Author Topic: AT&T DSL  (Read 3145 times)

Offline tweakzme

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AT&T DSL
« on: June 11, 2008, 12:58:02 pm »
help me tweak my at&t dsl express package
incoming 1536 kbps and outgoing 384 kbps

mccoffee

  • Guest
Re: AT&T DSL
« Reply #1 on: June 11, 2008, 04:55:05 pm »
Pleae take a tcpip analyzer  let me check the mtu wow I didnt' know they had att dsl speeds that high yet.
http://www.speedguide.net:8080/

Offline tweakzme

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Re: AT&T DSL
« Reply #2 on: June 11, 2008, 10:58:16 pm »
SpeedGuide.net TCP Analyzer Results
Tested on: 06.11.2008 23:53

 
TCP options string: 020405ac
MSS: 1452
MTU: 1492
TCP Window: 65535 (NOT multiple of MSS)
RWIN Scaling: 0
Unscaled RWIN : 65535
Reccomended RWINs: 63888, 127776, 255552, 511104
BDP limit (200ms): 2621kbps (328KBytes/s)
BDP limit (500ms): 1049kbps (131KBytes/s)
MTU Discovery: ON
TTL: 108
Timestamps: OFF
SACKs: OFF
IP ToS: 00000000 (0)




for my download/upload speed test i get about 1250 kbps for download and a 300-309 kbps upload speed

mccoffee

  • Guest
Re: AT&T DSL
« Reply #3 on: June 12, 2008, 12:17:37 am »
DefaultReceiveWindow = 192000
DefaultSendWindow = 98432
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 = 37960
MaxFreeTcbs = 8000
MaxHashTableSize = 16384
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 0
TcpLogLevel = 1
TcpMaxDupAttacks = 3
TcpMaxHalfOpen = 100
TcpMaxHalfOpenRetired = 80
TcpRecvSegmentSize = 1460
TcpSendSegmentSize = 1460
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 37960
MaxConnectionsPer1_0Server = 10
MaxConnectionsPerServer = 8
DefaultTimeToLive = 64
DefaultUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = 240

Offline tweakzme

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Re: AT&T DSL
« Reply #4 on: June 12, 2008, 02:09:31 am »
is there any difference between cablenut and speedguide's optimizer program?
and is cablenut having any major updates?

mccoffee

  • Guest
Re: AT&T DSL
« Reply #5 on: June 12, 2008, 05:14:28 pm »
Both are very good apps ,and good people that support  those programs since I"m one of them. 

The optimizer is good since it does have ping/traceroute tool plus it has an mtu function. 

Cablenut imho  is the best since it covers alot more settings  that the optimizer doesn't which for many the speed is better with cn.  The optimizer is great as well though it all varies. If you tweak though stick to one or the other. Here we only support Cablenut.

I hate thease types of questions since I help out on both sites as for updates  right now I think it's safe to say no for the moement with Vista ,and server 2008 you can't change those settings in the registry since most of the settings are taken out ,and now done by auto tunning ,and Compound TCP.  The reason for the taking out the settings is due to bottlenecking  with the use of firewalls ,and a few other things involing cpu usuage.  With auto off though  it determines the best settings by link speed.  With it auto on it has a mechisim that is determine by host to host which is good since it doesn't effect the rest of the network as much  since it's host to host.


I could be wrong though  about the updates  at both sites the staff does tend to tinker with new ideas outside the box stuff ,so who really knows.