SG Broadband Community

I called my cable provider today and asked what iI was capped at he said 300/1520 does this make sence? I use Adelphia and have been getting some major packet loss with they said was only 2% at 2:30 a.m. . Any thoughts on what i should do? Thanks

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Fri Dec 14 02:33:58 2001.



SpeedGuide.net TCP/IP Analyzer
TCP properties for IP =
Note: Read the FAQ if the above is not your IP address.
Browser/OS = Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; T312461)

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) = 513920
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 64240
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
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: 20556.8 kbps (2569.6 KBytes/s) @ 200ms
Your RcvWindow limits you to: 8222.72 kbps (1027.84 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 18 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000




4538 connections tested since 03.10.2001.
Analyzer version: Beta 0.99

The caps sound about right 1500 kbps download and 300 kbps upload. If you're getting packet loss of 2% then you should lower your RWIN. If running XP try 29200. If 9x or ME try 51100.

300 up
1520 down

Divd it by 8 and thats your cps sec