Need advice on multicasting?

Question

Cisco

Such a situation - it is necessary to send a multicast to another company, but they have their own RP, how to do this in this case?

sh ip mroute 225.234.234.234
(*, 225.234.234.234), 8w3d/stopped, RP 192.168.202.3, flags: SPF
incoming interface: Vlan202, RPF nbr 192.168.202.3 Outgoing
interface list: Null
(192.168. , 04:19:26/00:02:53, flags: PFT
Incoming interface: Vlan611, RPF nbr 0.0.0.0 Outgoing
interface list: Null

Answer 1

The easiest way is to write a static route to the right place. And what is the tenth thing with them with RP.

Answer 2

MSDP

Answer 3

There are options:
1) do not raise the pim session between R1 and R2, give traffic using ip igmp static group
2) explicitly point to R2 rendezvous for the list of groups. There was some kind of team.
3) Use other routing protocols for the interface (MSDP, MBGP)