No caching. No prioritization except DSCP for VoIP. From: That One Guy Sent: Wednesday, March 04, 2015 10:13 PM To: af@afmug.com Subject: Re: [AFMUG] downloads stalling but streaming, speedtests, etc. OK
youre not caching anything? prioritization? On Wed, Mar 4, 2015 at 10:10 PM, Ken Hohhof <af...@kwisp.com> wrote: I can't figure this out, but it seems like the sort of thing someone else here will say "oh, I know what causes that". I've been tracking a smattering of customer complaints about downloads just stopping, and finally was able to reproduce it. I Googled for large file downloads and took the first one that came up: https://www.futurehosting.com/network-test-files/ and found the downloads would stop repeatedly at the same point. Different for each file and server location, but the same for repeated downloads of the same file. For example the 100MB file from Michigan kept stopping at 8MB. It chugged along fine, then slowed dramatically and stopped, with no traffic either direction. Yet a ping to the same IP address never had a problem. Note it is NOT the computer, the server, or last mile radios. I was able to see it going only through backhaul radios and routers, no AP/CPE. And it works fine with the same computer here at my house on AT&T. Tomorrow I need to chase it back toward my network border. I am not conversant with Wireshark so have not done that yet, am not looking forward to it. One pesky customer claims to have done that and seen TCP retries and out-of-order packets, maybe he's right, maybe he is just misinterpreting the data. So .............. what can cause HTTP downloads to stall and stop, while other stuff like Youtube and Hulu and speedtest.net are fine? -- If you only see yourself as part of the team but you don't see your team as part of yourself you have already failed as part of the team.
