UDP multicast client does not see UDP multicast traffic generated by tcpreplay

Question

I have two programs:

• server ... it generates UDP traffic on a chosen multicast
• listener ... it prints UDP traffic on a chosen multicast (it sub

Answer 1

To my knowledge, you can't do this on the same box ,tcpreplay bypasses the host's routing table and sends traffic out the interface.

you have to start your listener on a different box. and make sure multicast is enabled. because by default, switch discards multicast traffic.