Speed it up MaxMTU and MaxMSS

dannjr · Post by **dannjr** » Tue Jul 11, 2000 2:55 am

MAKE SURE TO CHECK PAGE THREE THERE ARE ADDED SETTINGS.

I’ve been toying around with this for awhile now. The cable modem/DSL tweaks, and the PPPoE tweaks are Great, but you can get anywhere from 100kbps to 200kbps more out of your connection if you add this setting in the same spot in your registry as the string value MaxMTU..
the new string for cable to start is string value.
MaxMSS and set it to 1460 or lower,
MSS stands for Maximum Segment Size.
This has increased my connection by 190kbps.
I also have had the opportunity to play with this on a PPPoE DSL Connection this one takes a little more playing around with.
lower the MaxMTU to 1492 and put the
MaxMSS at about 1420 to start esp. if your on a Mindspring connection you don't want to blow up IE. Give it a try and if your not sure about the size just make it smaller than the values iv got here you should see a noticeable improvement right away. I know I have.
The OS that this has been tested on iswin95, win98 and win98SE IE 5.01 IE 5 and IE 4.01 sp2 and now IE5.5.
Let me know your findings Thanks.
This info comes out of the windows big book, and regedit.com and a whole bunch of other area’s now, and with the help of other members on this board along with the speedguide group. Without the members and themselves this topic would not exsist’s
let me know on the board if this helped your connection
[This message has been edited by dannjr (edited 07-12-2000).]
I also have the MSS values written in patch’s at http://microsyspro.com under a link called speed up your internet connection with MaxMSS

Had to edit:ADD ON
The server for the web site above had just been replaced and is going threw growing pains if you are not able to get there then go to this alternat site http://humlog.homestead.com/nicksconsulting/
Sorry for any inconvenience
Dan
I edited this because it was getting old and had to be refreshed Thanx

[This message has been edited by dannjr (edited 08-18-2000).]

[This message has been edited by dannjr (edited 09-15-2000).]

[This message has been edited by dannjr (edited 10-04-2000).]

Post by **Philip** » Tue Jul 11, 2000 9:42 am

I was playing with MaxMSS a couple of years back... At one time it was in the patches, however everyone jumped all over me that it is a bogus entry. I couldn't find documentation from MS on the exact syntax, besides MSS seems to be calculated automatically, so it's been thrown out.

If anyone finds reliable information (from MS) on the location of the entry in the registry, let us know.

clover · Post by **clover** » Tue Jul 11, 2000 9:52 am

Well.....I tried it and got about a 20% speed increase downloading, touching almost 50% at times, but this was during peak hour so it varied. Still, that's excellent

Thanks for the tip!

clover

dannjr · Post by **dannjr** » Tue Jul 11, 2000 2:42 pm

http://support.microsoft.com/support/kb/articles/q120/6/42.asp You wanted the link to Micr
osoft posted read carefully some connections it works infact a good amount of them it works on but if its two high the connection drops MaxMSS is based on what there connection is not a exact value.

Originally posted by Philip:
I was playing with MaxMSS a couple of years back... At one time it was in the patches, however everyone jumped all over me that it is a bogus entry. I couldn't find documentation from MS on the exact syntax, besides MSS seems to be calculated automatically, so it's been thrown out.

If anyone finds reliable information (from MS) on the location of the entry in the registry, let us know.

dannjr · Post by **dannjr** » Wed Jul 12, 2000 2:32 am

The links below are directly from Microsoft based on windows 2000 because the protocols are so Close to win98SE, That they just did things like they always do, and that’s when a new product comes out. The old library goes out the window. So if you believe everything from Microsoft then it may be real possible to get rid of the DefaultRcvWindow if I read it correct MSS can make up the difference. I'm not saying but you asked for some type of proof well if someone has a different Microsoft please let me know. Man I feel like I've been through a re-cert. test
Note: there is one thing that bothers me about all this that if the MTU drops across a network the MSS could stay up and could cause a real slow down there's supposed to be an article at NASA about a high MSS over MTU but I'm not quite sure about the OS they had.
http://support.microsoft.com/support/kb/articles/Q224/8/29.ASP?LN=EN-US&SD=gn&FR=0
http://support.microsoft.com/support/kb/articles/Q263/0/88.ASP?LN=EN-US&SD=gn&FR=0

http://support.microsoft.com/support/kb/articles/q264/8/83.ASP?LN=EN-US&SD=gn&FR=0

