crc errors

CJD · 03-05-2009, 12:31

Over the last 4-5 days everything I download from winamp to nvidia drivers come up with crc error or package corupted. have 20 mb package running throu netgear router and 3 pcs 1 laptop. All have the same problem just in case of virus 1 of the pcs has been disconnected fdisked clean install and then connected straight to the cm still has the same problem ?????

cm details below
Downstream Receive Power Level : 5.3 dBmV
Downstream SNR : 40.1 dB
Upstream transmit Power Level : 51.0 dBmV

any help be greatfully receaved thanks

Jon T · 03-05-2009, 12:43

Clear your temporary internet files, run a defrag and maybe checkdisk if needed(though unlikely), do this on all your PC's.

Also delete any proxy settings that you may have set.

CJD · 04-05-2009, 10:03

thanks for tip but tried that the pc that had the fresh install has the same problem to so its not a problem this side of the router tried different router to getting lots of chop on the tv package so gussing problem on Virgins side just anoying as when go throu to tech support they repeat like a mantra unplug your wirless router dont have one never want one, and then connect the pc directly to the cm done it and still dont work. tried a friends cable connection and he downloads the files fine. Could it be a problem with the new docsis file thats been uploaded 4 days ago according to the cm logs it is about when all the problems started... Thanks

Ignitionnet · 04-05-2009, 10:36

It's not a problem with the new DOCSIS file that is fine.

Are you using the same ethernet cable to connect router to modem and when you connected a PC directly?

Have you spoken to someone who has checked your upstream SNR and done appropriate tests to your cable modem?

CJD · 04-05-2009, 10:50

Using one ntl provided and also tried 2 others just in case

Virgin media tech supports tools according to them not work atm so cant test the modem tried calling 4 times yesterday to speak to the english call center as not very impressed with the level of support from the indian call center. Web browsing is fine but any and i mean any files downloaded are corupted ie error on install package has crc errors in it.

Downstream Lock : Locked
Downstream Channel Id : 41
Downstream Frequency : 299000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 6952 Ksym/sec
Downstream Interleave Depth : taps12Increment17
Downstream Receive Power Level : 5.6 dBmV
Downstream SNR : 40.5 dB

Upstream Lock : Locked
Upstream Channel ID : 4
Upstream Frequency : 47400000 Hz
Upstream Modulation : QAM16
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 51.0 dBmV
Upstream Mini-Slot Size : 2

those are the settings on the modem thanks for teh reply

Ignitionnet · 04-05-2009, 11:32

Have you tried some big pings to a website?

Try 100 1460 byte pings to www.linx.net say and see if any come back corrupted. They should be able to check your modem at least and see if it reports any CRCs arriving.

The tools don't appear to be totally compatible with the equipment you are connecting to, a Motorola BSR.

techyguy4 · 04-05-2009, 18:55

Open www.routerlogin.net/basicsetting.htm
username: virgin and password: password
Under advanced, go to WAN settings, and put tick on "disable spi firewall".
Click apply.
Restart router and try downloading something. Hope this helps. :-)

Jon T · 07-05-2009, 07:16

Quote:

Originally Posted by techyguy4

Open www.routerlogin.net/basicsetting.htm
username: virgin and password: password
Under advanced, go to WAN settings, and put tick on "disable spi firewall".
Click apply.
Restart router and try downloading something. Hope this helps. :-)

Quote:

Originally Posted by CJD

just in case of virus 1 of the pcs has been disconnected fdisked clean install and then connected straight to the cm

---------- Post added at 08:16 ---------- Previous post was at 08:15 ----------

Looks like he's already ruled out the router

pazor · 26-05-2009, 10:49

did you get this sorted? Im having bad problems with rar files being corrupt crc errors.