Multicast Addressing

• SSM - draft-ietf-ssm-arch-*.txt (almeroth)

  • 232/8 – IANA assigned
  • One-to-many ONLY (no shared trees)
  • Guaranties ONE source on any delivery tree
    • Content security (no ‘Captain Midnight’)
  • Reduced protocol dependance – more later..
  • Solves address allocation issues for interdomain one-to many
    • ~tree address is 64 bits – S,G
  • Host must learn of source address out-of-band (web page)
  • Requires host-to-router source AND group request
    • IGMPv3 include-source list
  • Hard-coded behavior in 232/8 (JunOS & IOS)
    • draft-ietf-mboned-ssm232-01.txt
    • Configurable to expand range

Notes: