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Originally Posted by Chrysalis
this is very inconsistent nearly every ntl hop hasnt got steady figures
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It is characteristic of a public network that you will never get steady ping results from routers, because of dynamic traffic loading variations on the various circuits. Also, NTL operate a routing system whereby ICMP replies might return to you by a different physical route each time, even from the same router.
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when uploading I notice it will be 30kb/sec then a pause for about 1-2 secs where it just stops and then it carries on
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This is probably nothing to do with ping variations or traceroute problems. What you describe sounds like the TCP protocol recovering after a packet loss in one direction or another. If you put a protocol analyser between your PC and the cable modem you might be able to work out what is happening.
You should eliminate the possibility that the packet loss is happening in your own network (e.g. by an ethernet duplex mismatch).
A work-around might be to rate-limit your uploads at source so that they do not saturate your cable modem upload rate cap.