NCSA/ANL multicast

[Bob Olson]

Stuart Levy at NCSA is watching the AG session on
niri.ncsa.uiuc.edu. He sees the ANL sessions, but we don't see
him. And this looks like why:


(dyfrig) % mtrace -t 127 niri.ncsa.uiuc.edu 224.2.177.155
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  detect.mcs.anl.gov (140.221.11.250)  No route
Round trip time 5 ms; total ttl of 1 required.

Waiting to accumulate statistics... Results after 10 seconds:

  Source        Response Dest    Overall     Packet Statistics For Traffic From
   * * *        224.0.1.32       Packet      141.142.220.60 To 224.2.177.155
     v       __/  rtt    5 ms     Rate       Lost/Sent = Pct  Rate
140.221.11.250  detect.mcs.anl.gov No route
     v      \__   ttl    1   
140.221.9.172   140.221.9.172
  Receiver      Query Source


And the other way:

(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 127 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   24 ms     Rate       Lost/Sent = Pct  Rate
140.221.11.253 
130.202.128.5   destiny.mcs.anl.gov 
     v     ^      ttl    7      1648 pps        0/3    = --%   0 pps
130.202.128.1  
192.5.170.129   bluto-vbns.ctd.anl.gov 
     v     ^      ttl   34       639 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      1424 pps        0/3    = --%   0 pps
204.147.129.245
141.142.11.1    cs-atm0-0-12.ncsa.vbns.net 
     v     ^      ttl   34       665 pps        0/3    = --%   0 pps
141.142.11.2   
141.142.11.150  charlie-atm1-0-7.ncsa.uiuc.edu 
     v     ^      ttl   34       638 pps        1/3    = --%   0 pps
141.142.11.149  pigpen-atm0-10.ncsa.uiuc.edu 
     v      \__   ttl   34        35 pps        ?/2            0 pps
141.142.220.60  140.221.9.172
  Receiver      Query Source