How far from the customer premise to the central office or dslam? We've found that the further you push the slower you need to connect in order to keep a stable connection. Never used NAT. On Tue, 5 Sep 2000, Matthew Watkins wrote: > Hi, > > We have something of a problem with some Lucent SDSL equipment right now, > and some suggestions from this list might be helpful in getting the issue > solved. > > We're using a DSL-Max and a DSL-Pipeline over some British Telecom supplied > copper. It's a single-copper pair, running between two locations. We have > set the line speed statically to 272000 at both ends of the link. The next > step up seemed to produce an unstable connection. During testing, "autobaud" > was either taking too long, or did not appear to work at all. > > The problem appears to be poor upstream performance from the pipeline. FTP > downloads hit high speeds, but uploads slow to a crawl. The same is true for > sending mail etc., so it would appear to affect all the traffic on the wire. > > The pipeline originally used RFC1918 addresses on the ethernet interface, > and was running Network address translation. I've not used the pipeline NAT > implementation for anything before, so I wasn't sure if this was the cause. > > I also couldn't gain telnet access to the pipeline when NAT was enabled. I > would have hoped that port 23 would be automatically mapped to the external > numbered interface address, but that does not appear to be the case. Adding > a static mapping so that port 23 points at the pipeline's ethernet interface > address does not provide remote access either. > > I've recently swapped back to using a numbered configuration and have > regained remote access to the pipeline, although the main performance issue > remains. > > The code revision on the Max is: 8.0.3, the pipeline is running 7.10.8. > > Anyone got any ideas before I lose what remains of my sanity? > > Regards, > > - Matt > > -- > > Matthew Watkins > Technical Consultant > Knowware UK Ltd > > Mobile: 07968 755807 > Home Office: +44 (0)1223 300917 > Fax: +44 (0)1223 301280 > Email: matt at knowware.co.uk > http://www.knowware.co.uk > > > > ++ Ascend Users Mailing List ++ > To unsubscribe: send unsubscribe to ascend-users-request at bungi.com > To get FAQ'd: <http://www.nealis.net/ascend/faq> > *********************************************** Mick Dobra Systems Administrator MTCO Communications 1-800-859-6826 ++ Ascend Users Mailing List ++ To unsubscribe: send unsubscribe to ascend-users-request at bungi.com To get FAQ'd: <http://www.nealis.net/ascend/faq>