Cox Cable is extremely slow ever since I installed a new modem

[l6i9l]

Installed Motorola Surfboard SB5100, now slower

Hello everyone, I'm located in Fairfax, VA. I use Cox Communications cable and I decided to stop renting their modem and buy a Motorola Surfboard SB5100. I've heard very good reviews and I installed it just fine. I called up my ISP, registered my MAC address for the SB5100, and it worked fine. However, today it is running extremely slow. I don't think it's because of the traffic in my area either because at around 3-4am, it was still running extremely slow.

It may not be the modem though. I plugged back in my rental modem and it was still slow, whereas it used to be fast. Maybe when I registered the MAC address, the operator did something funky? I don't know.

I was playing an online game and my ping was in the 1000's. I got kicked from every server because of my poor ping. My internet browsing is very sluggish as well.

Do you guys have any suggestions? My computer is conencted to a Linksys router, which routes connection to other computers in the household. I am the main computer, to which the actual modem is connected to.

My computer specs are:
Dell Dimension Desktop 4600 Series
2.66 GHz processor Pentium 4
768MB RAM
40GB harddrive
nVidia Ge Force FX5200 graphics card


I ran a Trace Route test and these were the results: (they didnt look good at all...)
http://www.chrisnguyen.net/traceroute.jpg

I also ran a Speedguide TCP/IP analyzer test:

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 = 119 hops

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

I did delete all my temp interenet files, ran spyware tests and virus tests, and tried restarting my computer. My average speed test results were ranging from 82kbps-700kbps which is still not as high as it normally is.

Any feedback is greatly appreciated guys, Thanks a lot for reading.

-Chris

[mccoffee]

Nothing you could do all that is on there end everyone with cox is having promblems

[jpalminteri]

I recently switched ISP's, actually DSL to Cable and I use a 5100 with 3 Mbps down and 256 Kbps up and the results are astounding. I previously used an RCA and wondered why anyone wanted cable. I suggest you power it off and then power it on during off hours and check to see what they have you provisioned as. Comcast is now using self provisioning which works well when one understands it. My 5100 syncs up almost immediately and is consistently superior and we are on a fairly busy loop. The RCA was the pits. I suppose you could have a defective unit, but I doubt it. Good Luck!

[mccoffee]

http://www.speedguide.net/read_articles.php?id=1197 post your cablemodem signals

i belive the address is 192.168.100.1

I know cox is or was having promblems all threw this forums i had nothing but people form cox what's odd id your first hop looks really really bad I would look at the wirring around the house see if you notice any dirty spiltters just to make sure.

[warangel]

Cox has been REAL slow for over a month now here in Kansas. I even had the Cox guys out to the house and had it checked. I noticed when I unplugged the modem it took almost an hour to get it to connect again. I know that is not my computer it's a new one and I have also tried my two laptops and my old computer and get the same results.:irate: I am going to drop Cox and go to AT&T it's got to be better.:nod:

[YARDofSTUF]

Cox has been REAL slow for over a month now here in Kansas. I even had the Cox guys out to the house and had it checked. I noticed when I unplugged the modem it took almost an hour to get it to connect again. I know that is not my computer it's a new one and I have also tried my two laptops and my old computer and get the same results.:irate: I am going to drop Cox and go to AT&T it's got to be better.:nod:

Its not that uncommon for the modem to take a while to sync, check your signal strengths, I hated AT&T.