I am having difficulty understanding what the difference is between these 2 commands. All the docs that I read say that they both allow the router to forward multicast packets but the "join-group" command will actually cause the router to accept the packets. Can anyone help me understand what is meant exactly by "accept" the packets?
I just need to clarify something.
when igmp-join is used, would this be more cpu taxing if testing high volume of multicast. and in which case, should be used with caution.