Please help w/DSL Broadband

[BigPrez]

Please help . . . I am operating XP - DSL 768Kbps Down/384Kbps Up
No Spyware - Ran SpyBot & AdAware and using Kerio Personal Firewall. Dumped all temp files. Thank you in advance of your replies :thumb:

SpeedGuide.net TCP/IP Analyzer

Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)
Notes: Read the Analyzer FAQ if the above is not your IP address.253+9

TCP options string = 020405ac0103030101010402
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 your MTU value.

Default TCP Receive Window (RWIN) = 98304
RWIN Scaling (RFC1323) = 1 bits (scale factor of 2)
Unscaled TCP Receive Window = 49152

For optimum performance, consider changing RWIN to 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 (Note this is not a speed test):

Your TCP Window limits you to: 3932.16 kbps (491.52 KBytes/s) @ 200ms
Your TCP Window limits you to: 1572.864 kbps (196.608 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 51 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)

CableNut Custom Settings File
WIN XP
98304
49152
1
100
240
320
81920
64000
15040
0
1280
32
4096
1
1
0
blank
8000
16384
5000000
1
1
1
1
3
100
80
1452
1452
30
0
blank
20
10
64
0
6
92

[trogers]

For Cablenut setting, use the following values:

CableNut Custom Settings File
WIN XP
31944
15972
1
100
240
640
819200
64000
150400
0
12800
32
4096
1
1
0
15972
8000
16384
5000000
1
1
0
1
2
100
80
1452
1452
30
0
15972
20
10
64
0
6
240

[BigPrez]

:) Thank you trogers. Will try and report back:thumb:

[trogers]

You can also make these 3 changes to my ccs file setting to see if they give you better speed:

DefaultSendWindow - 31944
GlobalMaxTcpWindowSize - 31944
TcpWindowSize - 31944

[BigPrez]

Update

I went to my DSL providers website and this general statement was made:

(Internet providers name) is extremely fast - up to 3Mbps Downstream / 768Kbps Upstream.

Would this change any settings?

[trogers]

Yes, definitely. RWIN settings affect your comp's throughput limit. Setting it too small is like limiting the size of your doorway.

Cablenut settings for 3 Mbps down speed with MTU 1492 need modifications to the following:

DefaultReceiveWindow - 127776
DefaultSendWindow - 63888
GlobalMaxTcpWindowSize - 63888
MaxHashTableSize - 32768
Tcp13230pts - 1
TcpWindowSize - 63888

[BigPrez]

Update

I email my Internet provider and asked about my modem DSL speed. This was part of their reply:

"Your modem is currently trained at 1024 kbps down. The speed you see on a speedtest may differ slightly. Your modem's upload speed is currently at 768 kbps."

Thank you again for all your help. I will post my results after all the tweaking (hopefully) is finished. :thumb:

[trogers]

For 1024 Kbps down, make the following adjustments in your ccs file:

DefaultReceiveWindow - 63888
DefaultSendWindow - 63888
GlobalMaxTcpWindowSize - 63888
MaxHashTableSize - 32768
Tcp13230pts - 0
TcpWindowSize - 63888