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

[Bob Riddle]

where do we stand on the vrvs-ag.internet2.edu stuff?

Kun Wei wrote:

>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]
>>    
>>
>
>  
>