Multicast Router (mrouter)
Definition - What does Multicast Router (mrouter) mean?
A multicast router is also called an mrouter.
Techopedia explains Multicast Router (mrouter)
The data packets are passed to other multicast routers using the unicast routers as pathways or conduits. This process is called IP tunneling.
There are two protocols involved in multicast routing: dense-mode routing and sparse-mode routing. These protocols are used in distributing multicast packets. The protocol to be used depends on the available bandwidth and the different distributions of end-users across the network.
Dense-mode routing is used when there is a large number of end-users and the bandwidth is enough to cater them. Meanwhile, sparse-mode routing is used when there is limited bandwidth and end-users are thinly distributed.