I'm puzzled on solution to this task :
Configure R3 as stub router with Sw1 emulating host.
Okay, to configure stub i'm heading over to DOCCD here and read example on Example Implementing Multicast Stub Routing - PIM-DM
Example is pretty vague but i'm able to mimic commands over to R3 and set interface to passive and set ip igmp helper-address 150.1.37.7
Then I realize i completely got everything wrong and solution actually using helper-address of R5 !!!
In addition to that we configure deny R3 on R5! then deny all on SW1 and set neihbor-filter on f0/3.
OMG can someone please explain what is going on in this task ?
Multicast task such as this one and 8.24 taking toll on me :)