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Old 15-01-2009, 19:26   #72
azraelomega
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Join Date: Jan 2009
Posts: 2
azraelomega is an unknown quantity at this point
Re: 50Mbit Service Upstream Discussion

Hi again,

Carried out the tests as you suggested looks ok. But to give you an example of what I'm experiencing when it happens if I'm talking on ventrillo people hear what I said to them up to 20-30 seconds after I say it then its fine for a while then does the same.

Traceroutes

Tracing route to www.virginmedia.net [212.250.162.12]
over a maximum of 30 hops:

1 4 ms 5 ms 5 ms 10.17.236.1
2 6 ms 5 ms 5 ms osr01glen-ge19.network.virginmedia.net [81.97.49.5]
3 17 ms 17 ms 17 ms osr01edin-tenge72.network.virginmedia.net [62.30.251.45]
4 12 ms 11 ms 11 ms man-bb-a-ge-400-0.network.virginmedia.net [195.182.178.90]
5 25 ms 19 ms 17 ms gfd-bb-b-so-200-0.network.virginmedia.net [62.252.192.94]
6 19 ms 17 ms 18 ms win-bb-a-so-010-0.network.virginmedia.net [213.105.172.129]
7 19 ms 17 ms 17 ms win-dc-a-v900.network.virginmedia.net [62.253.188.162]
8 18 ms 18 ms 22 ms www.virginmedia.com [212.250.162.12]

Trace complete.

Tracing route to www.virginmedia.net [212.250.162.12]
over a maximum of 30 hops:

1 5 ms 5 ms 5 ms 10.17.236.1
2 6 ms 5 ms 5 ms osr01glen-ge19.network.virginmedia.net 81.97.49.5]
3 17 ms 17 ms 17 ms osr01edin-tenge72.network.virginmedia.net [62.30.251.45]
4 12 ms 16 ms 10 ms man-bb-a-ge-400-0.network.virginmedia.net [195.182.178.90]
5 18 ms 17 ms 17 ms gfd-bb-b-so-200-0.network.virginmedia.net 62.252.192.94]
6 19 ms 17 ms 17 ms win-bb-a-so-010-0.network.virginmedia.net213.105.172.129]
7 19 ms 20 ms 19 ms win-dc-a-v900.network.virginmedia.net [62.253.188.162]
8 19 ms 19 ms 20 ms www.virginmedia.com [212.250.162.12]

Trace complete.

There was 1 previous trace where the ping times @ hop 2 were 150ms+ but this was likely a blip. (but blip is what my internet connection is experiencing when doing activities requiring low latency on the downstream and upstream paths.

Ping

Ping statistics for 212.250.162.12:
Packets: Sent = 100, Received = 100, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 17ms, Maximum = 32ms, Average = 20ms

Upload Tests

Upload #1
------------------------------------------------------------------
File size transferred : 10.0 MB (10485760 bytes)
Total time taken : 45.56 seconds (45562 milliseconds)
Throughput : 230.0 KB/sec [Kilobyte-per-second]
= 0.23 MB/sec [Megabyte-per-second]
= 1840.0 Kbps [Kilobit-per-second]
= 1.84 Mbps [Megabit-per-second]

Upload #2
------------------------------------------------------------------
File size transferred : 10.0 MB (10485760 bytes)
Total time taken : 45.42 seconds (45422 milliseconds)
Throughput : 230.0 KB/sec [Kilobyte-per-second]
= 0.23 MB/sec [Megabyte-per-second]
= 1840.0 Kbps [Kilobit-per-second]
= 1.84 Mbps [Megabit-per-second]

Just for fun 1 download test:

Download #1
------------------------------------------------------------------
File size transferred : 100.0 MB (104857600 bytes)
Total time taken : 18.5 seconds (18500 milliseconds)
Throughput : 5667.0 KB/sec [Kilobyte-per-second]
= 5.67 MB/sec [Megabyte-per-second]
= 45336.0 Kbps [Kilobit-per-second]
= 45.34 Mbps [Megabit-per-second]

This all looks fine but your comments on the newsgroups that the QAM16 applied on my return path could be very easily saturated. My area is quite high in terms of cable usage a lot a few people on my street are already on the 50mbit serivce with a few others getting it soon.

Regards,

David
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