Tweaking my Dsl

[MustangGrl]

Any Suggestions?





TCP options string = 020405aa01010402

MTU = 1490
Unrecognized MTU, or MTU = 0.

MSS = 1450
Maximum useful data in each packet = 1450, which equals MSS.

Default Receive Window (RWIN) = 20350
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 20350
For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
510400 (MSS x 44 * scale factor of 8)
255200 (MSS x 44 * scale factor of 4)
127600 (MSS x 44 * scale factor of 2)
63800 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 814 kbps (101.75 KBytes/s) @ 200ms
Your RcvWindow limits you to: 325.6 kbps (40.7 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 52 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[mnosteele52]

Please read here (http://forums.speedguide.net/showthread.php?s=&threadid=85224) so that we can properly help you.:)

[MustangGrl]

1. Downloaded cable nut but when I go to retrieve current registry values it doesn't have anything

2. Dsl Connection from MSN not sure if PPOE

3. MSN 768Down and 128 up

4. already posted the tcp/ip analyzer

5. average speed 730/136

6. Windows Xp

Anything else?

[mnosteele52]

OK my records show MSN DSL (provided by Qwest) as normal DSL, to make sure..... do you have to log in when you go online or are you always online?:D ;)

[MustangGrl]

I'm always on when I start up my computer

[mnosteele52]

OK great, first we need to get your MTU set to 1500, that's an odd error message from the TCP/IP Analyzer:

MTU = 1490
Unrecognized MTU, or MTU = 0.

Try the DSLR Tweak Test (http://www.dslreports.com/tweaks) and let me know what it says your MTU is (just ignore the other things it tells you). As for CableNut.... it's not going to tell you any of your settings unless you manually add them because there are no hard coded TCP/IP settings in 2K & XP. Once we get your MTU right we can get the rest of your settings straight.:) :D

[MustangGrl]

My modem went out on me so i have to wait for msn to send me another, as soon as I get the new modem i'll post what the dsl reports says. Thanks for trying to help me.

[MustangGrl]

Heres the tweak test. ( I just got my new modem)



Your Tweakable Settings:
Receive Window (RWIN): 64440
Window Scaling: off
Path MTU Discovery: ON
RFC1323 Window Scaling: OFF
RFC1323 Time Stamping: OFF
Selective Acks: ON
MSS requested: 1432
TTL:
(less any hops behind firewall)
128
TTL remaining: 112

Notes and recommendations:
Change MTU to 1500 (FAQ #652, #695)
Choose RWIN between 8592 and 20048 (FAQ #586)
download/use DRTCP .. (FAQ #578)
Read the tweak FAQ


Example 146000 byte download
Actual data bytes sent: 146000
Actual data packets: 102
Max packet sent (MTU): 1472
Max packet recd (MTU): 1472
Retransmitted data packets: 0
sacks you sent: 0
pushed data pkts: 5
data transmit time: 1.209 secs
our max idletime: 175.8 ms
transfer rate: 60821 bytes/sec
transfer rate: 486 kbits/sec
This is not a speed test!
transfer efficiency: 100%


Notes and recommendations:
Good data stream (no/few rexmits)


ICMP (ping) check
Minimum ping: 88 ms
Maximum ping: 91 ms
Ping stability:
91 88 90 89 89 91 90 89 89 89


Notes and recommendations:
Looking good

[MustangGrl]

and heres the tcp/ip analyzer

TCP options string = 0204059801010402

MTU = 1472
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.

MSS = 1432
Maximum useful data in each packet = 1432, which equals MSS.
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.

Default Receive Window (RWIN) = 64440
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 64440
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
504064 (MSS x 44 * scale factor of 8)
252032 (MSS x 44 * scale factor of 4)
126016 (MSS x 44 * scale factor of 2)
63008 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 2577.6 kbps (322.2 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1031.04 kbps (128.88 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 116 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[crazyjw1971]

MSN is PPoE last time I checked.

Set your MTU to 1492.

Set your Default Receive Window to 17424.

When I had Verizon DSL (also PPPoE), I acheived the best results with these settings.

Try them and see what results you get.

[MustangGrl]

I tried changing it using tcp optimizer but I still get this

MTU = 1472
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.

MSS = 1432
Maximum useful data in each packet = 1432, which equals MSS.
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.

Default Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 bits
Unscaled Receive Window = 64240
For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
504064 (MSS x 44 * scale factor of 8)
252032 (MSS x 44 * scale factor of 4)
126016 (MSS x 44 * scale factor of 2)
63008 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 52 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[mnosteele52]

OK MustangGrl I'm assuming you are using MSN's software? If so look in my Help & Tips link and try the fixes for your MTU, as crazyjw1971 said, it should be 1492, See if you can fix it, if now we can adjust your settings around it. Either way that RWIN is no good for your connection.:) :D

[Andrzej]

second post MustangGrl is as folow:
...1. Downloaded cable nut but when I go to retrieve current registry values it doesn't have anything
2. Dsl Connection from MSN not sure if PPOE
3. MSN 768Down and 128 up
4. already posted the tcp/ip analyzer
5. average speed 730/136
6. Windows Xp...

:D so please explain MTU value for wXP PPPoE
not for: 95,98,se,me,2k
PS
Q firmware PPPoE? (need manualy login)
QQ modem/router; router? (NOT need mlogin)
QQQ PPPoE setting in XP? (NOT need mlogin)

[MustangGrl]

I've tried everything but cannot change the mtu this is what its still saying


TCP options string = 0204059801010402

MTU = 1472
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.

MSS = 1432
Maximum useful data in each packet = 1432, which equals MSS.
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.

