The switch treats multicast data packets with a time-to-live (TTL) of 1 as expired packets and sends them to the CPU before dropping them. To avoid this issue, ensure that the originating application uses a hop count large enough to enable the multicast stream to traverse the network and reach all destinations without reaching a TTL of 1. Ensure that you use a TTL value of 33 or 34 to minimize the effect of looping in an unstable network.