Internet issues for last 48 hours

[Derek]

Hopefully someone can help me without having to resort to calling the VM support lines (they were OK the last time I had to call them but even so...)

Anyway I'm having some issues with the internet connection that I started noticing yesterday morning. It happens with all the computers connected both wired and wireless.

Basically everything is fine until all of a sudden I lose connection and sites start timing out. Occasionally during the time out the 'Ready' light flashes for a bit then comes back but most of the time it stays solid when the connection is having issues.

The router I'm using has been rebooted, upgraded to latest firmware etc. with no resolve. In it's tool section pinging a couple of websites gives the following responses.

Originally Posted by D-Link

Please wait, resolving www.cableforum.co.uk....
Resolved to 87.106.129.133.
No response from host, retrying...
*SNIP*
Pings sent: 11
Pings received: 8
Pings lost: 3 (27% loss)
Shortest ping time (in milliseconds): 44
Longest ping time (in milliseconds): 47
Average ping time (in milliseconds): 45

Please wait, resolving www.bbc.co.uk....
Resolved to 212.58.227.72.
*SNIP*
Pings sent: 17
Pings received: 14
Pings lost: 3 (17% loss)
Shortest ping time (in milliseconds): 20
Longest ping time (in milliseconds): 56
Average ping time (in milliseconds): 27

The cable modem log shows

Originally Posted by Cable Modem

First TimeLast TimePriorityDescription
Tue Jan 15 20:06:55 2008 Tue Jan 15 20:06:55 2008 Critical (3)Started Unicast Maintenance Ranging - No Response received - ...

Any ideas regarding it or is it a case of removing the router, biting the bullet and calling the support line and hoping for the best?

[Derek]

Getting steadily worse.

Originally Posted by Speed Test

Tue, 15 Jan 2008 22:09:00 GMT

Test 1: 1024K took 18797 ms = 54.5 KB/sec, approx 449 Kbps, 0.44 Mbps
Test 2: 1024K took 1687 ms = 607 KB/sec, approx 5002 Kbps, 4.88 Mbps
Test 3: 1024K took 1656 ms = 618.4 KB/sec, approx 5096 Kbps, 4.98 Mbps
Test 4: 2048K took 36578 ms = 56 KB/sec, approx 461 Kbps, 0.45 Mbps

Overall Average Speed = approx 2752 Kbps, 2.69 Mbps


To repeat this test from the source server click here.

[Graham M]

What are your Cable Modem's signal levels like?

[Derek]

Downstream Lock : Locked
Downstream Channel Id : 30
Downstream Frequency : 403000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : 7.3 dBmV
Downstream SNR : 40.7 dB

and

Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 29200000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 52.5 dBmV
Upstream Mini-Slot Size : 2