"Optimize"- need help please

[Topus]

My friend's dsl speed is unstable and slow. he can't write english ( in fact my english is poor too ), so i stead of him for asking help.

Here is his information:
ISP Speed-2000/256 (PPPoE)
OS- XP (sp2)
............................................................


SpeedGuide.net TCP/IP Analyzer


TCP properties for IP = 61.59.xxx.xxx ()
Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Notes: Read the Analyzer FAQ if the above is not your IP address.

TCP options string = 020405a00103030201010402

MTU = 1480
MTU is optimized for Windows XP PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.

MSS = 1440
MSS is optimized for Windows XP PPPoE DSL broadband. If not, consider raising your MTU value.

Default TCP Receive Window (RWIN) = 260640
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP Receive Window = 65160

RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
506880 (MSS x 44 * scale factor of 8)
253440 (MSS x 44 * scale factor of 4)
126720 (MSS x 44 * scale factor of 2)
63360 (MSS x 44)

bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 10425.6 kbps (1303.2 KBytes/s) @ 200ms
Your TCP Window limits you to: 4170.24 kbps (521.28 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 54 hops
TTL value is ok.

Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000 (0)
.........................................................................

improved nothing-speed still up to 60% only

.........................................................................

Please help me how to setting?

Thanks

[trogers]

Use the following custom setting with TCP Optimizer:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1480
TTL - 64
TCP Receive Window - 63360
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - uncheck
Timestamps - uncheck
Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 20
LocalPriority - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
Lan Browsing speedup - optimized
QoS: NonBestEffortLimit - 0
ToS: DisableUserTOSSetting - 0
ToS: DefaultTOSValue - 80
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot to take effect

[Topus]

Thanks
.............................................................
SpeedGuide.net TCP/IP Analyzer


TCP properties for IP = 59.104.xxx.xxx ()
Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Notes: Read the Analyzer FAQ if the above is not your IP address.

TCP options string = 020405a001010402

MTU = 1480
MTU is optimized for Windows XP PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.

MSS = 1440
MSS is optimized for Windows XP PPPoE DSL broadband. If not, consider raising your MTU value.

Default TCP Receive Window (RWIN) = 63360
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 63360

RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
506880 (MSS x 44 * scale factor of 8)
253440 (MSS x 44 * scale factor of 4)
126720 (MSS x 44 * scale factor of 2)
63360 (MSS x 44) <-- current value

bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 2534.4 kbps (316.8 KBytes/s) @ 200ms
Your TCP Window limits you to: 1013.76 kbps (126.72 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 54 hops
TTL value is ok.

Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000 (0)
.................................................
I'm sorry have to tell you that improved nothing
.......................................................
Perhaps another setting will do, mind help me again

Thanks

[trogers]

Do a tracert to www.yahoo.com

To do a tracert, click 'Start' and then 'Run'. Type "cmd" into the box and click 'ok'.

A DOS black screen will appear. Type after the C:\

tracert www.yahoo.com

and press enter key

When test is completed, move mouse cusor to the DOS black screen, click right and choose 'select all'.

Move mouse cursor to the Quick Reply box of this forum, click right and 'paste'.

[Topus]

Microsoft Windows XP [版本 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\H C YU>tracert www.yahoo.com

Tracing route to www.yahoo-ht2.akadns.net [209.131.36.158]
over a maximum of 30 hops:

1 43 ms 41 ms 41 ms 203-73-6-1.adsl.dynamic.seed.net.tw [203.73.6.1]

2 42 ms 42 ms 40 ms sj235-130.dialup.seed.net.tw [139.175.235.130]
3 43 ms 42 ms 42 ms R56-190.seed.net.tw [139.175.56.190]
4 43 ms 42 ms 42 ms R56-138.seed.net.tw [139.175.56.138]
5 227 ms 227 ms 229 ms R58-18.seed.net.tw [139.175.58.18]
6 226 ms 228 ms 227 ms pa_c124_1_ge12.twgate.net [203.160.225.217]
7 229 ms 228 ms 227 ms 203.160.225.54
8 228 ms 228 ms 238 ms g-0-0-0-p150.msr2.sp1.yahoo.com [216.115.107.73]

9 228 ms 227 ms 227 ms UNKNOWN-209-131-32-23.yahoo.com [209.131.32.23]

10 228 ms 228 ms 228 ms f1.www.vip.sp1.yahoo.com [209.131.36.158]

Trace complete.

C:\Documents and Settings\H C YU>

[trogers]

Microsoft Windows XP [版本 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\H C YU>tracert www.yahoo.com

Tracing route to www.yahoo-ht2.akadns.net [209.131.36.158]
over a maximum of 30 hops:

1 43 ms 41 ms 41 ms 203-73-xxx-xxx.adsl.dynamic.seed.net.tw [203.73.xxx.xxx]

Your first hop shows your comp is rather far from the central switch station and this is limiting your speed.

You can try the following and see if your speed can be better:

General Settings tab:
Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1480
TTL - 64
TCP Receive Window - 126720
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 2
TCP 1323 Options:
Windows Scaling - checked
Timestamps - uncheck
Advanced Settings tab:
Max Connections per Server - 10
Max Connections per 1.0 Server - 20
LocalPriority - 5
Host Priority - 6
DNSPriority - 7
NetbtPriority - 8
Lan Browsing speedup - optimized
QoS: NonBestEffortLimit - 0
ToS: DisableUserTOSSetting - 0
ToS: DefaultTOSValue - 80
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot to take effect

[Topus]

very grateful for your help!
The speed is faster about 18% than before. but there is a tiny problem-still unstable,anyway it won't bother at all.-Satisfy
Thanks agan