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crc errors

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crc errors

i am having too many crc erros on my dsl interface, anybody has an ideaHuh
2 REPLIES
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RE: crc errors

CRC errors mean you are getting dirty data.

This can be caused by bad line quality.

A CRC check code is transmitted with any data. This is computed from the data received in the last block (size unknown).

When your modem receives the data and CRC check, it computes the CRC itself. If it matches, all is fine.

If it fails to match, then the data is considered invalid, and is either re-requested, or is dropped (expecting the next layer to do any work to get the data back).

The data can be perfectly fine itself, though the CRC bit can be damaged. However, the fact there is a CRC error happening, means data is dirty regardless.

They can eb caused by spikes of power in the line, bad line queality, signal bleed and RF interferance.

You can try checking your filters are not to blame (remove all filters and phones from the line for a day, not the easiest, but the quickest test). Move all equipment and cabling away from other electrical gear. Use better quality phone cable and test it from the master socket, and not from a extenstion.

Finaly, raise a ticket with +net, they may be able to help you more.
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RE: crc errors

thank you...