Could use some help with TCP Optimizer settings

[Sushi_x47]

Hey there, I have gone through most of the setting tweaks mentioned in previous threads (register changes, etc), and I'm looking to try and improve my connectivity with TCP Optimizer or Cablenut. I tried "Optimal Settings" with TCP Optimizer once, but it seemed to have reduced my speed slightly instead, from a speedtest. My info :

I''m on an ADSL2+ (PPPoA) connection, ISP is Optus (Australia) advertised speed of 20000/1024. Im running an XP SP2 as my OS.

TCP/IP Analyzer Test
TCP options string = 020405b401010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.

Default TCP Receive Window (RWIN) = 65535
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 65535

Note: TCP 1323 Options need to be enabled for RWIN over 2^16 (65535). Windows 9x might also need the MS Vtcp386 fix.
For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

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

Your TCP Window limits you to: 2621.4 kbps (327.675 KBytes/s) @ 200ms
Your TCP Window limits you to: 1048.56 kbps (131.07 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 120 hops
TTL value is ok.

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

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

Regards

[YeOldeStonecat]

When you tried optimal...what did it set your RWIN to? I might try both 256960 and 513920 and see which yields better results.

20/1 megs? Wow...lucky!

[mnosteele52]

Hi Sushi_x47, try the following settings:

General Settings tab:

Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1500
TTL - 64
TCP Receive Window - 256960
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 3
TCP 1323 Options:
Windows Scaling - check
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 - 92
MaxNegativeCacheTtl - 0
NetFailureCacheTime - 0
NegativeSOACache Time - 0
LAN Request Buffer Size - 32768

Then select "Apply Changes" and reboot to take effect.

VERY IMPORTANT TO DO THE FOLLOWING:

1. Under your LAN connection - properties - general tab, uninstall all the protocols there that you do not need. For a stand alone pc all you need is Internet Protocol TCP/IP.

2. Open IE and select tools - internet options - connections - LAN settings, make sure NOTHING there is checked.

3. ALWAYS connect your modem via ethernet (NIC) and make sure you have the latest drivers for your NIC from the manufacturer and set your duplex mode to "auto". If you are using a router make sure you have the latest firmware.

4. Clean out your temporary internet files with CrapCleaner.

5. Power cycle your modem i.e. unplug it for at least 15 seconds.

6. Download, update and scan with SpyBot S&D 1.4, Ad-Aware SE 1.06, ewido anti-spyware 4.0 & SUPERAntiSpyware to remove any spyware then install and update SpywareBlaster 3.5.1 to stay spyware FREE.

7. If you aren't currently using a firewall then I suggest you install Kerio Personal Firewall 2.1.5, it's FREE and uses next to no resources.

8. Do a FREE online virus scan from BitDefender Online Scan and remove all that it finds.

9. Make sure you have ALL of the latest Windows Updates.

10. Just an FYI, if you are using Zone Alarm for a firewall it can noticeably drop your speeds.

[Sushi_x47]

Thanks for the replies and suggestions guys, I will definately get around to testing it out, at work atm so will post again later in the day once I get home. Cheers

Regards

[segiterrus]

.

[ScorpioN86]

Hi guys, anyone know the best settings for a 100/10 connection? i'm on win 7 x64 and optimizer 3.0.6

[charuwaka]

I have vodafone 3.6mbps modem I want get fast internet so kindly suugest best tcp\ip settings for tcp optimizer and also registery tweaks

current iam getting 218kbps which is equal to 218/8=27.5kbps my connection is=Edge os:windows 7 x64

these are my modem

TCP options string = 020405b40103030201010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.
Default TCP Receive Window (RWIN) = 17520
RWIN Scaling (RFC1323) = 2 bits (scale factor: 2^2=4)
RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
64240 (up to 2 Mbit lines, depending on latency. MSS * 44)
128480 (1-5 Mbit lines, depending on latency. MSS * 44 * 2)
256960 (2-14 Mbit lines, depending on latency. MSS * 44 * 2^2)
513920 (8-30 Mbit lines, depending on latency. MSS * 44 * 2^3)
1027840 (25-60 Mbit lines depending on latency. MSS * 44 * 2^4)
bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 701 kbps (88 KBytes/s) @ 200ms
Your TCP Window limits you to: 280 kbps (35 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.
MTU Discovery (RFC1191) = ON
Time to live left = 117 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)
Unscaled TCP Receive Window = 4380

kindly reply with best tcp settings thanks in advance