Refer to the following sections to configure and use these features:
• 9-1: Multicast Addressing: Describes multicast flows and multicast addressing in relation to networking devices
• 9-2: IGMP Snooping: Explains how to configure a switch to constrain multicast traffic by listening to Internet Group Management Protocol (IGMP) messages
9-1: Multicast Addressing
Multicasts are directed flows in the network. Application servers send packets and messages to addresses that must be forwarded by network devices and then picked up by the appropriate end devices. The network devices choose which links to forward based on these addresses. The devices track flows from the servers. The list that follows summarizes the characteristics ...