the best MTU fit:

MTU Default of 1500 to 1492
Tart the setting the MTU @ 1400

MTU setting. Xbox LIVE requires a minimum MTU setting of 1364.
The information your console sends and receives is broken up into "packets" for transmission over your network. MTU is a setting that controls the size of these packets. If it's too small, you won't be able to connect to Xbox LIVE.
Top Solutions Try these solutions in order. If you give each one a shot and you still can't connect, contact Xbox Customer Support. Note that they will ask you try the suggestions on this page first.
Solution 1: Check your router MTU settings Xbox LIVE requires a minimum MTU setting of 1364. Usually, you can change your MTU setting from your router configuration web page, which is supplied by your router manufacturer.
Learn how to find and use your router configuration page
Look for the MTU setting on the router configuration page. When you find it, set it to Auto or 1364 (or higher), save your settings, and then try to connect to Xbox LIVE again on your console.

Solution 2: Connect directly to the modem If your router's MTU is set correctly, try bypassing it by connecting your console directly to the modem. This will help determine whether there's a problem with your router or something else on your network.
Note
This may require you to move your console to a location close to your modem. This is a temporary arrangement, meant only to troubleshoot your connection. If your console is connected wirelessly, you'll need an Ethernet cable for this step.
To connect your console directly to your modem (wired connection):
  1. Find the Ethernet cable that runs between your console and the router.
  2. Unplug the cable from the router, leaving it connected to the console.
  3. Find the Ethernet cable that runs between the router and the modem.
  4. Unplug the cable from the modem, and plug the cable from your console in its place.
To connect your console directly to your modem (wireless connection):
  1. Unplug the USB connector for your adapter from the console. The adapter can remain attached to the console.
  2. Plug an Ethernet cable into the Ethernet port on the back of the console.
  3. Find the Ethernet cable that runs between your router and the modem.
  4. Unplug the cable from the modem, and plug the cable from your console in its place.
Try to connect to Xbox LIVE again. If it works, there may be an issue with your router. Double-check the MTU setting in solution 1 above. Also confirm that you're using a compatible router, and make sure it has the latest updates from the manufacturer. If the problem persists, you may want to try a different router.

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

May 06, 2009 | Belkin N1 Vision Router

1 Answer

Cannot connect xbox 360 to wireless router


If you use DSL I would also check to make sure you are not being port blocked by your ISP. Some will block you if you exceed bandwidth on a particular port rather than throttling you or shutting you down entirely.

Dec 29, 2008 | Linksys Wireless-G WRT54G Router

1 Answer

Xbox live is not working it keeps coming up with 'you need an active connection to play online or system link matches' but my connection is fi and none of my friends can play as well?


Suggestion: <b>MTU Error</b>

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/

Sep 30, 2008 | Video Game Consoles & Games

2 Answers

Mtu settings on xbox 360


ur xbox will be fine naw it was turned off by xbox for 24h on the 29 th

Sep 30, 2008 | Microsoft Xbox 360 Console

2 Answers

XBox 360 not compatible with Motorola WR850G


Motorola WR850G router may fail to connect to xbox live after update to firmware 6.1.4. I was able to correct the problem. My solution was
Go in xbox >> network config >> IP and use Static option. Set the xbox to an IP in the range allowed by your router configuration. The router IP config range is found in the router config web >> Lan section. Then I set my router config >> Routing >> DMZ IP Address setting to the xbox ip I just assigned to my xbox. Restart router using the restart button on the Basic page of router config. Restart your xbox and attempt to login to xbox live. This solved my problem.

As a side note, on the xbox networking test page, the xbox live status message will allows show they are aware of a problem with xbox live login. This is a lie. For that reason I postponed trying to fix my router problem thinking it was an xbox issue, it is not. Once you finally connect to xbox live you will still notice this incorrect message remains. Microsoft developers ****...

Dec 26, 2007 | Arris WR850GP Router

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