Slow DSL connection

[Thomas]

My Verizon DSL connection was logging 70 kbits per second where I saw several others at 700! Your TCP/IP Analyzer reported my system at 1362 MTU. I ran your TCP/IP Enhancer and it was then 1462. The speed test jumped from 70 kbits to 400 kbits, a good improvement by still not the 700 kbits I am seeing on other computers. Any suggestions to increase my connection speed are appreciated.

[EvilAjax]

Welcome to Speedguide.

First off, what operating system are you running?

What PPPoE software are you using? (if indeed PPPoE/this means you have to type a username and password before logging to the internet)

Are you connected by router?

You have to set your MTU to 1492 if you are connected by PPPoE for maximum throughput.

The next thing you are to tweak is your DefaultRcvWindow (RWIN) value. I have the same connection as you. These are my current settings under Windows XP, using RASPPPoE. IMO the best PPPoE software out there, and it's free!

Do you know how far you live from your ISP?

If you're stuck, click the "New to tweaking" link located in my signature. Post with feedback :)

[EvilAjax]

MTU = 1492
MTU is optimized for PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.
MSS = 1452
MSS is optimized for PPPoE DSL broadband. If not, consider raising MTU to 1500 for maximum throughput.

Default Receive Window (RWIN) = 31944
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 31944

RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
511104 (MSS x 44 * scale factor of 8)
255552 (MSS x 44 * scale factor of 4)
127776 (MSS x 44 * scale factor of 2)
63888 (MSS x 44)
bandwidth * delay product:

Your RcvWindow limits you to: 1277.76 kbps (159.72 KBytes/s) @ 200ms
Your RcvWindow limits you to: 511.104 kbps (63.888 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 49 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 01011100

Precedence (priority) = 100 (flash override)
Delay = 1 (low delay)
Throughput = 1 (high throughput)
Reliability = 0 (normal reliability)
Cost = 1 (low cost)