Mtu

[David Cherry]

:confused: OK I've done the tweaks and checked out all the sites. Time to ask two dumb questions. 1) MS TCP Loopback Interface in my Enternet 300 properties still has MTU of 276 speed 10000000.
I never seem to find anything mentioned about this. Is it slowing me down? No tweaks that I have done has ever touched it. 2) My MSS is between 89 & 93 most of the time, what is a good number? Also when I test under diagnostics I get a reply time between 14 - 18 MS again what is a good number?
My down loads average 90kps when complete.
OS: Windows 98 4.10, I. E. update version 5.5, SP1
350 AMD K6 3D processor, 192 RAM 133mz SDRAM, 10GB 32X
Kingston EtheRx KNE110TX PCI fast Ethernet Adapter
(Alcatel-Speed Touch/Home USB DSL modem)
Enternet 300 V1.5, driver version 3.00
I think I got it all right? :rolleyes:

[EvilAjax]

Take the TCP/IP analyzer test. Copy and paste your results here. Everything on the results page EXCEPT your IP Address. Click here (http://forums.speedguide.net/optd.shtml) for the analyzer test. This will help us understand what you mean..

[David Cherry]

Here are the Test Results you asked for...DC

TCP options string = 020405ac01010402

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) = 63888
RWIN Scaling (RFC1323) = 0 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)
255552 (MSS x 44 * scale factor of 4)
127776 (MSS x 44 * scale factor of 2)

bandwidth * delay product:
Your RcvWindow limits you to: 2555.52 kbps (319.44 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1022.208 kbps (127.776 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 114 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[Lobo]

Are you on PPPoE, do you log on with name and password, what are your system specs and OS:)

[David Cherry]

Here's the info you asked for my IP is Pacbell
thanks for any info...DC
OS: Windows 98 4.10
I. E. update version 5.5, SP1
350 AMD K6 3D processor
192mb RAM 133mz SDRAM
10GB memory 32X hard drive
Kingston EtheRx KNE110TX PCI fast Ethernet Adapter
(Alcatel-Speed Touch/Home USB DSL modem)
Enternet 300 V1.5, driver version 3.00

[Lobo]

Try Default Recieve Window of 255552:)

[David Cherry]

Changed my rwin to 255552(and turned on scaling) but to be fair Pacbell's DSL is currently impaired and what ever their problem is could mess up my test results. Oh, I do "sign on" each time, actually "connection authorized" like AOL does. But of course we don't disconnnect very often. I've found that a larger rwin usually just gives me retransmissions but if I keep it just below having to turn on "scaling" I get no retransmissions...will let you know when Pacbell lifts the impaired status.
Thanks, for all the help...DC

[Lobo]

Don't worry to much about retransmissions, another ploy by you know who not to use to much of their bandwidth, so use itty bitty RWIN, BS:) :)

[lance-tek]

I get the impression you are not to fond of him lobo-

you know who I am talkin about, the guy you are always crackin on

[David Cherry]

LOBO... Here's the new test results, as you can see it's certainly better. Now we'll see in the real world, keep ya posted. Hey, just one more novice question? How fast can a PPPoE go? And by the way does anybody know what PPPuP is? My EnterNet 300 starts with it everytime! Told ya I was a novice. Seriously you guy's are great...thanks,DC

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 = 113 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000


:);)

[lance-tek]

PPP is all the same concept from what i understand. It is all logging on and I am pretty sure that at least PPPuP if not all PPP is linux based :)

don't know if it helps or not but, thought i would try :)