All the links on one page.
http://search.support.microsoft.com/kb/psssearch.asp?SPR=win2000&T=B&KT=ALL&T1=7d&LQ=Maximum+Segment+Size&PQ=PastQuery&S=F&A=T&DU=C&FR=0&D=ntrelease%2Bor%2Bierelease&LPR=%22windows +2000%22&LNG=ENG&VR=http%3A%2F%2Fsupport.microsoft.com%2Fsupport%3Bhttp%3A%2F%2Fsupport.microsoft.com%2Fservicedesks%2Fwebcasts&CAT=Support&VRL=ENG&SA=GN&Go.x=27&Go.y=23

I hope this helped it did me
Dan

Originally posted by Philip:
I was playing with MaxMSS a couple of years back... At one time it was in the patches, however everyone jumped all over me that it is a bogus entry. I couldn't find documentation from MS on the exact syntax, besides MSS seems to be calculated automatically, so it's been thrown out.

If anyone finds reliable information (from MS) on the location of the entry in the registry, let us know.

Post by **Philip** » Wed Jul 12, 2000 9:08 am

All of these articles talk about MSS (Maximum Segment Size)... I know exactly whaat MSS is, as I said I've used it in previous patches, my question was:

What is the exact syntax of the entry in the Windows Registry according to MS ?

id4rox · Post by **id4rox** » Wed Jul 12, 2000 11:03 am

Hey. I added MaxMSS with a value of 1460 to all the 000X (you said put it in the section with MaxMTU, i have like 5

) in HKLM,System\CurrentControlSet\Services\Class\NetTrans\ and i noticed no increase or decrease. I have pretty poopy RR in upstate NY. My test file, before i added the keys in it was 70KB/sec, after was 69KB/sec. Did I do it right, do I add MaxMSS to al lthe 000X keys that have a MaxMTU setting in it? my maxmtu is 1500 and the maxmss is 1460, or do i just add it to one of them, or what?

help!

dannjr · Post by **dannjr** » Wed Jul 12, 2000 1:33 pm

I sent you a email on this.
Do the ping thing speed guide has a good method for this in the advanced area to make certain your MTU String value is correct
if the MTU is to high MSS won't work and in some case's even though the MTU is correct you may have to lower it to get the Max out of MSS their are all sorts of opinions on MSS
out on the web that this setting can throw you a curve. with this one its not an exact science. make sure all your hardware is correct and that you don't have some type of software interfering with your connection 70 and 69k is real bad see if the cable company can put a booster on the line
well I hope what I sent helped let me know
but I really think theirs somthing else causing your bad connection
Dan

Originally posted by id4rox:
Hey. I added MaxMSS with a value of 1460 to all the 000X (you said put it in the section with MaxMTU, i have like 5 ) in HKLM,System\CurrentControlSet\Services\Class\NetTrans\ and i noticed no increase or decrease. I have pretty poopy RR in upstate NY. My test file, before i added the keys in it was 70KB/sec, after was 69KB/sec. Did I do it right, do I add MaxMSS to al lthe 000X keys that have a MaxMTU setting in it? my maxmtu is 1500 and the maxmss is 1460, or do i just add it to one of them, or what?

help!

dannjr · Post by **dannjr** » Wed Jul 12, 2000 1:49 pm

I sent you a email on this.
Do the ping thing speed guide has a good method for this in the advanced area to make certain your MTU String value is correct
if the MTU is to high MSS won't work and in some case's even though the MTU is correct you may have to lower it to get the Max out of MSS their are all sorts of opinions on MSS
out on the web that this setting can throw you a curve. with this one its not an exact science. make sure all your hardware is correct and that you don't have some type of software interfering with your connection 70 and 69k is real bad see if the cable company can put a booster on the line
well I hope what I sent helped let me know
but I really think theirs somthing else causing your bad connection
Dan

