All things related to multicast

[Pekka Savola <>]

On Fri, 21 Sep 2007, Yuri Kolomiyets wrote:
> *Mar  4 00:21:49.849: PIM(0): Prune-list: (10.0.3.2/32, 239.255.100.100) 
> RPT-bit set
> *Mar  4 00:21:49.849: PIM(0): Prune GigabitEthernet1/0/24/239.255.100.100 
> from (10.0.3.2/32, 239.255.100.100) - deleted
..
> *Mar  4 00:21:50.848: PIM(0): Received v2 Join/Prune on GigabitEthernet1/0/24 
> from 10.0.0.2, to us
> *Mar  4 00:21:50.848: PIM(0): Join-list: (10.0.3.2/32, 239.255.100.100), 
> S-bit set

This might be a clue.

HP is sending the Cisco an (S,G, rpt) prune i.e. "I don't want that to 
receive back from RP the transmission from sources that we already see 
directly" -- and Cisco as a consequence deletes the state.

The next PIM join however has S-bit (shortest path tree set).

Does the Cisco have (S,G,spt) state active towards HP when HP sends the 
prune?  What about the HP (I'm not sure if it's possible to get this much 
detail from it though)?  If not, maybe HP sending the RPT-prune and 
SPT-join in a wrong order, i.e., it should send the SPT join first.

HTH.
Pekka Savola
CSC/FUNET