All things related to multicast

["Lucy E. Lynch" <>]

James -

I am pursuing this, but its not clear that the fix will be to SDR/XMIM.
It may be the case that packet fragmentation is still enough of an
issue for sap that message size will need to scale to the IETF "should"
in all cases - if in fact sap is still perceived to be a useful service
(also not clear).

Alternative means of publishing announcements are currently under
discussion on wg-multicast. No one has as yet stepped up to say what
should be done about the fragile nature of tools which conform to the RFC
(which may mean that standard tools just die a quiet death and we get
on with SSM style deployment).

Lucy E. Lynch                           Academic User Services
Computing Center                        University of Oregon

                (541) 346-1774/Cell: 912-7998

On Wed, 15 May 2002, James O. Whitlock wrote:

> Sorry, Lucy.  I had not thought to reset TTL for future events.
> Let me know if you still see it now.  I'll hold it aside pending
> news of work arounds or fixes.  Re working groups, I've got more
> than I can handle effectively now and would prefer not.  Cc's
> should handle this fine but if not, let me know.  Am I correct in
> assuming that someone will be driving this towards a fix for SDR &
> XMIM?  -- Jim
>
>
> ----- Original Message -----
> From: "Lucy E. Lynch" 
> <>
> To: 
> <>
> Cc: 
> <>;
>  
> <>
> Sent: Wednesday, May 15, 2002 12:23 PM
> Subject: Re: USA WNY-HPNVI 24/7 Live Surgery at 1330 EST (fwd)
>
>
> > FYI - another data point.
> >
> > and I'm still seeing your long SAP announcement and it still crashes
> > both SDR 2.8 & XMIM (the date range seems to be set to some future
> > date but the announcement still shows up).
> >
> > Can you join the internet2 multicast working group list?
> > register here: http://archives.internet2.edu/ and then join
> > wg-multicast. Thanks -
> >
> > Lucy E. Lynch Academic User Services
> > Computing Center University of Oregon
> > 
> >  (541) 346-1774/Cell: 912-7998
> >
> > ---------- Forwarded message ----------
> > Date: Wed, 15 May 2002 11:55:22 -0300 (BRT)
> > From: Adenilson Raniery Sarges Pontes 
> > <>
> > To: Lucy E. Lynch 
> > <>
> > Subject: Re: USA  WNY-HPNVI 24/7 Live Surgery at 1330 EST
> >
> >
> > On Fri, 10 May 2002, Lucy E. Lynch wrote:
> >
> > > James -
> > >
> > > I'm using both SDR v2.8 and xmim (see:http://videolab.uoregon.edu/mim/)
> > > to try and gather sap announcements on a linux box (redhat 7.1) -
> > > XMIM will collect announcements for a while and then seg faults -
> > > while sdr manages to collect announcements and stay up - but if I
> > > exit and then re-start it dumps core.
> > >
> > > Can anyone else duplicate my result?
> >
> > Maybe it's a little bit late to answer, but yes we've found the same
> > behaviour here in RNP/Brazil.
> >
> > I've been using SDR 2.9 on FreeBSD 4.5 and SDR always dies when started
> > with the Buffalo session announcement in the cache dir (2081 bytes). When
> > I delete this announcement, SDR runs OK.
> >
> > (I've only found that out after reading your e-mail.  Of course I was
> > expecting something wrong in my own computer before guessing problems with
> > the announcements. ;)
> >
> > Hope it helps.
> >
> > Regards
> >
> > Raniery
> >
> >
> >
> > Adenilson Raniery Sarges Pontes
> > ---------------------------------
> > 
> > NOC/RNP
> > Brazilian National Research Network (RNP)
> > http://www.rnp.br/index_en.html
>
>