daveb
03-13-08, 05:32 PM
Hi All,
I wanted to share some TCP Optimizer and Cablenut settings that are really working well for me.
I have Win XP Home and connect through a Linksys wireless hub and my ISP provided me with a Broadmax DSL modem connection.
Since I have a PPPoE 1500kbps connection I use an MTU of 1492.
First, I ran a Latency test directly to my ISP (set at 1500MTU) through TCP Optimizer.
My latency turned out to be 124. (Yours may differ)
Next, I went to the BDP tab on TCP Optimizer and entered the data of my 1492 MTU and 124ms Latency to find the closest RWIN that fit.
Next, I got on my calculator and divided the above RWIN by 1452 MSS (for my 1492 MTU).
I then took the closest round number (less fractions) and multiplied that round number by 1452. In my case that round number turned out to be 128.
I then multiplied 1452 x 128 to get an RWIN divisable by 1452.
This number now became my RWIN.
I went to http://www.j79zlr.com/cablenutXP2k.php and plugged in the numbers that I had obtained to get the best Cablenut settings.
I used all those settings except for the RWIN.
(Exception: I used 184 instead of the 240 Recommended DefaultTOSvalue) I got the 184 number from this site http://www.speedguide.net/faq_in_q.php?category=100&qid=230
The RWIN I plugged in from my calculations from TCP Optimizer BDP and following rounding calculations.
I had tried the RWIN suggested by the http://www.j79zlr.com/cablenutXP2k.php site before and they didn't seem to work well, so I went with the calculations made from TCP Optimizer.
In doing all this, I have managed to come up with a winning combination for my situation. Your situation may differ, but I like using the RWIN rounded to nearest MSS divisable per the TCP Optimizer then using the Recommended Cablenut recommendations for the remainder of the Cablenut numbers.
I've been spending a lot of time finding the best numbers and I do believe if you were to use the above methods of combining the two excellent programs that you too might find a winning combination.
It's worth a try at any rate. No guarantees and you mess with your registry at your own risk but it all makes sense and I just got download speeds that amazed me. I used relative download times from http://www.speedtest.net/
I realize that this may not be an accurate site to use, but I took into consideration the RELATIVE readings that I was getting and have seen improved relative speeds via other DSL Speed Test sights (including Speedguide tests).
I'll be the first to admit that speeds vary greatly throughout the day.
My best speed of 1557kbps was recorded at around 2:00 PM in the afternoon on a weekday with an advertised linespeed of 1500. I used the nearest city's location via http://www.speedtest.net/ to get this speed. Previously I was getting speeds around 1200kbps speeds under similar conditions.
Once again, there are a lot of variables, I don't think this is a fluke, I just seemed to hit on a winning combination for me. You can bet that I saved my Cablenut settings for this reading. I only hope you have great luck in finding the best combination, give this a try, I really hope it works as well for you as it has for me.
WORKS FOR ME ... ;-)
Good Luck,
Dave B
I wanted to share some TCP Optimizer and Cablenut settings that are really working well for me.
I have Win XP Home and connect through a Linksys wireless hub and my ISP provided me with a Broadmax DSL modem connection.
Since I have a PPPoE 1500kbps connection I use an MTU of 1492.
First, I ran a Latency test directly to my ISP (set at 1500MTU) through TCP Optimizer.
My latency turned out to be 124. (Yours may differ)
Next, I went to the BDP tab on TCP Optimizer and entered the data of my 1492 MTU and 124ms Latency to find the closest RWIN that fit.
Next, I got on my calculator and divided the above RWIN by 1452 MSS (for my 1492 MTU).
I then took the closest round number (less fractions) and multiplied that round number by 1452. In my case that round number turned out to be 128.
I then multiplied 1452 x 128 to get an RWIN divisable by 1452.
This number now became my RWIN.
I went to http://www.j79zlr.com/cablenutXP2k.php and plugged in the numbers that I had obtained to get the best Cablenut settings.
I used all those settings except for the RWIN.
(Exception: I used 184 instead of the 240 Recommended DefaultTOSvalue) I got the 184 number from this site http://www.speedguide.net/faq_in_q.php?category=100&qid=230
The RWIN I plugged in from my calculations from TCP Optimizer BDP and following rounding calculations.
I had tried the RWIN suggested by the http://www.j79zlr.com/cablenutXP2k.php site before and they didn't seem to work well, so I went with the calculations made from TCP Optimizer.
In doing all this, I have managed to come up with a winning combination for my situation. Your situation may differ, but I like using the RWIN rounded to nearest MSS divisable per the TCP Optimizer then using the Recommended Cablenut recommendations for the remainder of the Cablenut numbers.
I've been spending a lot of time finding the best numbers and I do believe if you were to use the above methods of combining the two excellent programs that you too might find a winning combination.
It's worth a try at any rate. No guarantees and you mess with your registry at your own risk but it all makes sense and I just got download speeds that amazed me. I used relative download times from http://www.speedtest.net/
I realize that this may not be an accurate site to use, but I took into consideration the RELATIVE readings that I was getting and have seen improved relative speeds via other DSL Speed Test sights (including Speedguide tests).
I'll be the first to admit that speeds vary greatly throughout the day.
My best speed of 1557kbps was recorded at around 2:00 PM in the afternoon on a weekday with an advertised linespeed of 1500. I used the nearest city's location via http://www.speedtest.net/ to get this speed. Previously I was getting speeds around 1200kbps speeds under similar conditions.
Once again, there are a lot of variables, I don't think this is a fluke, I just seemed to hit on a winning combination for me. You can bet that I saved my Cablenut settings for this reading. I only hope you have great luck in finding the best combination, give this a try, I really hope it works as well for you as it has for me.
WORKS FOR ME ... ;-)
Good Luck,
Dave B