Jumbo frames are supported in a multicast configuration as long as all adapter cards in the multicast group support jumbo frames. If an adapter card that does not support jumbo frames is present in the multicast group, the replicated multicast jumbo frame packet will be discarded by the fabric because of an MRU error of the fabric port (Rx).
The multicast group replicates the jumbo frame for all adapter cards, regardless of whether they support jumbo frames, only when forwarding the packet through the fabric. The replicated jumbo frame packet is discarded on adapter cards that do not support jumbo frames.