Lecture 2 - IP Multicast Routers and Routing Protocols
This is the second video of a complete lecture series on IP Multicast and its implementation on both IOS and Junos routers with a focus on CCIE and JNCIE candidate requirements.
In this lecture, we discuss the following topics:
- How IP mutlicast routers think about forwarding of IP multicast packets (away from a source vs. towards a destination) and how is it important for the CCIE and JNCIE
- How an IP multicast router builds the multicast forwarding database
- The concept of upstream vs downstream interfaces (IIF vs OIL) in the multicast FIB
- Major responsibilities of a multicast routing protocol such as PIM, DVMRP etc.
- How an IP multicast routing protocol populates the multicast routing table
- How an IP multicast router uses the multicast FIB to forward packets in the data plane
- (S,G) vs. (*,G) in IP multicast
- What is a reverse path forwarding or RPF check
- How an IP multicast router performs the RPF check to control multicast loops
- How an IP multicast router uses the unicast routing table to perform RPF checks on multicast packets