Default Receive Window (RWIN) = 20650
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 20650
For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
504064 (MSS x 44 * scale factor of 8)
252032 (MSS x 44 * scale factor of 4)
126016 (MSS x 44 * scale factor of 2)
63008 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 826 kbps (103.25 KBytes/s) @ 200ms
Your RcvWindow limits you to: 330.4 kbps (41.3 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 116 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[mnosteele52]

OK then let's work with the MTU you have, first remove DrTcp (I saw your post at DSLR - don't listen to them:( ) then use the following settings in CableNut:

DefaultReceiveWindow = 98304
DefaultSendWindow = 16384
DisableAddressSharing = 1
InitialLargeBufferCount = 100
InitialMediumBufferCount = 240
InitialSmallBufferCount = 320
LargeBufferSize = 81920
MaxFastTransmit = 6400
MediumBufferSize = 15040
PriorityBoost = 0
SmallBufferSize = 1280
TransmitWorker = 32
FastSendDatagramThreshold = 1024
EnableFastRouteLookup = 1
EnablePMTUDiscovery = 1
IgnorePushBitsOnReceive = 0
GlobalMaxTcpWindowSize = 31504
MaxFreeTcbs = 8000
MaxHashTableSize = 16384
MaxNormLookupMemory = 5000000
SackOpts = 1
SynAttackProtect = 1
Tcp1323Opts = 0
TcpLogLevel = 1
TcpMaxDupAcks = 2
TcpMaxHalfOpen = 100
TcpMaxHalfRetried = 80
TcpRecvSegmentSize = 1432
TcpSendSegmentSize = 1432
TcpTimedWaitDelay = 30
TcpUseRFC1122UrgentPointer = 0
TcpWindowSize = 31504
MaxConnectionsPer1_0Server = 10
MaxConnectionsPerServer = 8
DefaultTTL = 64
DisableUserTOSSetting = 0
TcpMaxDataRetransmissions = 6
DefaultTOSValue = 92

Also do the following:

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. 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 (http://forums.speedguide.net/showthread.php?s=&postid=643301#post643301)). 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 (http://beam.to/spybotsd), anything checked in red is spyware and safe to remove.

P.S. By chance are you using a router?

:D :)

[MustangGrl]

nope not using a router, I just did the settings you told me so Im going to do a restart and see how it works. Thanks for your help

[MustangGrl]

ok it seems to be working good but the weirdest thing is my speedtests now there 722/79 and with my older modem I was getting 730/136..What would cause this? Its a different modem then what I had before so maybe thats it. It doesn't seem slower though it seems faster. Is there any way I can increase the MTU?I've tried using tcp optimizer but it wont change it. I'm running Windows Xp Home.

TCP options string = 0204059801010402

MTU = 1472
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.

MSS = 1432
Maximum useful data in each packet = 1432, which equals MSS.
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.

Default Receive Window (RWIN) = 31504
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 31504
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
504064 (MSS x 44 * scale factor of 8)
252032 (MSS x 44 * scale factor of 4)
126016 (MSS x 44 * scale factor of 2)
63008 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 1260.16 kbps (157.52 KBytes/s) @ 200ms
Your RcvWindow limits you to: 504.064 kbps (63.008 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 52 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 01011100
Precedence (priority) = 010 (immediate)
Delay = 1 (low delay)
Throughput = 1 (high throughput)
Reliability = 1 (high reliability)
Cost = 0 (normal cost)

[mnosteele52]

OK you said you tried the fixes for your MTU from my Help & Tip slink but did you read and try them all? Did you try the one from Bob Carrick? I don't want you to use the TCPOptimizer to set yout MTU, that won't help.:)

[MustangGrl]

I dont have any of these values in the registry.
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic
es\Class\Net\0000 "IPMTU"= set to proper MTU value.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic
es\Class\Net\0000\Ndi\ params\IPMTU = set it to proper MTU value.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic
es\Class\Net\0002 "IPMTU"= set it to proper MTU value.

HKLM\System\CurrentControlSet\Services\ICSharing\S
ettings\General\"internetMTU"= set it to proper MTU value.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic
es\Class\Net\0005

What else should I try to increase the mtu? its still at 1472

[crazyjw1971]

Hey MustangGrl,

This may sound like a dumb question, but have you ever had AOL on this PC?

[MustangGrl]

No I've never had aol.

[MustangGrl]

Its weird I get a constant 1192/149 from pcpitstop but from any other test I get about anywhere between 700-722/79. I had this thing in my network places when I installed my msn broadband and it was called internet gateway and it showed my connection speed as 864. But for some reason its gone, I have no idea what happen to it. I still can't increase my mtu though I think maybe if I can get the increased it will help alot.

[Andrzej]

IMVHO what I know from your thread & posts - & my comments
MSN; CAPS 768/128; PPPoE
wXP after instaling firmware - yours: msn broadband and it was called internet gateway
MTU=1472 MSS=1432 - fixes by ISPfirmware & also not posible to change so MUST be accepted
first known speed test 730/136 - unknown settings: OSstartup; TPC/IP
acctual speed test 722/79 - explained below
:2cool: TCP/IP acctualy with mnosteele52 settings with CN
exactly as follow:
dwl 768kbsp; up128kbps;
MTU=1472; MSS=1432;
TcpWindowSize = 31504 =22x1432(MSS)
tweaking goal 90% CAPS it is mean in this case 691/115
above was reached in dwl 722 ... but not in upl 79
similar results I have
in PC with small RAM amount & relatively weakPC to TARGETs
:D ... BTW
1. PPPoE is build in on wXP: MTU=1480; MSS=1440 - so firmware NOT need to install
2. router build in PPPoE: also NO firmware, wXP MTU=1492; MSS=1452