MTU Setting for ATT Cable

AbecX · 11-29-2002, 05:05 PM

What do you guys use/recommend to get the best speed possible.

evil jose · 11-29-2002, 05:12 PM

1500 is default right?

AbecX · 11-29-2002, 05:21 PM

Quote:

Originally posted by evil jose
1500 is default right?

Currently thats what I have mine set at. You didnt have my box to find out did you, jose?

evil jose · 11-29-2002, 06:20 PM

Quote:

Originally posted by AbecX
Currently thats what I have mine set at. You didnt have my box to find out did you, jose?

We have to configure various routers for an MTU of 1492 sometimes when people have trouble accessing our website at work. Weird issue. How much of a difference are you expecting from playing around with the MTU setting?

AbecX · 11-29-2002, 06:43 PM

Well it can fix certain connectivty issuse and speed up transfer rates, just ask whitelightning about his issue he had a while back

I just want to make sure its set as optimal is it can be since I play a lot of diablo 2 and a I hate lag, I hate lag with a vengeance, just a few seconds of it can kill experience points I racked up over the course of an hour or two period

01WhiteCobra · 11-29-2002, 07:35 PM

At the command prompt type in

ping -f -l [packetsize] [www]

packetsize= start at 1500 and work your way down until you stop seeing "Packet needs to be fragmented, but DF set". Add 28 to that number (exclude 20 bytes for IP and ICMP which is 8 bytes headers).

the -f flag stops it from fragmenting, the -l is the packetsize. Thus the largest packet going through is what you set your MTU to.

bpenning · 12-02-2002, 10:45 PM

http://www.speedguide.net has a set of registry tweeks that work great for Windows XP and Windows 2000 for cable modem and DSL connections...

MoonDog · 12-03-2002, 10:20 AM

I personally like DSL Reports better. Take the Tweak test http://www.dslreports.com/tweaks and it will tell you what needs to be changed to best optimize your settings.

11-29-2002, 05:05 PM	#1
AbecX ¯\(º_o)/¯ Join Date: Nov 2001 Location: Las Colinas Posts: 25,384	MTU Setting for ATT Cable What do you guys use/recommend to get the best speed possible. __________________

11-29-2002, 05:12 PM	#2
evil jose Rolling with the homies Join Date: Apr 2000 Location: Oak Cliff... that's my hood... Posts: 42,418	1500 is default right? __________________ 2008 Lincoln MKZ 1995 Mustang GT Convertible 2002 F-150 SuperCrew 1995 Ford Taurus SHO 2003 Yamaha R6

11-29-2002, 06:43 PM	#5
AbecX ¯\(º_o)/¯ Join Date: Nov 2001 Location: Las Colinas Posts: 25,384	Well it can fix certain connectivty issuse and speed up transfer rates, just ask whitelightning about his issue he had a while back I just want to make sure its set as optimal is it can be since I play a lot of diablo 2 and a I hate lag, I hate lag with a vengeance, just a few seconds of it can kill experience points I racked up over the course of an hour or two period __________________

12-03-2002, 10:20 AM	#8
MoonDog Yeah, whatever.... Join Date: Sep 2002 Location: In the backyard grilling up a steak Posts: 5,096	I personally like DSL Reports better. Take the Tweak test http://www.dslreports.com/tweaks and it will tell you what needs to be changed to best optimize your settings. __________________ Disclaimer: No other posters were flamed, ridiculed, persecuted, belittled, berated, judged or otherwise in the making of the above-posted reply. It is with respect all are asked to observe this and to provide the same courtesy bestowed upon those who have posted and those who will post. Yada, Yada, doublespeak and so forth!

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11-29-2002, 07:35 PM	#6
01WhiteCobra No Cerveza... No Trabajo Join Date: Jun 2002 Location: Where's my beer? Posts: 21,892	At the command prompt type in ping -f -l [packetsize] [www] packetsize= start at 1500 and work your way down until you stop seeing "Packet needs to be fragmented, but DF set". Add 28 to that number (exclude 20 bytes for IP and ICMP which is 8 bytes headers). the -f flag stops it from fragmenting, the -l is the packetsize. Thus the largest packet going through is what you set your MTU to.

12-02-2002, 10:45 PM	#7
bpenning Punk Ass Newbie Join Date: May 2002 Location: Frisco, TX. Posts: 46	http://www.speedguide.net has a set of registry tweeks that work great for Windows XP and Windows 2000 for cable modem and DSL connections...