Help optimize Comcast please

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September 07, 2010, 12:13:46 am

Cablenut - Broadbandnuts - DSLnuts > Cablenut Support > Cablenut Program Support (Moderators: cablenut, JonG) > Topic: Help optimize Comcast please

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Topic: Help optimize Comcast please (Read 248 times)

dstr

A New Nut

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Posts: 2

Help optimize Comcast please

« on: June 29, 2010, 07:23:36 am »

I have Comcast 12/2.

« SpeedGuide.net TCP Analyzer Results »
Tested on: 06.29.2010 09:17
IP address: 71.226.x.xxx
Client OS: Windows XP

TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 256000 (NOT multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 64000
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 10240kbps (1280KBytes/s)
BDP limit (500ms): 4096kbps (512KBytes/s)
MTU Discovery: ON
TTL: 53
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

I made a couple of adjustments. Here is my latest.

« SpeedGuide.net TCP Analyzer Results »
Tested on: 06.29.2010 14:25
IP address: 71.226.x.xxx
Client OS: Windows XP

TCP options string: 020405b40103030201010402
MSS: 1460
MTU: 1500
TCP Window: 256960 (multiple of MSS)
RWIN Scaling: 2 bits (2^2=4)
Unscaled RWIN : 64240
Recommended RWINs: 64240, 128480, 256960, 513920, 1027840
BDP limit (200ms): 10278kbps (1285KBytes/s)
BDP limit (500ms): 4111kbps (514KBytes/s)
MTU Discovery: ON
TTL: 53
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)

Thanks.


« Last Edit: June 29, 2010, 12:42:16 pm by dstr »	Logged

mccoffee

Administrator Nut
Certifiable Nut

Online

Posts: 3902

Re: Help optimize Comcast please

« Reply #1 on: July 01, 2010, 03:38:20 pm »

Try theazse in cablenut

DefaultReceiveWindow = 921600
DefaultSendWindow = 128000
DisableAddressSharing = 1
InitialLargeBufferCount = 200
InitialMediumBufferCount = 480
InitialSmallBufferCount = 640
LargeBufferSize = 819200
MaxFastTransmit = 64000
MediumBufferSize = 150400
Priority Boost = 0
SmallBufferSize = 12800
TransmitWorker = 32
FastSendDatagramThreshhold = 4096
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitsOnReceives = 0
GlobalMaxTcpWindowSize = 2502440
MaxFreeTcbs = 8000
MaxHashTableSize = 16384
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 1
TcpLogLevel = 1
TcpMaxDupAttacks = 3
TcpMaxHalfOpen = 100
TcpMaxHalfOpenRetired = 80
TcpRecvSegmentSize = 1460
TcpSendSegmentSize = 1460
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 2502440
MaxConnectionsPer1_0Server = 20
MaxConnectionsPerServer = 10
DefaultTimeToLive = 64
DefaultUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = 240


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