All things related to multicast

[debbie fligor <>]

Well, we finally have both on-campus and off-campus multicast routing  
working without relying on statics (well, we're trying to figure out  
why we're only receiving some members of group 233.4.200.18 and not  
others but it's almost all working!).  There's always something bad  
to go with the good when it comes to multicast it seems....


In the process of checking things out across campus to be sure  
everything was really working correctly now, we found that suddenly  
our routers that don't allow an "override" command on their static RP  
config are seeing the following RPs via BSR:

Group prefix = 224.0.0.0/4      # RPs expected: 8
      # RPs received: 8
      RP 1: 138.47.14.1    priority=0    age=0
      RP 2: 130.126.0.145    priority=0    age=0
      RP 3: 168.223.254.100    priority=0    age=0
      RP 4: 138.47.102.2    priority=0    age=0
      RP 5: 199.77.194.253    priority=1    age=0
      RP 6: 10.10.10.10    priority=1    age=0
      RP 7: 143.215.194.6    priority=1    age=0
      RP 8: 89.107.152.145    priority=1    age=0


now a year and half ago before everything broke with our new  
hardware, we don't think that we were seeing these, but that's a long  
time and a lot of changes beyond us that have happened.  If any of  
these happen to be your RPs, please consider filtering at your border  
to help me out :-)

On our exit 6500 (running 12.2(18)SXF9) I added the following  
(straight from Lab 4 in the IPv4 multicast class) but it doesn't seem  
to be helping:


ip access-list standard multicast-boundary
deny   224.0.1.39
deny   224.0.1.40
permit any


and then on all router interfaces towards multicast peers did the  
following:

interface g2/2
ip pim bsr-border
ip multicast boundary multicast-boundary



I don't think I missed any interfaces, I've checked it over a couple  
of times.  Can anyone think of anything else to suggest or point out  
that I missed?


-----
-debbie
Debbie Fligor, n9dn       Network Engineer, CITES, Univ. of Il
email: 

          <http://www.uiuc.edu/ph/www/fligor>
                   "My turn."  -River