please help tweak adelphia

nailem · Post by **nailem** » Wed Apr 28, 2004 4:18 pm

i have adelphia with a motorola modem running windows 98. i downloaded the vtcp386 and ndis updates. changed to 10 half mode. i also downloaded cablenut. my speed is at 390.6kb down and 226kb up. speed checked at speakeasy.

here is my resalts:
thank you in advance for any help.

TCP options string = 020405b401010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.

Default Receive Window (RWIN) = 64240
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 64240

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)
bandwidth * delay product (Note this is not a speed test):

Your RcvWindow limits you to: 2569.6 kbps (321.2 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1027.84 kbps (128.48 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 54 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 01011100

Precedence (priority) = 100 (flash override)
Delay = 1 (low delay)
Throughput = 1 (high throughput)
Reliability = 0 (normal reliability)
Cost = 1 (low cost)

mccoffee · Post by **mccoffee** » Wed Apr 28, 2004 4:58 pm

changed to 10 half mode try 100full and half. YOur settings are good speeds are way off. Turn off modem for about 20mins then trun it on and see if speeds pick up.

nailem · Post by **nailem** » Thu Apr 29, 2004 9:05 pm

i left my setting on 10 half and powered shut down and restarted.
new speed test at speakeasy.n was: 403.4 down/225 up

switched to 10 full shut down, restarted got
413.2 down/225 up at speakeasy.n
useing the speed test SG speed test on the home page i get 1.693mb
why such a big difference? i will try switching to 100 half and 100 full and post my resalts. thanks again.

mccoffee · Post by **mccoffee** » Thu Apr 29, 2004 10:30 pm

With the duplex there isn't a right answer it all depends on modem/isp

nailem · Post by **nailem** » Sun May 02, 2004 8:58 am

tried all duplex settings here are the results from speakeasy.n
10 half: 403.4 down/ 225 up
10 full: 413.2 down/ 225 up
100 half: 226.1 down/ 240 up
100 full: 413.2 down/ 222 up

if i check my speeds at sg.speed test i get:
10 half didnt check
10 full: 1.693mbps down
100 half: 1.205mbps down
100full: 1.14 down

why is there such a big difference between the two speed check web sites.
please help if there is any thing else i can do. thanks