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Originally Posted by BBKing
SNR is fine, the higher the better in fact, but over 30 is absolutely no problem at all (it should work down to 20 and often does below 20). The trace looks like either you have an application using the net connection without your knowledge (like P2P software, spyware or a virus) or the local area is congested. Not in work for a few days so can't check.
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Empirically I see probs if return power is high/approaching 58Dbmv and SNR drops to 30Db or below during what I suspect is high thermal stressing on non forced ventilated roadside cabs typically during Summer.
Although having been disconnected from UBR (Ranging failures) during early hours over several (unsupported by CS<g>) weekends prior to XMAS I suspect that despite NTL's apparent recent re-segmentation and UBR upgrades, both Brighton's indigenous and migratory student population<g> probably aggravate the unbalanced upstream loads during XMAS (and other) recesses anyway!
So not sure of the validity/usefulness of comparing a different UBR (&/or upstream)port over several day lag but FWIW here's a 150k Hove UBR port comparison(UBR private IP partially obfuscated and relevant first two hops only listed on subsequent tracing) along with salient extracts from STB User info:
SNR 33db, Return Power 56dbmV, Timers and Pre/Post RS errors are zero.
Diag log indicates "Tuning parameters corrupt" interposed between "Reboot" and "CM operational" entries which appears to be typical on DTVi1000 hardware on these networks.
C:\Documents and Settings\Tony>tracert news.bbc.co.uk
Tracing route to newswww.bbc.net.uk [212.58.226.30]
over a maximum of 30 hops:
1 11 ms 30 ms 7 ms 10.64.2xx.1
2 9 ms 8 ms 21 ms brtn-t2cam1-a-ge95.inet.ntl.com [80.3.66.13]
3 42 ms 8 ms 11 ms brtn-t2core-a-ge-wan61.inet.ntl.com [80.3.65.5]
4 10 ms 11 ms 10 ms gfd-bb-a-so-230-0.inet.ntl.com [62.253.188.233]
5 11 ms 30 ms 11 ms gfd-bb-b-ae0-0.inet.ntl.com [213.105.172.6]
6 12 ms 10 ms 11 ms tele-ic-2-so-100-0.inet.ntl.com [62.253.185.74]
7 13 ms 12 ms 36 ms 212.58.239.217
8 39 ms 13 ms 12 ms 212.58.226.30
Trace complete.
C:\Documents and Settings\Tony>tracert news.bbc.co.uk
Tracing route to newswww.bbc.net.uk [212.58.226.30]
over a maximum of 30 hops:
1 9 ms 11 ms 9 ms 10.64.2xx.1
2 38 ms 30 ms 18 ms brtn-t2cam1-a-ge95.inet.ntl.com [80.3.66.13]
C:\Documents and Settings\Tony>tracert news.bbc.co.uk
Tracing route to newswww.bbc.net.uk [212.58.226.30]
over a maximum of 30 hops:
1 9 ms 9 ms 11 ms 10.64.2xx.1
2 10 ms 8 ms 10 ms brtn-t2cam1-a-ge95.inet.ntl.com [80.3.66.13]
YMMV but HTH,
Good Luck together with the ubiquitous festive greetings - TW