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Standard User jhurrell
(experienced) Tue 27-Jul-10 11:31:34
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Latency - help with locating the problem


[link to this post]
 
I have a client who is on BT Business Broadband (20C). They have a very poor line and are only managing to sync at around 1.5Mbps - however not much we can do about this. Things have been OK, but just recently they have been complaining about very slow browsing, slow response times from websites etc.

A tracert to their static IP address from my internet connection is showing very high latency within, what seems to be, the BT core network:

Tracing route to ***
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms office.router [192.168.0.1]
2 31 ms 29 ms 29 ms telehouse-gw4-lo2.idnet.net [212.69.63.99]
3 30 ms 29 ms 29 ms telehouse-gw3-g0-1-400.idnet.net [212.69.63.243]
4 32 ms 28 ms 30 ms gi8-27.mpd01.lon02.atlas.cogentco.com [149.6.148.205]
5 29 ms 29 ms 29 ms te1-2.ccr01.lon02.atlas.cogentco.com [130.117.50.138]
6 31 ms 29 ms 31 ms te4-3.ccr01.lon01.atlas.cogentco.com [130.117.1.217]
7 33 ms 30 ms 31 ms bt.lon01.atlas.cogentco.com [130.117.14.50]
8 30 ms 29 ms 28 ms t2c1-ge2-0-0.uk-lon1.eu.bt.net [166.49.135.101]
9 30 ms 30 ms 28 ms t2c2-p4-0.uk-ilf.eu.bt.net [166.49.208.1]
10 30 ms 30 ms 30 ms 166-49-168-114.eu.bt.net [166.49.168.114]
11 31 ms 30 ms 30 ms core2-te0-5-0-4.ilford.ukcore.bt.net [194.72.20.249]
12 31 ms 30 ms 30 ms core2-pos7-1.faraday.ukcore.bt.net [62.6.204.82]
13 30 ms 30 ms 31 ms 194.72.4.186
14 * 420 ms * 81.147.49.14
15 395 ms 386 ms 398 ms 213.120.176.177
16 413 ms 424 ms 421 ms 213.120.176.17
17 430 ms 430 ms 412 ms 213.120.177.97
18 404 ms 389 ms 395 ms 213.120.178.132
19 417 ms 427 ms 417 ms ***

Trace complete.

The culprit seems to be 81.147.49.14 which is within the BT network - would my take on this be right?

Interestingly I've been monitoring the line with mon.it.or.us and it is showing this latency is occuring between about 11am and 5pm...This morning I also set up a ping monitor here at Thinkbroadband and it too is starting to show the same problem...

So given the tracert above, is the latency definitely within the BT network?
Thanks
Moderator billford
(moderator) Tue 27-Jul-10 12:21:03
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Re: Latency - help with locating the problem


[re: jhurrell] [link to this post]
 
This matter is already under discussion in the BT forum, and cross-posting is discouraged as it dilutes the help available. See Cross Posting.

Further replies to

http://forums.thinkbroadband.com/bt/t/3881548-high-l...

please.

~~~~~~~~~~~~
Bill

[email protected]
The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.
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