Author Topic: 100mbit fiberoptic connection  (Read 1149 times)

Offline Tarmacteeth

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100mbit fiberoptic connection
« on: June 20, 2004, 05:03:18 pm »
A couple of months ago I upgraded my 10mbit line to 100mbit. Upload and download are the same, 100mbit.
One of the first things I noticed was that my speed ain't what it should be, but I havent had the time to investigate this further until now....haven't been using my computer for over a month now cause of too much work :-(. My neighbour has the same connection and the speed for him is blazing fast. He also has the same network adapter as me (intel pro 1000mt), so I guess it could be my old cablenut settings that still are in use, that messes up my speed.
Can anyone here please suggest cablenut-settings for my connection?

Here's what the analyzer had to say.

Many thanks in advance!

TCP options string = 020405b40103030801010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.
 
Default Receive Window (RWIN) = 15823872
RWIN Scaling (RFC1323) = 8 bits (scale factor of 16)
Unscaled Receive Window = 61812

For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
 64240 (MSS x 44)  
bandwidth * delay product (Note this is not a speed test):

Your RcvWindow limits you to: 632954.88 kbps (79119.36 KBytes/s) @ 200ms
Your RcvWindow limits you to: 253181.952 kbps (31647.744 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 35 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00110000

Precedence (priority) = 000 (routine)
Delay = 0 (normal delay)
Throughput = 1 (high throughput)
Reliability = 1 (high reliability)
Cost = 0 (normal cost)

mccoffee

  • Guest
Re:100mbit fiberoptic connection
« Reply #1 on: June 20, 2004, 07:22:26 pm »
Lower that rwin  what windows version you have that rwin  is ridcuouslly  high

Offline Tarmacteeth

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Re:100mbit fiberoptic connection
« Reply #2 on: June 21, 2004, 12:04:36 pm »
Ok, thanks for the advice,WindowsXP Pro, 1024ram and 3ghz intel is what I use. I cut the rwin value in half now, but I get the exact same lousy speed.
Since I'm new to this I would appreciate if someone could give me some cablenut settings, that you'd think would fit a 100mbit connection.I have read the basics on tweaking here, but can't seem to get it right, and the Rwin Calculator can't handle the bandwith numbers for 100mbit :-(. I can live with this speed, but since I know that the guy nextdoor to me has almost a 50% faster connection than me even though we pay for the exact same service it's a little annoying....
« Last Edit: June 21, 2004, 12:08:28 pm by Tarmacteeth »

mccoffee

  • Guest
Re:100mbit fiberoptic connection
« Reply #3 on: June 21, 2004, 01:06:31 pm »
try thease in cablenut higher  rwins doesn't mean faster



DefaultReceiveWindow = 9216000
DefaultSendWindow = 128000
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
MaxFreeTcbs = 8000
MaxHashTableSize = 16384
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 1
TcpLogLevel = 1
TcpMaxDupAcks = 2
TcpMaxHalfOpen = 100
TcpMaxHalfRetried = 80
TcpRecvSegmentSize = 1452
TcpSendSegmentSize = 1452
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = leave blank
MaxConnectionsPer1_0Server = 20
MaxConnectionsPerServer = 10
DefaultTTL = 64
DisableUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = 240

1. Under your LAN connection - properties - general tab, uninstall all the protocols there that you do not need.



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. Set your NIC duplex mode to 10mb half duplex for Cable, for DSL it is ISP dependent unless you are using a router, if so then set it to 100mb full duplex for both Cable & DSL (the instructions are in my Help & Tips link). If you are using a router make sure you have the latest firmware.



4. Clear your temporary internet files.



5. Power cycle your modem, unplug it for atleast 15 seconds.



6. Download and update then do a scan with SpyBot 1.2 http://beam.to/spybotsd & Ad Aware 6.0 http://www.lavasoftusa.com/support/download to remove any spyware then install and update SpywareBlaster to stay spyware FREE. YOU MUST USE BOTH AD AWARE & SPYBOT TO ENSURE YOU ARE SPYWARE FREE SINCE ONE FINDS WHAT THE OTHER MISSES.



7. Make sure you do the faster web page tweak in Read1st link.



8. If you have Zone Alarm as a firewall uninstall it then visit Zonelabs.com for further instructions on removing it's left over junk.



9. Install Outpost Firewall http://www.agnitum.com\ or Sygate Firewall http://www.sygate.com/ , both have FREE and Pro versions and are heads above ZA.



10. Scan for viruses with your antivirus app, if you do not have one get one IMMEDIATELY, AVG 6.0 http://www.grisoft.com/us/us_dwnl_free.php is an excellent FREE AV app.



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

Offline Tarmacteeth

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Re:100mbit fiberoptic connection
« Reply #4 on: August 10, 2004, 11:55:17 am »
Thanks alot for your advice mccoffee!

It seems like the settings you gave me are by far the best so far, so I'll stick with em.

Thanks again!