[AG-TECH] Network and Bridge Questions

[Christoph Willing]

On 12/11/2011, at 8:37 AM, JULIAN CASTRO wrote:

> We are using the AG version 3.3 and the OS is Fedora 10  64 Bits


Julian,

I guess you mean AG 3.2?

Perhaps you have a different bridge issue than the one that was fixed  
a year ago. That problem was due to a change in some distros to  
python2.6. Fedora 10 used python2.5 so your problem must be something  
else. In any case, the latest F10 release,  
AccessGrid-3.2-4.fc10.noarch.rpm, already contains the fix.

Sorry - that doesn't actually help you - unless some of your  
VenueClient machines are using different versions?


chris


>
> JULIAN CASTRO MAYORGA
> ING. SISTEMAS DECIMO SEMESTRE
> UNIVERSIDAD DISTRITAL "FRANCISCO JOSE DE CALDAS"
> 3143127384
>
>
> > From: c.willing at uq.edu.au
> > To: ag-tech at lists.mcs.anl.gov
> > Date: Sat, 12 Nov 2011 07:01:25 +1000
> > Subject: Re: [AG-TECH] Network and Bridge Questions
> >
> > Julian,
> >
> >
> > The disappearing bridges was fixed about a year ago. What AG version
> > are you using and what platform (OS, distribution)?
> >
> > chris
> >
> >
> > On 12/11/2011, at 2:11 AM, Nikkos Svoboda wrote:
> >
> > >
> > > I believe that the best setup is to give each computer a public  
> IP.
> > > Though the node comprising multiple computers appears as one
> > > participant
> > > in the venue, the data streams coming from each computer are sent
> > > independently. Similarly, the computer in the node that is given  
> the
> > > 'video consumer' service will be the computer receiving the data
> > > streams. The data is not funneled through the controlling  
> computer.
> > > There are probably network setups that avoid public IPs for each
> > > computer, like iptable rules on a router or other NAT solutions,  
> but I
> > > think these will be difficult to setup and maintain.
> > >
> > > The disappearing bridge problem has been around for awhile. I  
> don't
> > > believe there is a solution currently.
> > >
> > > -Nikkos Svoboda
> > > LSU Department of Mathematics
> > >
> > >
> > > On 11/10/2011 9:24 PM, JULIAN CASTRO wrote:
> > >> Hi
> > >> We are students at the Distrital University of Colombia.
> > >> We have a
> > >> node with four servers, each one for video capture, projection,
> > >> audio and
> > >> control. The four servers are in the same network. We have tested
> > >> the node in
> > >> our venue server with our bridge and another clients and it work
> > >> perfect but
> > >> when we use another bridge the clients work but the node does  
> not,
> > >> The clients
> > >> have video and sound form other clients but
> > >> it is not coming in or out video or sound to and from the node.  
> The
> > >> question is: is it necessary that each server (sound, video
> > >> projection, video
> > >> capture and control) have a different public ip so the node works
> > >> in a external bridge? Or
> > >> what are we doing wrong?
> > >>
> > >>
> > >>
> > >> And second,
> > >> we have a problem with our bridge trying to make it appear in the
> > >> list of
> > >> bridges: clients can see the bridge when clicking in “find
> > >> additional bridges”
> > >> but only in the first 5 minutes after starting the bridge in the
> > >> server. After
> > >> that, no client can see the bridge, but if it is in the cache of
> > >> bridges it is
> > >> possible to connect to the bridge and it works. The problem is
> > >> “discovering the
> > >> bridge”. If we copy the cache file with our bridge on it in the
> > >> clients pc´s, they can connect to the bridge but it is not a
> > >> good approach.
> > >>
> > >>
> > >> We
> > >> appreciate the help.
> > >>
> > >> JULIAN CASTRO MAYORGA
> > >> ING. SISTEMAS DECIMO SEMESTRE
> > >> UNIVERSIDAD DISTRITAL "FRANCISCO JOSE DE CALDAS"
> > >> 3143127384
> > >>
> >
> > Christoph Willing +61 7 3365 8316
> > Research Computing Centre
> > University of Queensland
> >
> >
> >

Christoph Willing              +61 7 3365 8316
Research Computing Centre
University of Queensland