Under the context of inter PIM domains multicasting, 1 RP on each PIM domain (2 domains), attached with eBGP, with MSDP peering to exchange the actives sources, what are the benefits of using the MB-BGP multicast address family ?
Cisco mention in some documentation the usage of MP-BGP Multicast in this context (e.g: https://www.cisco.com/c/dam/global/fr_ca/training-events/pdfs/Interdomain_IPMulticast.pdf, slide 21)