Server and client are connected to the C6K directly, they are on the same VLAN19.Server send multicast traffic to 224.0.67.67 but the C6K doesn't flood the traffic to client, that means the client can't got the multicast traffic from Server.the same ...

Full story is, when we plug a device to a Giga port, no matter notebook or server, that switch port will work normally if config duplex and speed as auto. (Result is 100MB/Full) But if we config as:speed 1000duplex full The port will immediately down...