Originally posted by id4rox:
Hey. I added MaxMSS with a value of 1460 to all the 000X (you said put it in the section with MaxMTU, i have like 5 ) in HKLM,System\CurrentControlSet\Services\Class\NetTrans\ and i noticed no increase or decrease. I have pretty poopy RR in upstate NY. My test file, before i added the keys in it was 70KB/sec, after was 69KB/sec. Did I do it right, do I add MaxMSS to al lthe 000X keys that have a MaxMTU setting in it? my maxmtu is 1500 and the maxmss is 1460, or do i just add it to one of them, or what?

help!

dannjr · Post by **dannjr** » Wed Jul 12, 2000 2:00 pm

HKLM,System\CurrentControlSet\Services\Class\NetTrans\000x and so on. as a string value called MaxMSS with a starting size of 1460
higher or lower depending on the system this has been tested on win98SE win98 win2000 by me on my connection and it seems to work well with the equipment I have

Originally posted by Philip:
All of these articles talk about MSS (Maximum Segment Size)... I know exactly whaat MSS is, as I said I've used it in previous patches, my question was:

What is the exact syntax of the entry in the Windows Registry according to MS ?

Ganja · Post by **Ganja** » Wed Jul 12, 2000 3:28 pm

I have just finished messing around with the various settings on my computer.
I am using WinME with cable modem.
I have found that changing my MaxMTU setting from 1500 to 1496 and then using the MaxMSS setting of 1460 produced the best results for downloading.

Nice to see a fellow floridian here Phillip, I'm in clearwater formerly from Manchester, England.

clover · Post by **clover** » Wed Jul 12, 2000 6:07 pm

Originally posted by id4rox:
Hey. I added MaxMSS with a value of 1460 to all the 000X (you said put it in the section with MaxMTU, i have like 5 ) in HKLM,System\CurrentControlSet\Services\Class\NetTrans\ and i noticed no increase or decrease. I have pretty poopy RR in upstate NY. My test file, before i added the keys in it was 70KB/sec, after was 69KB/sec. Did I do it right, do I add MaxMSS to al lthe 000X keys that have a MaxMTU setting in it? my maxmtu is 1500 and the maxmss is 1460, or do i just add it to one of them, or what?

help!

If you're also using a 56K modem, you should not add those settings to the 000x keys that your modem uses. Modems work better on 576 MaxMTU.

As for not improving your download from 70KB, it may be that you're capped at 70 in which case that is the most you can get out of your cable/dsl. I am capped at 50KB so don't complain :-) But before I added the MaxMSS, I was only getting 35-40 offpeak. Now I'm getting close to 50 at peak hour times.

clover

dannjr · Post by **dannjr** » Wed Jul 12, 2000 6:39 pm

NON and I do mean not one of these setting was ever intended for a dialup connection if your still looking for speed out of the dialup well UH ZZZZZZZZZZZZ
glad to see that it helped however so small hope it at least helped with the surf part too
thanks Dan

Originally posted by clover:
If you're also using a 56K modem, you should not add those settings to the 000x keys that your modem uses. Modems work better on 576 MaxMTU.

As for not improving your download from 70KB, it may be that you're capped at 70 in which case that is the most you can get out of your cable/dsl. I am capped at 50KB so don't complain :-) But before I added the MaxMSS, I was only getting 35-40 offpeak. Now I'm getting close to 50 at peak hour times.

clover

Barry weitz · Post by **Barry weitz** » Fri Jul 14, 2000 1:51 pm

Thanks worked great already had a good connection but got 20% more out of mindspring thanks speedguide and thanks dannjr

jliu · Post by **jliu** » Fri Jul 14, 2000 2:01 pm

So what exactly are you supposed to do...
my maxmtu is set @ 1500 and my maxmss is set @ 1460...

but i haven't noticed any speed difference..

clover · Post by **clover** » Fri Jul 14, 2000 7:42 pm

Maybe you were getting the max speed for your capp already?

clover

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mjsla · Post by **mjsla** » Sat Jul 15, 2000 12:33 am

I have been having my cable modem for 1 week now. Could you please explain to me how to change the setting on the MaxMTU and the string.

