I have 2 couples of Nexus 5548 connected to 2 Nexus 7010 core switches as you can see on attached network layout.
Multicast source and multicast receiver are assigned to the same VLAN. This VLAN is only Layer 2 on Nexus 7010.
If I connect multicast source and receiver on two different ports on the same FEX, the receiver is able to join multicast group and get multicast traffic.
If I connect the source on FEX 111 and the receiver on FEX 121, the receiver cannot get multicast traffic. The only way to have the receiver getting multicast traffic is to configure SVI on Nexus 7010 and activate PIM on it.
Why I need to configure PIM if source and receiver are in the same VLAN?
How can I avoid this Layer 3 configuration on Nexus 7010?