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uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed. |
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![]() OK, here's a weird one, which I cannot understand. We used to have a relatively slow (64K baud) leased line. We now have a much, much faster always on aDSL connection (512K baud outbound, I think 2Mb inbound but frankly the inbound doesn't matter for this). We have two sets of users in different remote offices. One set connects to the internet via a shared modem, the other via a shared aDSL connection. Since we changed to aDSL at the server end, both groups have intermittently reported that just one user in their office (not always the same one) is getting abysmally poor performance from the POP server (a few tens of bytes per minute). Each time this happens, the user can reboot their PC and it still won't help - they continue to get abysmally bad performance, while another user at the next desk using the same shared dialup connection gets good performance. Also since we switched to aDSL, we've had independent reports from different users of Web applications which have been performing well, suddenly, in the middle of a session, starting to perform diabolically badly, and that this can only be fixed by rebooting the /client/. The mail server is running Debian 3.1, and is regularly updated. The POP daemon is qpopper 4.0.5-4sarge1. The primary Web application server is also Debian 3.1, but we have today had a report of exactly the same problem with a legacy server which is still running Red Hat 5.1, because the Web application in question is written in PHP2 and there isn't the budget to port it to anything more modern. None of these servers is heavily loaded; they have plenty of RAM and aren't swapping; they have plenty of disk. I've think I've eliminated anything in /server/ performance as being the cause. So far in all the cases this has been reported the client has been some version of Microsoft Windows. So it /could/ be a Windows networking problem; but I'm more inclined to suspect a network, firewall or aDSL problem, as we had no reports of this sort before we switched from the leased line. The firewall is a 2wire 1800HG. -- (Simon Brooke) http://www.jasmine.org.uk/~simon/ ;; Our modern industrial economy takes a mountain covered with trees, ;; lakes, running streams and transforms it into a mountain of junk, ;; garbage, slime pits, and debris. -- Edward Abbey |
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