Issue:
Network camera is configured with a proper multicast IP address and the device IP can be pinged but it cannot be displayed or recorded by NVR's or VMS
Cause:
TTL Value is too low
TTL Is a mechanism that limits the lifetime of data in a network, if packets are not delivered to their destination in a reasonable amount of time packets should be discarded. TTL prevents a data packet to circulate indefinitely.
Solution:
Increase TTL value in between the Multicast options