Recommended TCP Settings for my set-up?

MakaveLLi · Post by **MakaveLLi** » Tue Sep 02, 2008 5:09 am

-ISP: AT&T Yahoo! (1536 Kbps down/384 Kbps up)
-Modem: Motorola Speedstream 4100
-OS: Win XP Home (SP3 - fully updated)
-Virus/Spyware free

Can someone please recommend tweaks/settings for my current set-up. Below is my test result. Thanks.
---------------------------------------------

« SpeedGuide.net TCP Analyzer Results »
Tested on: 09.02.2008 04:53
IP address: 71.137.xxx.xx

TCP options string: 020405ac0103030401010402
MSS: 1452
MTU: 1492
TCP Window: 937488 (NOT multiple of MSS)
RWIN Scaling: 4
Unscaled RWIN : 58593
Reccomended RWINs: 63888, 127776, 255552, 511104
BDP limit (200ms): 37500kbps (4687KBytes/s)
BDP limit (500ms): 15000kbps (1875KBytes/s)
MTU Discovery: ON
TTL: 111
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

mccoffee · Post by **mccoffee** » Tue Sep 02, 2008 11:22 am

YOur rwin is way way to high try thease in the optimizer

Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU 1492
TTL - 64
TCP Receive Window - 127776
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 - 1
Host Priority - 1
DNSPriority - 1
NetbtPriority - 1
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

MakaveLLi · Post by **MakaveLLi** » Tue Sep 02, 2008 2:52 pm

Thanks for your help mccoffee! Would a program like IE7Pro change the settings made bu TCPOptimizer?

Here are my latest test results (after applying your recommended tweaks). Is my internet set-up FULLY optimized now?

« SpeedGuide.net TCP Analyzer Results »
Tested on: 09.02.2008 14:47
IP address: 71.147.x.xx

TCP options string: 020405ac0103030101010402
MSS: 1452
MTU: 1492
TCP Window: 127776 (multiple of MSS)
RWIN Scaling: 1
Unscaled RWIN : 63888
Reccomended RWINs: 63888, 127776, 255552, 511104
BDP limit (200ms): 5111kbps (639KBytes/s)
BDP limit (500ms): 2044kbps (256KBytes/s)
MTU Discovery: ON
TTL: 47
Timestamps: OFF
SACKs: ON
IP ToS: 01000000 (64)
Precedence: 010 (immediate)
Delay: 0 (normal delay)
Throughput: 0 (normal throughput)
Reliability: 0 (normal reliability)
Cost: 0 (normal cost)
Check bit: 0 (correct)
DiffServ: CS2 010000 (16) - class 2 (RFC 2474). Similar forwarding behavior to the ToS Precedence field.

mccoffee · Post by **mccoffee** » Tue Sep 02, 2008 3:31 pm

nope ie wouldn't change any of those settings

MakaveLLi · Post by **MakaveLLi** » Wed Sep 03, 2008 12:24 am

Wow! I can definitely feel a difference after applying these tweaks. IE7 is blazing fast now! THANK YOU!!!

Quick question....my speedtest.net download results are around 1320 kb/s. That's 88% of the ATT Yahoo advertised down speed (1500). Is this within range or should I be getting HIGHER kb/s than 1320?

Is there another tweak to improve this or is this pretty much the max I can pull?

Thanks.

mccoffee · Post by **mccoffee** » Thu Sep 04, 2008 4:49 pm

your speeds are well within range for dsl with dsl you are only suppose too get 80-85percent due to overhead in security ,and distance from the central office.

Personally i say me happy with it ,but if you are still lagging if you phone lines are older maybe look into getting them rewired that may help. Also keep the modem away from halogen lighting ,electrical equipment see if they pick up.

One more thing see if there is any firmware upgrades for your modem which may hekp with the speeds.