Thanks.

Originally posted by dannjr:
I'v been toying around with this for about two weeks. The cable modem tweeks and the PPPoE tweeks are Great, but you can get anywhere from 100kbps to 200kbps out of your connection if you add this setting in the same spot in your registry as the string value MaxMTU..
the new string for cable to start is string value.
MaxMSS and set it to 1460 to 1475
MSS stands for Maximum Segment Size
and this has increased my connection by 190kbps
I also have had the oprotunity to play with this on a PPPoE DSL Connection this one takes a little more playing around with
lower the MaxMTU to 1490 and put the
MaxMSS at about 1400 to start esp. if your on a mindspring connection you don't want to blow up IE Give it a try and if your not sure about the size just make it smaller than the values iv got here you should see a noticable improvment right away I know I have the only thing im not to sure of with this is that im still retunning the windows meadea player and realplayer...
The OS that this has been tested on is win98 and win98SE IE 5.01 IE 5 and IE 4.01 sp2
Let me know your findings Thanks
This info comes out of the windows big book and regedit.com
let me know on the board if this helped your connection

[This message has been edited by dannjr (edited 07-12-2000).]

dannjr · Post by **dannjr** » Sat Jul 15, 2000 12:55 am

My best advice to you is read everything you can in the speed guide it has already been laid out in the advanced tweaks and in the rest of speed guide. If your the faint of heart and don't no how to back up your registry yet then thats a good place to start other wise I just have to type everything over and its been done.
It would help if you told us what type of connection you have and the speed your getting now (kbps)
Good luck learning you should get allot from here also put in the downloadable tweaks that are here they make a big difference right away
well been a long day I'll get back to this today 1am

Originally posted by mjsla:
I have been having my cable modem for 1 week now. Could you please explain to me how to change the setting on the MaxMTU and the string.

Thanks.

dannjr · Post by **dannjr** » Sat Jul 15, 2000 1:26 am

I hope the email that I sent helped it is a little more involved to fine tune the setting
let me know if it helped or not.
and like Clover said you may have gotten to your cap already. But I alway's think there's room for improvment.
For though's of you getting results please post them including the setting you finnaly ended up with this could be a big help. Remember this one may not be an exact science
we may even have to go as far as who your ISP is.
Thanks

Originally posted by jliu:
So what exactly are you supposed to do...
my maxmtu is set @ 1500 and my maxmss is set @ 1460...

but i haven't noticed any speed difference..

jliu · Post by **jliu** » Sat Jul 15, 2000 2:04 am

well..I tried a few of those examples that you had in the email and didn't notice much differce....you could be right about me being @ my cap though....thx anyways..

Bouncer · Post by **Bouncer** » Sat Jul 15, 2000 2:12 am

Can I save this thread for the next time someone comes in an announces that according to some other site, MSS and MTU don't have any significance?

Back and forth, back and forth...yeesh.

Regards,
-Bouncer-

------------------
"Yeah Baby, YEAH!!!"

dannjr · Post by **dannjr** » Sat Jul 15, 2000 4:28 am

Hi I don't no
I have some of the same feelings. The point is has anyone been able to say it really dosn't work.
Ya its been going back and forth but maybe if we get a better handle on MSS if we can and finally get some truth out of Sun, Microsoft, and IBM, whom all three are useing it in some way for stability and speed in there networks
even NASA has a paper written on it for use on there Unix machines only they reverse the settings.
Here I got one: this is the RFC 879 taken right from off of Microsofts site in reference to win2k where they give a value for use of MSS with MTU and then point to the RFC number above and say that it can even be used in some cases to replace the DefaultRcvWindow string
Ya I had to go back and look that one up again. since we're basically talking Windows I'll stay out of SUN or IBM
Do we keep it or not. I say it works but all networks are not the same and that it should be put in a system where the person is willing to take the time to tune it to their individual networks because thats the only way it will work the default for MSS is 40 less than MaxMTU thats the starting point. the legal start limit according to Sun and Microsoft is a 576 MTU and a 536 MSS now we are all pressing the limit
here is the link to RFC 879
http://www.cis.ohio-state.edu/htbin/rfc/rfc879.html

