Troubleshooting IGMP Joins

As discussed in Chapter 12, "Understanding Protocol Independent Multicast (PIM)," IGMP joins are a line of communication between the multicast receiver (host) and the router. IGMP joins are used by the multicast receiver to inform the multicast router that hosts on the local segment are interested in certain multicast groups; this allows the router to forward multicast packet to the segment. This section discusses issues with IGMP joins. Refer to Figure 13-1 for the troubleshooting flowchart on IGMP join issues.

Figure 13-1. Troubleshooting Flowchart on IGMP Join Problems

Figure 13-1. Troubleshooting Flowchart on IGMP Join Problems

Neighbor Joins

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