This chapter covers FWSM support for multicast technology. It discusses only the basics of multicast and emphasizes the support of multicast in FWSM. The following are some of the discussion points covered in detail:
• Designs in FWSM to make multicast pass through the firewall
• Features of multicast supported in FWSM
• Configuration examples
Before moving on, you should have a good understanding of multicast technology. For more specific details, you can refer to the book, Developing IP Multicast Networks (ISBN 157870079).
What is multicast? Multicast defines a communication between a single source and multiple receivers through a single stream. In unicast flow, a separate flow is maintained from a source to a destination. ...