mjsla · Post by **mjsla** » Sat Jul 15, 2000 2:10 pm

Motorola SURFboard cable modem
3com laptop pc nic
Toshiba Satellite 4090XDVD

MSN speed test:
657 Kbps
80.5 K bytes/sec....higest was around 100

Originally posted by dannjr:
My best advice to you is read everything you can in the speed guide it has already been laid out in the advanced tweaks and in the rest of speed guide. If your the faint of heart and don't no how to back up your registry yet then thats a good place to start other wise I just have to type everything over and its been done.
It would help if you told us what type of connection you have and the speed your getting now (kbps)
Good luck learning you should get allot from here also put in the downloadable tweaks that are here they make a big difference right away
well been a long day I'll get back to this today 1am

id4rox · Post by **id4rox** » Sat Jul 15, 2000 7:46 pm

Dan, the email was like kinda long and confusing, i didnt read 100% of it, probably like 75%.

I tried my mtu at 1496 and mss at 1460, no noticable difference. happypuppy.com I get good speeds like 300KB/sec, but its in long island, im in upstate ny, so its only like 150 miles away, so unless a site is 200 < miles away im stuck with poop speeds

I use RR in upstate NY (Binghamton area) and in our local newsgroups people have slow speeds too

dannjr · Post by **dannjr** » Mon Jul 17, 2000 1:03 pm

We have been running about 50/50 on this between the email and the post here. It seems that people with real good connections or real bad connetions "ARE NOT" getting any benifit from this setting so keep in mind that this won't work for everyone.

dannjr · Post by **dannjr** » Tue Jul 18, 2000 1:52 pm

MSS by all the rules according to whats in print from microsoft that you can get info on is that it should be set to 40 less than your MTU now this won't applie for a true Unix machine NASA has theres set MSS 1530 and MTU 1500 it all really depends on how good a connection you have to the server at your ISP I run a higher MSS because my ISP has a c%#$% connection to the backbone. so if you get a better result with it up go for it all networks are not the same at the start point example: my setting a month ago had been great MTU 1500 MSS 1476 this month because they changed the loop and added a whole mess of newbe's now my MYU 1492 MSS 1472 go figure this is probably why next week i'll be on my new DSL line with 1500 down and 400 up
good luck with it its been mixed
Dan

Originally posted by Opticflare:
Uhm, if MSS is MTU-28, then why are you people using 1460 as the MaxMSS for a MaxMTU of 1500? You're supposed to set them as MaxMTU=1500, and MaxMSS=1472 if you wanted to produce any kind of result.. (unless the max segment size you can ping to a website using something like ping -f -l 1472 www.yahoo.com isn't 1472, in which case you should add 28 to that number. For instance, if the max you were able to packet ping was 1460, you'd do 1460+28 which is 1488 and set that as your MTU...) Phillip, am I right on this?

-Derek

Bouncer · Post by **Bouncer** » Tue Jul 18, 2000 6:21 pm

Look, MSS is a function of the MTU. I would be very interested in reading ANY source on an ethernet network that has an MSS greater than the MTU.

The reasoning is this:

The Open Systems Interconnect (OSI) model provides 7 layers which govern how information flows between systems. By using this model to determine what has to happen at the various layers, rather than how it happens at each layer, it remains vendor non-specific. Which means a NIC card from 3Com, and One from Linksys can effectively communicate because BOTH adhere to certain protocols, what chipset each uses to do this is immaterial. As long as the NIC obeys the protocol requirements, the other device can understand the information sent.

There are seven layers, from top down, they are:
Application
Presentation
Session
Transport
Network
Data-Link
Physical

Information flows down from the layers above to the Transport layer, where the data is broken up into segments. In addition, 20 bytes of information allowing correct reassembly at the other side of the connection is added.

Below that, at the network layer, the segmented data is then encapsulated in a packet, and IP addressing and other info is added.

Then, the newly formed packet goes down to the Data-Link Layer, where it is embedded in a frame, with hardware (MAC) addressing, and some other info.

