SG Broadband Community

Posted: **Fri Nov 23, 2001 4:06 pm**

TCP options string = 020405b40103030301010402

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) = 373760
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 46720
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: 14950.4 kbps (1868.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 5980.16 kbps (747.52 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 19 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

Posted: **Fri Nov 23, 2001 4:38 pm**

Who is your provider and what are your advertised rates?

Posted: **Fri Nov 23, 2001 5:05 pm**

adelphia upload capped at 128 download 300 i think

Posted: **Fri Nov 23, 2001 9:26 pm**

Time To Live or TTL could be higher. Also, do a speed test and post your results here in this thread.

Posted: **Fri Nov 23, 2001 9:32 pm**

http://bos.speakeasy.net

Posted: **Sat Nov 24, 2001 9:25 am**

I used that RWIN once with Adelphia and it worked well.

Do a speed test from HalfLifer's link so we can see your speeds.

Posted: **Sat Nov 24, 2001 10:33 am**

It's better to do a speed test from a location nearest yours. It will give a more reliable result, HL's test is from a Boston, MA site. Go here for a long list of test sites:
http://www.testmyspeed.com/ Pick a site that's closest to your location.

Posted: **Sun Nov 25, 2001 6:37 am**

Department Webserver
Your line speed:

1404.5 Kbps

172.1 K bytes/sec

Raw Data:

download start time: 1006688680151
download end time: 1006688680732
download time: 0.581
download size in thousands of bytes: 100
estimated line speed (K bits per second): 1404.5
estimated line speed (K bytes per second): 172.1

i picked this one from ohio, it was differant every time i ran it though, tried other sites as well but they became cached after one try.

Posted: **Sun Nov 25, 2001 9:58 am**

You need to clear your web history after every test to do multipule tests from the same site.

Do you have CableNut installed?

SG Broadband Community

is this good?

is this good?