Reviews:
 ·Charter
| [Troubleshooting] Optimal MTU setting on Clearwire? I'm an on-site computer technician and recently got a call from a client who has been using Clearwire (3G) for a few years. In the past month or so, navigating to Google and some pages within financial sites start loading then time out. Using Outlook Express to retrieve her POP Gmail times out as well. She has called Clearwire tech support a few times in the past month, they temporarily fixed her problem, but the trouble would start-up again within a few days. The last call they were unable to fix the problem and they recommended calling Microsoft. Instead she called me.
In troubleshooting I confirmed the problem happens with any browser, and her Outlook Express email settings are correct but time out.
After resetting the TCP/IP stack and several other tests and fixes, nothing fixed the problem. I ended up bring her tower to my office, connected it to my Charter cable broadband, and had no problems whatsoever.
So now I'm thinking it might be her MTU setting. What is the optimal MTU setting for the network adapter connected directly to the Clearwire modem (no router in-between). I've seen 1400 in searches, but they were all settings for the router. Is this the optimal setting for the network adapter as well? I will use Dr. TCP to change the MTU and hope for the best.
It's weird that the problem recently started, and that Clearwire was able to fix the issue temporarily. Of course it couldn't be a Clearwire issue. I suppose it could be a modem going bad.
TIA.
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Follow me on Twitter: @MyTechLife2 |
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ernliz
join:2001-11-25
Abilene, TX Reviews:
 ·Clearwire Wireless
| I may be wrong, but from what I've researched, MTU settings are practically irrelevant on Vista and Windows 7 systems. Probably the same on XP, since I get the same speedtest results on my iPhone, my XP, my Vista, and Windows 7 systems with the XP system set at 1400 MTU and the others in a mode of their own! |
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| It's a Windows XP system. |
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ernliz
join:2001-11-25
Abilene, TX Reviews:
·Clearwire Wireless
| In that case, use an MTU of 1400. I've used that on my XP systems in the past and the difference was slight, but it helped a bit. |
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| Going from no MTU setting to 1400 using Dr. TCP fixed the issue. Thanks. |
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