can anyone help me to set my tcp optimizer.

sj_van · Post by **sj_van** » Fri May 18, 2007 10:03 am

Can anyone teach me how to set my tcp optimizer . Im using 512k connection.

trogers · Post by **trogers** » Fri May 18, 2007 10:13 am

Which country are you in?

Post your TCP Analyzer report.

sj_van · Post by **sj_van** » Fri May 18, 2007 11:19 am

im in Malaysia .

TCP options string: 020405a00103030001010402
MSS: 1440
MTU: 1480
TCP Window: 34560 (multiple of MSS)
RWIN Scaling: 0
Unscaled RWIN : 34560
Reccomended RWINs: 63360, 126720, 253440, 506880
BDP limit (200ms): 1382kbps (173KBytes/s)
BDP limit (500ms): 553kbps (69KBytes/s)
MTU Discovery: ON
TTL: 47
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

this my analyze report.

sj_van · Post by **sj_van** » Fri May 18, 2007 11:27 am

im using alcatel thompson 511e home plus adsl modem. The name of my ISP is TMnet Streamyx.

trogers · Post by **trogers** » Fri May 18, 2007 11:33 am

sj_van wrote:im using alcatel thompson 511e home plus adsl modem. The name of my ISP is TMnet Streamyx.

Use the following 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 - 31680
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 - 1
Host Priority - 1
DNSPriority - 1
NetbtPriority - 1
Lan Browsing speedup - optimized
QoS: NonBestEffortLimit - 0
ToS: DisableUserTOSSetting - 0
ToS: DefaultTOSValue - 136
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768
Then select "Apply Changes" and reboot to take effect

After reboot, test your speed at this link using the test servers in Malaysia:

http://www.speedtest.net/

sj_van · Post by **sj_van** » Fri May 18, 2007 2:45 pm

Thx for ur reply man .....thx u very much

.

anyway this was my new analyzer ,is this ok.

TCP options string: 020405a001010402
MSS: 1440
MTU: 1480
TCP Window: 33120 (multiple of MSS)
RWIN Scaling: 0
Unscaled RWIN : 33120
Reccomended RWINs: 63360, 126720, 253440, 506880
BDP limit (200ms): 1325kbps (166KBytes/s)
BDP limit (500ms): 530kbps (66KBytes/s)
MTU Discovery: ON
TTL: 47
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

trogers · Post by **trogers** » Fri May 18, 2007 10:57 pm

sj_van wrote:Thx for ur reply man .....thx u very much .

anyway this was my new analyzer ,is this ok.

TCP options string: 020405a001010402
MSS: 1440
MTU: 1480
TCP Window: 33120 (multiple of MSS)
RWIN Scaling: 0
Unscaled RWIN : 33120
Reccomended RWINs: 63360, 126720, 253440, 506880
BDP limit (200ms): 1325kbps (166KBytes/s)
BDP limit (500ms): 530kbps (66KBytes/s)
MTU Discovery: ON
TTL: 47
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

Nope. Run my settings again and make sure TCP Window is set to 31680. Your present TCP Window is set to 33120, and not 31680.

sj_van · Post by **sj_van** » Fri May 18, 2007 11:43 pm

TCP options string: 020405a001010402
MSS: 1440
MTU: 1480
TCP Window: 31680 (multiple of MSS)
RWIN Scaling: 0
Unscaled RWIN : 31680
Reccomended RWINs: 63360, 126720, 253440, 506880
BDP limit (200ms): 1267kbps (158KBytes/s)
BDP limit (500ms): 507kbps (63KBytes/s)
MTU Discovery: ON
TTL: 45
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

is this ok bro. thx u very much for helping me .

trogers · Post by **trogers** » Fri May 18, 2007 11:49 pm

sj_van wrote:TCP options string: 020405a001010402
MSS: 1440
MTU: 1480
TCP Window: 31680 (multiple of MSS)
RWIN Scaling: 0
Unscaled RWIN : 31680
Reccomended RWINs: 63360, 126720, 253440, 506880
BDP limit (200ms): 1267kbps (158KBytes/s)
BDP limit (500ms): 507kbps (63KBytes/s)
MTU Discovery: ON
TTL: 45
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

is this ok bro. thx u very much for helping me .

Yes, your settings are correct for 512 kbps line. If you upgrade your speed package with StreamyX to 1024 kbps, use the same settings but change TCP Window to 63360 (= 31680 x 2).

sj_van · Post by **sj_van** » Fri May 18, 2007 11:57 pm

Thank you very much

.....i need to know one thing can my friend use the same setting that u gave me .My friend also using 512k connection ..

trogers · Post by **trogers** » Sat May 19, 2007 12:04 am

sj_van wrote:Thank you very much .....i need to know one thing can my friend use the same setting that u gave me .My friend also using 512k connection ..

He can use the same settings but may have to change MTU and TCP Window values according to his actual MTU as shown by TCP Analyzer.

MTU can be different in PPPoE connections. Usual values are 1492 or 1480. But sometimes, routers can limit MTU to some other values like 1472, 1458 or 1454.

So MTU should be set to what the TCP Analyzer shows.

TCP Window should be set to MSS x 22 for 512 kbps line when we are in South East Asia.

MSS = MTU - 40.

sj_van · Post by **sj_van** » Sat May 19, 2007 1:29 am

ok thx alot bro..

sj_van · Post by **sj_van** » Sat May 19, 2007 10:46 am

I still have a problem in streaming online video and have problem in opening the web page. My download speed is ok .