Do I need to have PIM enabled on a local network or is IGMP enough for multicast data delivery. We have the MC source connected to a Layer 2 Cisco switch that has IGMP snooping enabled. The MC receivers are also connected to this switch. Is it possible for each multicast receiver to only subcribe to a specific MC group or do we need to have PIM enabled on this switch? Is IGMP snooping enough?
1) your source and receivers are in different vlans so you need to route the multicast traffic
2) Something must makes IGMP queries for the IGMP snooping function to listen to the answers ie. IGMP snooping is a passive function, it can only listen to answers rather than send out the query itself.
However some switches have a function called the "IGMP snooping querier" where they can send out IGMP queries so IGMP snooping can listen to the answers.
If your switch has this function you do not need PIM on the vlan interface. If it doesn't you do.
We are pleased to announce availability of Beta software for 16.6.3.
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Introduction Featured Speakers Luis Espejel is the Telecommunications
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In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...