something is wrong with my comcast speed upgrade . $10 tier addon

vizionblind · Post by **vizionblind** » Fri Jan 28, 2005 8:20 pm

was normally at comcast pro. downgraded *sort of* to the comcast $10 tier addon which is 6000/768 or whatever the number is.

My upload speeds register at 700 but my download is stuck at 3980 .

I called comcast twice but they see nothing wrong on their end. Why am I only getting 3980 download when I should be closer to 6000?

TCP options string = 020405b40103030201010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.

Default Receive Window (RWIN) = 256960
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
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)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):

Your RcvWindow limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 51 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000

fazerking · Post by **fazerking** » Sat Jan 29, 2005 12:24 am

Try this...

TCP Receive Window 64240

follow other setting as coffee always suggest.

vizionblind · Post by **vizionblind** » Sat Jan 29, 2005 12:48 am

same thing, only 3052 down, with 701 up. I am nowhere near 6000 download now....

fazerking · Post by **fazerking** » Sat Jan 29, 2005 1:05 am

Humm....I think u should wait for coffee to reply then.

mnosteele52 · Post by **mnosteele52** » Sat Jan 29, 2005 6:39 am

What OS are you using?

Try resetting your modem.

quicksilverTA · Post by **quicksilverTA** » Sun Jan 30, 2005 12:12 am

I'm getting the same thing. Great upload speed but same download speed I was getting before with the 4.0. I called comcast 3 times today, they are going to call me on monday and let me know if they find anything out. My upload speed is anywhere between 700 to 850 now. I'm sure i'll have to call them. If i find anything out i'll let you know.

mccoffee · Post by **mccoffee** » Sun Jan 30, 2005 12:29 am

I would leave the modem off for about 5 mins then trun it back on see what happens

quicksilverTA · Post by **quicksilverTA** » Sun Jan 30, 2005 12:36 am

They reset it about 15 times today, i've unpluged. I've done about everything. I'll try 5 min and let you know. I've plug right into the computer and bypassed the router also.

quicksilverTA · Post by **quicksilverTA** » Sun Jan 30, 2005 1:04 am

Well that didn't work. Had it off for about 15 min

Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Notes: Read the Analyzer FAQ if the above is not your IP address.

TCP options string = 020405b40103030001010402
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 = 52 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000