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Galeno
08-01-02, 12:37 AM
Hi all:

System:
Windows XP Professional
CPU: Athlon XP 1900
RAM: 512 DDR
INTERNET: GTD Internet (2000/256)
ROUTER: D-LINK 704P

Well, I have a very variable download speed and I don't know if I getting the best of my connection. I would appreciate any help.

This is my result of the test:

------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
Maximum useful data in each packet = 1452, which equals MSS.
MSS is optimized for PPPoE DSL broadband. If not, consider raising MTU to 1500 for maximum throughput.

Default Receive Window (RWIN) = 2904
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 2904
RWIN is a multiple of MSS
Other values for RWIN 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:
Your RcvWindow limits you to: 116.16 kbps (14.52 KBytes/s) @ 200ms
Your RcvWindow limits you to: 46.464 kbps (5.808 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.

MTU Discovery (RFC1191) = ON

Time to live left = 47 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00101000
Precedence (priority) = 001 (priority)
Delay = 0 (normal delay)
Throughput = 1 (high throughput)
Reliability = 0 (normal reliability)
Cost = 0 (normal cost)


Thank you very much


Galeno


:D :D :D

mnosteele52
08-01-02, 12:47 AM
Welcome to Speedguide:D, it looks like you may already have Cablenut, if not download it here (http://www.student.ipfw.edu/~gottjl01/files/cablenut408.exe) and try the following settings:

DefaultReceiveWindow = 256000
DefaultSendWindow = 32768
DisableAddressSharing = 1
InitialLargeBufferCount = 100
InitialMediumBufferCount = 240
InitialSmallBufferCount = 320
LargeBufferSize = 81920
MaxFastTransmit = 64000
MediumBufferSize = 15040
PriorityBoost = 0
SmallBufferSize = 1280
TransmitWorker = 32
FastSendDatagramThreshold = 4096
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitsOnReceive = 0
GlobalMaxTcpWindowSize = 36300 or 49368 or 63888
MaxFreeTcbs = 8000
MaxHashTableSize = 16384
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 0
TcpLogLevel = 1
TcpMaxDupAcks = 2
TcpMaxHalfOpen = 100
TcpMaxHalfRetried = 80
TcpRecvSegmentSize = 1452
TcpSendSegmentSize = 1452
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 36300 or 49368 or 63888
MaxConnectionsPer1_0Server = 40
MaxConnectionsPerServer = 20
DefaultTTL = 64
DisableUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = 44

Also make the following a reg file and merge into your registry:

************begin copy and paste***********
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AFD\Parameters]
"BufferMultiplier"=dword:00000400

************end copy and paste***********

Hope this helps, let me know.:) :D