Advice

[Banme]

when i connect it shows "connected at 1,472,000 bps. Its a DSL connection, i believe pppoa (spelling?), can anybody tell me what to set Maxmtu and rwin at, i hear from some mtu should be 1492, and from others 1500. and all kinds of different stuff for rwin.

[joecool169]

http://forums.speedguide.net/showthread.php?s=&threadid=49196



you should read this Evilajax is the ppoe wiz around here I think but MTU for ppoe is definately 1492 not 1500


As for Rwin you just have to play with it but the SG patches areagood place to start

[Banme]

Well, in my network settings it says, "Alcatel Speedtouch USB ADSL PPPoA" NOT PPPoE, what is the difference between the 2?

Also, i have MTU set to 1492 but whenever i connect to the TCP analyzer test it always says i have a MTU of 576 and a MSS of 536, whats up with that? dunoptimzer shows my mtu as set to 1492 in my registery but when i connect to this test program it says 576. The RWIN speed is showing up properly though

[joecool169]

Better wait for someone who knows more than me

[Kip Patterson]

For PPPoA the max MTU is 576. You can set your computer higher, but the analyser will report 576 because that is all PPPoA will do.

Kip

[Banme]

Welp, i just got 1492 MTU to work on PPPoA, also when i run speed tests i get anywhere from 700 to 1200 kbp/s download, should i settle for this amount or is it worth trying to get higher?

------------------------------------------------------------------------------------

TCP options string = 020405ac0103030201010402

MTU = 1492
MTU seems to be optimized for PPPoE... If you are not on a PPPoE connection, consider increasing your MTU to 1500 for optimal throughput.

MSS = 1452
Maximum useful data in each packet = 1452, which is equal to MSS.
MSS is optimized for PPPoE. If you are not on a PPPoE connection, consider increasing your MTU value.

Default Receive Window (RWIN) = 255552
RWIN Scaling (RFC1323) = 2 bits
Unscaled Receive Window = 63888
RWIN is 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)
127776 (MSS x 44 * scale factor of 2)
63888 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 10222.08 kbps (1277.76 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4088.832 kbps (511.104 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 49 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[joecool169]

Looks good I think Rwin scaling is supposed to be 1 or 3 but I'm not sure of it everything else looks alright

[Augusto]

Think have to start reading the menu , and cablemodem stuff in here , there u will find the answer like all of us is finding it...

Change your rwin .. it would work for u!!!!!