ADSL Disconnects

[-=Stalwart=-]

My connection is okay, but the only problem I seem to have is being disconnected all of a sudden after varied periods of time. I have one of those ADSL Direct Access PPPoA (specifically Bellsouth) ones that do not require a network card of something of that sort (it connects to the net kind of like a dial-up modem). A lot of the time I'll be web browsing or something and suddenly it disconnects on me. I have no idea why. I have the MTU currently set to 1500, but whenever I use 1492, it seems to disconnect a lot.

I seem to get less disconnects with 1500. So pretty much I have MTU: 1500, MSS: 0, RWIN: 0, and NDI Cache Size: 0.

Any ideas if it my be the MTU settings? or something else?
Any help in solving this is greatly appreciated!

If I need to post more info on my settings, let me know.

[EvilAjax]

Your MTU should be 1500, 1492 is only for PPPoE.. not PPPoA..

[EvilAjax]

Yes that would be nice, please take the analyzer test and post your results. Please edit out your IP Address. Thank you.

[-=Stalwart=-]

Do you think that MTU settings and stuff like that have to do with if you DSL my disconnect all of a sudden or not?

Here's what I got using Analyzer:

TCP options string = 020405b40103030001010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.

Default Receive Window (RWIN) = 11680
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 11680
RWIN is 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:
Your RcvWindow limits you to: 467.2 kbps (58.4 KBytes/s) @ 200ms
Your RcvWindow limits you to: 186.88 kbps (23.36 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.

MTU Discovery (RFC1191) = ON

Time to live left = 47 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000


The highest ispeed will let me go for RWIN is 8x...... anyone know another good program like ispeed I can get for free ??

[lance-tek]

however I use 1496 on my machine and I am on cable.........it works better for me this way





TCP options string = 020405b00103030301010402

MTU = 1496
MTU is fully optimized for broadband.

MSS = 1456
Maximum useful data in each packet = 1456, which is equal to MSS.

Default Receive Window (RWIN) = (I don't think so)
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = (I don't think so)
For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
512512 (MSS x 44 * scale factor of 8)
256256 (MSS x 44 * scale factor of 4)
128128 (MSS x 44 * scale factor of 2)
64064 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 17952 kbps (fast KBytes/s) @ 200ms
Your RcvWindow limits you to: 7180.8 kbps (fast KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 53 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[cablenut]

Lance you like 448800 as a RWIN?

[EvilAjax]

I wonder who's RWIN is 448800?

[EvilAjax]

Nevermind

[lance-tek]

you guys that is so wrong of you lol

You shouldn't fib like that lol

[EvilAjax]

LOL you should've put a fake one in... maybe we wouldn't have caught on

[lance-tek]

it's OK I am gonna try some new ones, changing a few things in and out trying for better speeds, doubt it will make much difference, but worth a try

[lance-tek]

you are smokin what? lol

[EvilAjax]

Done

[lance-tek]

cool thx man

[EvilAjax]

No problem. Hey I just tried to add you to my contact list on ICQ... I sent you a request to let me add you... hehe. Just letting you know.