NCSA/ANL multicast

Linda Winkler winkler at mcs.anl.gov
Thu Jul 1 19:10:19 CDT 1999


I do not see 
141.142.220.60 in the group table on bluto.
It would be helpful to know what protocols NCSA is using to peer with the vBNS.
lw

At 03:18 PM 7/1/99 -0500, Robert Olson wrote:
>At 03:01 PM 7/1/99 -0500, you wrote:
>>I don't know why detect was even on that list.  I've turned off its
>>multicast SAP listener and now the mtraces look much more sane.
>
>Cool. Traces do look better, but we're still not seeing video from niri. A
>tcpdump shows no traffice at all from niri.
>
>Stuart's getting some odd mtraces, he's going to send them along to ag-tech.
>
>Oddly (perhaps), audio is getting through, with a lot of dropouts. Maybe
>that's the melting router that bill posited, or bandwidth limits in place
>somewhere?
>
>--bob
>
>(dyfrig) % mtrace -t 127 niri.ncsa.uiuc.edu 224.2.177.155 dyfrig
>Mtrace from 141.142.220.60 to 140.221.9.172 via group 224.2.177.155
>Querying full reverse path... * switching to hop-by-hop:
>  0  dyfrig.mcs.anl.gov (140.221.9.172)
> -1  destiny-11.mcs.anl.gov (140.221.11.253)  PIM  thresh^ 6   [default]
> -2  bluto.ctd.anl.gov (130.202.128.1)  Unknown protocol code 8  thresh^ 0
> -3  cs-dng.anchor.anl.gov (192.5.170.130)  Unknown protocol code 8
>thresh^ 0  Reached RP/Core
> -4  * * cs-atm0-0-11.ncsa.vbns.net (204.147.129.245)  PIM/Static  thresh^ 0  
> -5  * * charlie-atm0-5.ncsa.uiuc.edu (141.142.11.2)  PIM  thresh^ 8  
> -6  * * pigpen-atm0-10.ncsa.uiuc.edu (141.142.11.149)  PIM  thresh^ 0  
> -7  niri.ncsa.uiuc.edu (141.142.220.60)
>Round trip time 12 ms; total ttl of 10 required.
>
>Waiting to accumulate statistics... Results after 10 seconds:
>
>  Source        Response Dest    Overall     Packet Statistics For Traffic
>From
>141.142.220.60  140.221.9.172    Packet      141.142.220.60 To 224.2.177.155
>     v       __/  rtt   79 ms     Rate       Lost/Sent = Pct  Rate
>141.142.220.120
>141.142.11.149  pigpen-atm0-10.ncsa.uiuc.edu 
>     v     ^      ttl    1        31 pps        0/47   =  0%   4 pps
>141.142.11.150 
>141.142.11.2    charlie-atm0-5.ncsa.uiuc.edu 
>     v     ^      ttl   10         4 pps        0/47   =  0%   4 pps
>141.142.11.1   
>204.147.129.245 cs-atm0-0-11.ncsa.vbns.net 
>     v     ^      ttl   10         4 pps        0/47   =  0%   4 pps
>204.147.129.246
>192.5.170.130   cs-dng.anchor.anl.gov Reached RP/Core
>     v     ^      ttl   10         0 pps        ?/47           4 pps
>192.5.170.129  
>130.202.128.1   bluto.ctd.anl.gov 
>     v     ^      ttl   10       927 pps        0/0    = --%   0 pps
>130.202.128.5  
>140.221.11.253  destiny-11.mcs.anl.gov 
>     v      \__   ttl   12        16 pps
>140.221.9.172   140.221.9.172
>  Receiver      Query Source
>
>(dyfrig) % mtrace -t 127 dyfrig 224.2.177.155 niri.ncsa.uiuc.edu
>Mtrace from 140.221.9.172 to 141.142.220.60 via group 224.2.177.155
>Querying full reverse path... 
>  0  niri.ncsa.uiuc.edu (141.142.220.60)
> -1  pigpen-atm0-10.ncsa.uiuc.edu (141.142.11.149)  PIM  thresh^ 0   [default]
> -2  charlie-atm1-0-7.ncsa.uiuc.edu (141.142.11.150)  PIM  thresh^ 0  
> -3  cs-atm0-0-12.ncsa.vbns.net (141.142.11.1)  Unknown protocol code 8
>thresh^ 0  
> -4  cs-atm0-0-6.dng.vbns.net (204.147.129.246)  PIM/Static  thresh^ 0
>Reached RP/Core
> -5  bluto-vbns.ctd.anl.gov (192.5.170.129)  PIM  thresh^ 32  
> -6  destiny.mcs.anl.gov (130.202.128.5)  PIM  thresh^ 6  
> -7  dyfrig.mcs.anl.gov (140.221.9.172)
>Round trip time 79 ms; total ttl of 34 required.
>
>Waiting to accumulate statistics... Results after 10 seconds:
>
>  Source        Response Dest    Overall     Packet Statistics For Traffic
>From
>140.221.9.172   224.0.1.32       Packet      140.221.9.172 To 224.2.177.155
>     v       __/  rtt   50 ms     Rate       Lost/Sent = Pct  Rate
>140.221.11.253 
>130.202.128.5   destiny.mcs.anl.gov 
>     v     ^      ttl    7      1461 pps        0/3    = --%   0 pps
>130.202.128.1  
>192.5.170.129   bluto-vbns.ctd.anl.gov Reached RP/Core
>     v     ^      ttl   34       580 pps        0/3    = --%   0 pps
>192.5.170.130  
>204.147.129.246 cs-atm0-0-6.dng.vbns.net Reached RP/Core
>     v     ^      ttl   34      1444 pps        0/3    = --%   0 pps
>204.147.129.245
>141.142.11.1    cs-atm0-0-12.ncsa.vbns.net 
>     v     ^      ttl   34      1156 pps        0/3    = --%   0 pps
>141.142.11.2   
>141.142.11.150  charlie-atm1-0-7.ncsa.uiuc.edu 
>     v     ^      ttl   34      1133 pps        1/3    = --%   0 pps
>141.142.11.149  pigpen-atm0-10.ncsa.uiuc.edu 
>     v      \__   ttl   34        24 pps        ?/2            0 pps
>141.142.220.60  140.221.9.172
>  Receiver      Query Source
>




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