Multicast load splitting across equal-cost paths
You can, however, configure multicast so that it dynamically takes advantage of multiple equal-cost paths using what is known as IP Multicast Load Splitting across Equal-Cost paths.
There are two methods to employ this:
- Enable ECMP multicast load splitting based on source address, source and group address, or based on source, group, and next-hop address. After the equal-cost paths are recognized, ECMP multicast load splitting operates on a per (S, G) basis, rather than a per-packet basis as in unicast traffic.
- Consolidate two or more equal-cost paths into a GRE tunnel and allow unicast routing to perform the load balancing.