[Server-devel] Serving 400+ students w/ a single central XS - ejabberd nightmare?

Bryan Berry bryan at olenepal.org
Tue Mar 10 06:12:19 EDT 2009


On Mon, 2009-03-09 at 21:51 -0700, Sameer Verma wrote:
> On Mon, Mar 9, 2009 at 7:04 PM, Bryan Berry <bryan at olenepal.org> wrote:
> > On Tue, 2009-03-10 at 09:58 +1300, Martin Langhoff wrote:
> >> On Mon, Mar 9, 2009 at 12:11 AM, Bryan Berry <bryan at olenepal.org> wrote:
> >> > I am worried about the XO's and not the XS.
> >>
> >> Now you're starting to see what I've seen :-/ I also worry about your
> >> APs and networking infra -- to support 400 active users you'll want at
> >> least 8 APs. In more realistic terms, you'll probably need 12,
> >> assuming a reasonably balanced load.
> >
> > We will have roughly 8+ AP's. We have found that off-the-shelf AP's can
> > handle around 60-70 users.  But that doesn't still doesn't solve the
> > problem of the XO's getting bogged down by tons of ejabberd chatter.
> >
> > DSD: do you have any ideas about this?
> >
> > We are looking at about 100-150 students per school and connecting 3-4
> > schools to a central XS.
> >
> >> As I mentioned before... I am working on xs-0.6, with the
> >> moodle-ejabberd magic.
> >
> > That's great, but our pilot starts in a month but that doesn't fit our
> > timeline. I don't want to send out a completely new, untested XS into
> > rural parts of Nepal.
> >
> > Do you have any other suggestions fo us?
> >
> 
> What if you had a small footprint box (like a soekris or routerboard)
> at the school that talks to APs on one end via a switch, and does
> tunneling back to XS in a central location? That way you would have a
> fairly dumb tunnel unit at school (literally plug-and-play) and XS
> management back at your central shop.
> 
> Sameer

Thanks for the suggestion Sameer.

I don't really understand what benifits the soekris or routerboard adds
in this situation? Can u pls explain further?


-- 
Bryan W. Berry
Technology Director
OLE Nepal, http://www.olenepal.org



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