Could someone please explain how pim-ssm works in the ASR9K? I've read the MCAST configuration guide but I'm not sure I understand exactly how to configure ssm. I thought we would be able to use dns queries but I can not find anything related to configuring ssm other than creating static mappings for legacy integrations. Most of our HE equipment does not support IGMPv3 so that is not really an option at this point.
