CableNut Numbers??

Get help and discuss anything related to tweaking your internet connection, as well as the different tools and registry patches on the site. TCP Optimizer settings and Analyzer results should be posted here.
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WolfgangPC
Regular Member
Posts: 221
Joined: Sun Oct 06, 2002 1:18 pm
Location: Canada

CableNut Numbers??

Post by WolfgangPC »

Hey could I get some numbers for CableNut...Here are my results..Thanks

TCP options string = 020405ac0103030301010402
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 MTU to 1500 for maximum throughput.

Default Receive Window (RWIN) = 512000
RWIN Scaling (RFC1323) = 3 bits (scale factor of 6)
Unscaled Receive Window = 64000

For optimum performance, consider changing RWIN to 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 (Note this is not a speed test):

Your RcvWindow limits you to: 20480 kbps (2560 KBytes/s) @ 200ms
Your RcvWindow limits you to: 8192 kbps (1024 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 54 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00010000

Precedence (priority) = 000 (routine)
Delay = 0 (normal delay)
Throughput = 1 (high throughput)
Reliability = 0 (normal reliability)
Cost = 0 (normal cost)
...If Wile E. Coyote had enough money to buy all that ACME crap,why didn't he just buy dinner???..
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earthmofo
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Posts: 1128
Joined: Fri Nov 17, 2000 12:00 am
Location: Providence, RI USA

Post by earthmofo »

For Windows XP try these:


DefaultReceiveWindow = Your Download Cap / 8 * 1024
DefaultSendWindow = Your Upload Cap / 8 * 1024
DisableAddressSharing = 1
InitialLargeBufferCount = 200
InitialMediumBufferCount = 480
InitialSmallBufferCount = 640
LargeBufferSize = 819200
MaxFastTransmit = 64000
MediumBufferSize = 150400
PriorityBoost = 0
SmallBufferSize = 12800
TransmitWorker = 32
FastSendDatagramThreshold = 1024
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitsOnReceive = 0
GlobalMaxTcpWindowSize = Leave Blank 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 = Leave Blank or 63888
MaxConnectionsPer1_0Server = 20
MaxConnectionsPerServer = 10
DefaultTTL = 64
DisableUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = same as you have now
"A never ending quest for knowledge as with knowledge comes wisdom"

Main System running Windows XP Pro: Intel Celeron 2.4 Ghz, 1 Gig Ram, 2 80 gig WD 7200 rpm HD's, Radeon 9200 Pro, Envision EN9110 19" LCD Display, HP 9500 CD-RW, D-Link DFE-530TX+ PCI Adapter, D-Link DI-704P Router, Motorola SB5100 Cable Modem with Cox HSI
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