Multicast replication is supported in context of the access connections. By default, multicast streams are replicated in the connection where the corresponding IGMP/MLD join is received; however, this can be overridden to always force a specific connection.
When one connection fails, multicast replication automatically sets up in the alternate connection and does not require a new IGMP/MLD packet to arrive.
MCAC bandwidths must be configured equally on both access connections; otherwise, there may be unexpected drops of (S,G) pairs.
If a multicast stream is forwarded over the primary connection and egress-rate-modify is in use, any potential change of the reference rate is taken into consideration by the load-balancing mechanism for unicast traffic as described in Downstream load balancing. When using per-host replication for a bonded host, similar adaptations are made based on channel definitions in applicable MCAC policies.