Types of Multicast Protocols

• Multicasting protocols are strictly divided into two types

• • Local area (IGMP)
  • Wide area (DVMRP, PIM)
  • • DVMRP: Distance-Vector Multicast Routing Protocol
    • PIM: Protocol Independent Multicast

• Local area multicasting is used for

• • Configuration and service advertisements
  • Management of local and wide area multicast memberships

• Wide area multicasting is used mostly for audio and video distribution

• • The most common protocols are DVMRP and PIM
  • • DVMRP uses IGMP for inter-router messaging
  • Edge routers run both IGMP with wide area protocols
  • • IGMP tables are shared