SG Broadband Community

DSL
SBC Global/Up to 1.5 Mbps
Win XP


TCP options string = 020405ac01010402
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) = 17424
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 17424

RWIN is a multiple of MSS
Other RWIN values 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: 696.96 kbps (87.12 KBytes/s) @ 200ms
Your TCP Window limits you to: 278.784 kbps (34.848 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.
MTU Discovery (RFC1191) = ON
Time to live left = 116 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)


Thank you in advance for your suggestions.

Welcome to Speedguide zodiac , download the TCP Optimizer and try the following settings.

General Settings tab:

Custom settings - check
Modify All Network Adapters - check
network adapter selection - your NIC
MTU - 1492
TTL - 64
TCP Receive Window - 63888
MTU Discovery - Yes
Black Hole Detect - No
Selective Acks - Yes
Max Duplicate ACKs - 3
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 - 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 to remove any spyware then install and update SpywareBlaster 3.5.1 to stay spyware FREE.

7. Make sure you do the faster web page tweak in our Help & Tips page.

8. 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.

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

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