- A lot of broadcast traffic
- Must wait for ARP cache to time out in the event of failure
- No control over which router is primary and secondary
Initial, Learn, Listen, Speak, Standby and Active
This will allow hosts to use the Internet Control Message Protocol (ICMP) to find a new path when the primary router becomes unavailable.
Source trees: Source trees use the architecture of the source of the multicast traffic as the root of the tree.
Shared trees Shared trees use an architecture in which multiple sources share a common rendezvous point. Each of these methods is effective and allows sourced multicast data to reach an arbitrary number of recipients of the multicast group.
Data encapsulation is the process by which the information in a protocol is wrapped, or contained, in the data section of another protocol. In the OSI reference model, each layer encapsulates the layer immediately above it as the data flows down the protocol stack.