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

[Kun Wei]

Hello;

Most likely it caused by some local AG nodes. I can see loopback in
Lobby but not in Test
In Lobby, there are 

ag at 127.0.0.1/ag-www.mcs.anl.gov/mbone/University of Montana/0
ag at 192.12.188.20/ag-www.mcs.anl.gov/mbone/BOSTON UNIVERSITY/0
ag at 144.167.32.102/ag-www.mcs.anl.gov/mbone/UALR VRC/AG/0
agtech at 131.193.77.103/ag-www.mcs.anl.gov/mbone/EVL at UIC/0
ag at 128.210.182.12/ag-www.mcs.anl.gov/mbone/Purdue University/0
ag-operator at 129.93.185.15/ag-www.mcs.anl.gov/mbone/UNL-Cornhuskers/0
root at 137.48.142.1/ag-www.mcs.anl.gov/mbone/root/0
agop at 66.99.215.133/ag-www.mcs.anl.gov/mbone/TRECC/0
gazula at 128.163.209.74/ag-www.mcs.anl.gov/mbone/University of Kentucky/0


look at the first one's IP

Kun



Kun Wei wrote:
> 
> Hello, Bob;
> Are there any multicast setup changes on ag-www.mcs.anl.gov, or it maybe
> caused by some local AG nodes mis-configuration.
> Now if I transmit video, I can see loopback. see the attached snapshot.
> 
> It is not this case before. VRVS AG Gateway worked okay before and there
> is no change related to VRVS on ag-www.mcs.anl.gov.
> 
> Regards
> Kun
> 
> 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
> 
> --
> -----------------------------
>  Kun Wei
>  Email:   weikun at caltech.edu
>  Address: MC 256-48, Caltech
>           Pasadena, CA 91125
>  Phone:   1-626-395-8767
> -----------------------------
> 
>   ------------------------------------------------------------------------
>  [Image]

-- 
-----------------------------
 Kun Wei
 Email:   weikun at caltech.edu
 Address: MC 256-48, Caltech
          Pasadena, CA 91125
 Phone:   1-626-395-8767
-----------------------------