On Mon, 5 Jan 2004, Michael Chesterton wrote:
> Danny Yee <[EMAIL PROTECTED]> writes:
>
> > II've justt set my girrlfriend's ADSL coonnection up, and it appeears
> > to be working finne -- 50ms flat pings to Sydney Uni, andddd 25kb/s
> > downloads. The problemm? Well, my ssh ssessiions keep duplicating
> > characterrrrrrs,, ass yyou caaaan see!!
>
> > Dooeees anyone have aadvice on whhatt coould be causing this?
>
> ii cann't sseee aanny prooblemms wwithh youur messsagee, III thinnk
> soomeeonne muust ooff haddd toooo mmmuch cchriisttmmaass cchheeeeeeer
> :))..
>
> TTrry ccuuutiing bbaack on tthhhe pparrtyying, aaand ssee iif tthhe
> doouuble viission goooes aaway...
I had to laugh at Michael's response but am having trouble fathoming how
this could really happen with SSH.
Some more diagnositics is the only thing I can come up with at the moment.
Try SSHing to various hosts on various networks to see if the problem
persists. Try telnet to various mail hosts on port 25 and see if you get a
similar pattern (ie is it protocol specific). Also for what it's worth try
some larger pings ping -s 1500 will give you an ethernet sized frame, try
maybe 2000 and 500 and let it go for about 20 to 50 pings. Things you'd be
looking for a duplicates & dropped packets - again to various hosts. Maybe
play with the MTU setting, it's sickening but some providers (or upstream
providers even) seem to accidently block MTU path discovery.
Also... what if there's a multi-path route and the packets are going both
ways, one might be delayed sufficiently to not be picked up as a
duplicate... but then again the TCP protocols should take care of this ...
that's what sequence numbers are for.
--
---<GRiP>---
Electronic Hobbyist, Former Arcadia BBS nut, Occasional nudist,
Linux Guru, SLUG/AUUG/Linux Australia member, Sydney Flashmobber,
BMX rider, Walker, Raver & rave music lover, Big kid that refuses
to grow up. I'd make a good family pet, take me home today!
Do people actually read these things?
--
SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/
Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
