Multicast to NCSA

[Linda Winkler]

Unfortunately, mtrace on ciscos is broken.   known problem for a while.
no fix in site.
lw
At 08:26 AM 7/12/99 -0700, Robert Olson wrote:
>Here are mtraces to/from farmer.ncsa.uiuc.edu (the machine Tony Rimovsky is
>running vic on):
>
>Could it be the case that the latter form of mtraces aren't showing a
>problem in the network, rather a problem in how mtrace works?
>
>--bob
>
>(dyfrig) % mtrace -t 127 141.142.21.149 dyfrig 224.2.177.155
>Mtrace from 141.142.21.149 to 140.221.9.172 via group 224.2.177.155
>Querying full reverse path... 
>  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  linus-atm0-15.ncsa.uiuc.edu (141.142.11.137)  PIM  thresh^ 0  
> -7  farmer.ncsa.uiuc.edu (141.142.21.149)
>Round trip time 309 ms; total ttl of 10 required.
>
>Waiting to accumulate statistics... Results after 9 seconds:
>
>  Source        Response Dest    Overall     Packet Statistics For Traffic
>From
>141.142.21.149  224.0.1.32       Packet      141.142.21.149 To 224.2.177.155
>     v       __/  rtt   21 ms     Rate       Lost/Sent = Pct  Rate
>141.142.21.145 
>141.142.11.137  linus-atm0-15.ncsa.uiuc.edu 
>     v     ^      ttl    1         0 pps        0/3    = --%   0 pps
>141.142.11.138 
>141.142.11.2    charlie-atm0-5.ncsa.uiuc.edu 
>     v     ^      ttl   10         1 pps        0/3    = --%   0 pps
>141.142.11.1   
>204.147.129.245 cs-atm0-0-11.ncsa.vbns.net 
>     v     ^      ttl   10         0 pps        0/3    = --%   0 pps
>204.147.129.246
>192.5.170.130   cs-dng.anchor.anl.gov Reached RP/Core
>     v     ^      ttl   10        86 pps        0/3    = --%   0 pps
>192.5.170.129  
>130.202.128.1   bluto.ctd.anl.gov 
>     v     ^      ttl   10       698 pps        0/3    = --%   0 pps
>130.202.128.5  
>140.221.11.253  destiny-11.mcs.anl.gov 
>     v      \__   ttl   12        97 pps        ?/3            0 pps
>140.221.9.172   140.221.9.172
>  Receiver      Query Source
>
>(dyfrig) % mtrace -t 127 dyfrig 141.142.21.149  224.2.177.155
>Mtrace from 140.221.9.172 to 141.142.21.149 via group 224.2.177.155
>Querying full reverse path... * switching to hop-by-hop:
>  0  farmer.ncsa.uiuc.edu (141.142.21.149)
> -1  * * * Timed out receiving responses
>Perhaps receiver 141.142.21.149 is not a member of group 224.2.177.155,
>or no router local to it has a route for source 140.221.9.172,
>or multicast at ttl 127 doesn't reach its last-hop router for that source
>(dyfrig) %