pim sparse on nbma

From: lee (kinwei@xxxxxxxxxxxx)
Date: Wed Apr 03 2002 - 01:45:19 GMT-3


   
Hi all, first of all, i'm not a multicasting master. i have come up a senario
like below:

r5
|
|
r2(spoke1)
|
|
r1(hub,)---------------r4(spoke3)
|
|
r3(spoke2)

r1 is the frame relay hub for r2,r3,r5. The frame relay interface from r1 to
all the spokes are :

r1(s0.1 multipoint)--------------r2(s0 FR physical) & r3(s0 FR physical)
r1(s0.2 ptp)-----------------------r4(s0 FR physical)

Between r2 & r5 is ethernet connection. Assume that r5 to join group
224.0.5.5, use sparse mode, the RP is r1. I can see the 224.0.5.5 group in r5,
r2 & r1, not r4 & r3. I have tried to put in "ip pim nbma-mode" on r1's s0.1 &
s0.2 interface, but it still not working.

I don't know whether this topology setup is workable. Can someone shed some
light here?

regards,
lee



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