A provider may want to block receive or transmit permission to individual hosts or a range of hosts. To this end, the 7450 ESS and 7750 SR support IGMP/MLD filtering. Two types of filter can be defined:
Filter IGMP/MLD membership reports from a host or range of hosts. This is performed by importing an appropriately defined routing policy into the SAP or spoke SDP.
Filter to prevent a host from transmitting multicast streams into the network. The operator can define a data-plane filter (ACL) which drops all multicast traffic, and apply this filter to a SAP or spoke SDP.