This FRAME, is what is actually sent out on the wire, in the form of bits. Ethernet specifications call for a 1500 byte frame. This maximum size of frame is called the MTU, or Maximum Transmission Unit. Since you must add both the MAC and IP addressing for WAN communication, the MSS (Maximum Segment Size - from the transport layer, remember?) must be small enough to allow both the IP and MAC addressing fields to be added.

Thus, the MSS must be less than the MTU.

Now, the MAC address is 48 bits in length. You need a source and destination hardware address, so 96 bits for that, or 12 bytes.

The IP addresses are 32 bits, and you need a source and destination address. So 64bits of IP addressing, or 8 bytes.

12 bytes (MAC) + 8 bytes (IP) = 20 bytes of information. The other 20 bytes are from the TCP stack, and were added when the segment was created. (see above).

20 bytes + 20 bytes = 40 Bytes of NON-DATA addressing and TCP info.

Now, if the MTU is 1500 bytes, then the MSS must be 1500 bytes - 40 bytes, or 1460 bytes.

Any packets larger than the MTU/MSS setting of your provider WILL RESULT IN PACKET FRAGMENTATION. If that occurs, the data is divided up into smaller packets which can traverse the link. Each of these new smaller packets ALSO HAS 40 BYTES of TCP/Addressing info added onto them, as each and every packet MUST have complete addressing info.

So, in summary, your "optimum" MTU/MSS settings depend on your ISP. The MTU can't be larger than your ISP allows, and MSS must be 40 bytes less. In addition, you must account for the LOWEST MTU of all the routers on the particular path through the Internet taken by the pr0n picture down-load you request, otherwise packet fragmentation will occur.

I hope that helps explain it, and didn't get too geeky.

Regards,
-Bouncer-

------------------
"Yeah Baby, YEAH!!!"

[This message has been edited by Bouncer (edited 07-19-2000).]

dannjr · Post by **dannjr** » Tue Jul 18, 2000 7:39 pm

Yea thats bouncer now maybe we will all get it. All I'm saying is try it

[This message has been edited by dannjr (edited 08-16-2000).]

Opticflare · Post by **Opticflare** » Wed Jul 19, 2000 12:28 am

Uhm, if MSS is MTU-28, then why are you people using 1460 as the MaxMSS for a MaxMTU of 1500? You're supposed to set them as MaxMTU=1500, and MaxMSS=1472 if you wanted to produce any kind of result.. (unless the max segment size you can ping to a website using something like ping -f -l 1472 www.yahoo.com isn't 1472, in which case you should add 28 to that number. For instance, if the max you were able to packet ping was 1460, you'd do 1460+28 which is 1488 and set that as your MTU...) Phillip, am I right on this?

-Derek

dannjr · Post by **dannjr** » Wed Aug 16, 2000 1:48 am

The entry to try in the registry is
HOTKEY-LOCAL-MACHINE/system/currentcontrolset/services/class/net trans/0000 threw 000+ (+ stands for the number) setting MaxMSS forces windows to start hi in the MTU if you graph it without setting this the packets open and close breaking up into smaller packets with MSS set to the higher amount 1460 or lower MTU won't tend to break down as much but it will lower as needed in win98 and SE MSS had a starting point of 536 and built as high as 1460 in win2k its already set to the max this is one of the reasons that there isn't as much to tweak in win2k I'm posting these results at http://microsyspro.com hit the link MaxMSS I'm also posting the link to the tool's I used with this on the site the software is free

dmxdog · Post by **dmxdog** » Thu Aug 17, 2000 9:53 pm

a quick question to all you smart asses

where is maxmss located in the registry and how do i change the settings?

thanks

-thedog

dannjr · Post by **dannjr** » Thu Aug 17, 2000 10:24 pm

Thanyou I know I am but what are ? don't worry be happy
Hi You have to add it just like you do with the MaxMTU
If you have added the tweaks from the Speed guide the MaxMTU has been added

