[Fwd: Fwd: RE: [AG-TECH] ddvic error]

[David Collados Polidura]

  Hi Bob,

  I have stopped the VRVS-AG bridge that was running at
vrvs-ag.internet2.edu.  Kun and Philippe will be able to give you more 
details soon. I just stopped it meanwhile in case it was the reason of
your problems.

  Regards,

       David

On Fri, 8 Nov 2002, Bob Riddle wrote:

>   Bob,
> 
> I have no idea what this is at the *.189, but we're looking for this 
> machine and will pull the plug ...
> 
> the *.66 machine, vrvs-ag.internet2.edu is a machine we've made 
> available to VRVS to setup as a backup bridge for the VRVS-AG bridge. 
>  I've copied Philippe (and VRVS support) thinking that perhaps they've 
> begun to configure and deploy that software ... Philippe?
> 
> -------- Original Message --------
> Subject: Fwd: RE: [AG-TECH] ddvic error
> Date: Thu, 07 Nov 2002 15:27:13 -0500
> From: Chris Goosman <goose at internet2.edu>
> To: Bob Riddle <bdr at internet2.edu>
> 
> 
> 
> Did you see this?
> 
> >Delivered-To: goose at internet2.edu
> >Date: Wed, 6 Nov 2002 14:54:18 -0600 (CST)
> >From: Bob Olson 
> >To: s-slocombe at northwestern.edu,
> >         "'Rabarison Monika Klara'" 
> >Cc: darin at ucar.edu, ag-tech at mcs.anl.gov, support at vrvs.org
> >Subject: RE: [AG-TECH] ddvic error
> >X-Spam-Status: No, hits=-3.9 required=5.0 tests=IN_REP_TO,X_NOT_PRESENT 
> >version=2.21
> >X-Spam-Level:
> >Sender: owner-ag-tech at mcs.anl.gov
> >X-Virus-Scanned: by AMaViS 0.3.12pre8
> >
> >Curiouser and curiouser.
> >
> >1036615485.732686 RTCP len=124 from=207.75.164.189:1263
> >  (SR ssrc=0x3dcd9dc4 p=0 count=1 len=12
> >ntp=3245604283.3556234125 ts=135639818 psent=2231590 osent=451735965
> >   (ssrc=3dcd9dc4 fraction=0 lost=0 last_seq=2231590 jit=0 lsr=0 dlsr=0)
> >  )
> >  (SDES p=0 count=1 len=17
> >   (src=0x3dcd9dc4
> >CNAME="bdr at 207.75.164.189" TOOL="vic-2.8ucl-1.1.3-AG/Windows
> >NT-5.1-intel" )
> >  )
> >
> >followed by
> >
> >1036615485.800790 RTCP len=124 from=207.75.164.66:42003
> >  (SR ssrc=0x3dcd9dc4 p=0 count=1 len=12
> >ntp=3245604283.3556234125 ts=135639818 psent=2231590 osent=451735965
> >   (ssrc=3dcd9dc4 fraction=0 lost=0 last_seq=2231590 jit=0 lsr=0 dlsr=0)
> >  )
> >  (SDES p=0 count=1 len=17
> >   (src=0x3dcd9dc4
> >CNAME="bdr at 207.75.164.189" TOOL="vic-2.8ucl-1.1.3-AG/Windows
> >NT-5.1-intel" )
> >  )
> >
> >that appears to be the same packet coming from two different IP
> >addresses. What's running on 207.75.164.66, aka vrvs-ag.internet2.edu? Is
> >it looping multicast traffic back to the group?
> >
> >Sure looks like it is. Started up another here at ANL, rtpdump shows this:
> >
> >1036615929.725220 RTP len=629 from=140.221.9.223:33899 v=2 p=0 x=0 cc=0
> >m=1 pt=31 (H261,0,90000) seq=1655 ts=1954856438 ssrc=0x3dd8a696
> >1036615929.847436 RTP len=629 from=207.75.164.66:42002 v=2 p=0 x=0 cc=0
> >m=1 pt=31 (H261,0,90000) seq=1655 ts=1954856438 ssrc=0x3dd8a696
> >
> >Whoever's running this bridge, please make it stop. I've verified that
> >quitting one of these sources that's getting reflected causes vic to
> >crash. (The reflector is causing invalid RTP to be present on the wire -
> >multiple sources with one SSRC).
> >
> >  --bob
> 
> Chris Goosman * Internet2 * Applications Technician
> goose at internet2.edu http://www.internet2.edu
> V:734-352-4991
> C:734-645-6186
> F:734-913-4255

---------------------------------------------------------------------------
 DAVID COLLADOS POLIDURA                     Email: David.Collados at cern.ch
 Address: CERN - IT/IS, CH-1211 Geneve 23, Switzerland.
 URL: http://www.vrvs.org/                   Phone: +41 22 767 8464