Heres where it is supposed to be added or better yet tell me your OS and type of connection and maybe I'll email you the patch

heres where it goes

HOTKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Net Trans\0000 and so on
you will have key's 0000 threw 0010 more or less

within though's key's you will have various entry's Rt. click in there and add a new string value called
MaxMSS once thats made double click on that new value and set it to 1460 if your MTU is 1500 if your MTU is 1496 then set the value to 40 less if you have a PPPoE connection go to my web site and go to the bottem of the page click on the link MaxMSS and download the PPPoE patch for mindspring you can always edit it by right clicking on the download and resetting the values to your connection if your not sure write me back and I'll send you the patch for your connection
Good luck and remember to backup your registry
Note: the patch is compatible with win95 win98 win98SE win2000 will not need this patch because its preset from the start as far as I know
I will be making these patch's available on the site so far just the one for mindspring is set
Remember to put the other tweaks in including the system.ini setting for your network card this is important

ZenOps · Post by **ZenOps** » Fri Aug 18, 2000 1:14 am

I'd just like to add something about people using the tweak with a router like the Linksys.

The standard ethernet packet size is 1496, but many cable companies use a MTU of 1500. In order to not fragment incoming packets when they are redirected by the router, you should be using a MTU of 1496 (And I assume a MSS of 1460?) If you are using DSL, the suggested 1492 is is ok.

In other words, if you are using a NAT router like the Linksys, technically you should not use a MTU larger than 1496. You can test this theory by pinging other computers on your network with something like "ping 192.168.1.102 -f -l 1468"

WhiteTrashGOD · Post by **WhiteTrashGOD** » Fri Aug 18, 2000 2:06 am

Testing

------------------
-=WhiteTrashGOD=-

"I'll never get out of this world alive." - Hank Williams

"I'm leaving on a jetplane..." - John Denver

"...I swear I don't have a gun..." - Kurt Cobain

dannjr · Post by **dannjr** » Fri Aug 18, 2000 3:13 am

OK OK I Can't stand it anymore go to
http://www.microsyspro.com You can now download the tweaks for a nominal charge of FREE! One for a MTU of 1500 one for 1496 and for the strange PPPoE which with the MTU of 1492 and MSS of 1420 which seams to work well with the two PPPoE connections I have
Make sure you go to the LINK on the page that say's MaxMSS you can even veiw my D/L speed
Good Luck with these they seam to work for sum and not others and as iv said in the past always backup your registry.
Oh I also included a patch for when you use the old 56k dialup so that you can fall back betweeeeeen the two.......

Storm90 · Post by **Storm90** » Fri Aug 18, 2000 6:51 pm

Thank you for the tip it work great.My pings
were any where between 300 to 400 after reajusting to your settings on all three computers. The pings drop to 30 to 40 on each
computer and the speed increased.I was just about to call the cable company and have them check my lines.You save me the call.
Thanks again!

Juggernaut · Post by **Juggernaut** » Fri Aug 18, 2000 10:13 pm

I tried it and it didn't affect my download speeds any but it made my ping in playing online games even bigger. So I went back to my original config. Any ideas on how to get my ping lower?

dannjr · Post by **dannjr** » Fri Aug 18, 2000 10:44 pm

What OS do you have? and do you have the memory buffer set in the system.ini per the speed guide? have you been at your max to start with? In some cases it will not work go to my site email me with the particulars including who your ISP is the other thing is that I had someone try all the files till one of them worked. In some cases MSS with the proper MTU could slow it down and you have to lower the MTU and MSS to get better results this is also why I have the different files at the web site. get me the info maybe we can still get it but it may take some time I'm getting allot of good email on this and a little bad and I don't like the bad so I don't mind working on this if you don't. Unless your happy with your connection
Let me know
Dan

Originally posted by Juggernaut:
I tried it and it didn't affect my download speeds any but it made my ping in playing online games even bigger. So I went back to my original config. Any ideas on how to get my ping lower?

CoolJ · Post by **CoolJ** » Sat Aug 19, 2000 6:27 am

I cant seem to find my MaxMss, can someone please tell me where it is?

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Storm90 · Post by **Storm90** » Sat Aug 19, 2000 10:11 am

Coolj
Make a new string value for it in the reg.
Next to your MTU Value.