CCNP Interview Question:

Determine at least four IP multicast groups that have the multicast Ethernet address of 01 00 5E 00 40 0C?

Submitted by: Administrator

The low order 32 bits of the IP address determine the multicast Ethernet address. The first four bits are always 1 1 1 0 and the next five bits can be anything. Therefore, the IP multicast addresses that map to the multicast Ethernet address of 01 00 5E 00 40 0C are

1110 0000 0000 0000 0100 0000 1100 = 224.0.64.12

1110 0000 1000 0000 0100 0000 1100 = 224.128.64.12

1110 0001 0000 0000 0100 0000 1100 = 225.0.64.12
Submitted by: Administrator

1110 0001 1000 0000 0100 0000 1100 = 225.128.64.12

1110 0010 0000 0000 0100 0000 1100 = 226.0.64.12

1110 0010 1000 0000 0100 0000 1100 = 226.128.64.12

1110 0011 0000 0000 0100 0000 1100 = 227.0.64.12

1110 0011 1000 0000 0100 0000 1100 = 227.128.64.12

1110 0100 0000 0000 0100 0000 1100 = 228.0.64.12

1110 0100 1000 0000 0100 0000 1100 = 228.128.64.12

1110 0101 0000 0000 0100 0000 1100 = 229.0.64.12

1110 0101 1000 0000 0100 0000 1100 = 229.128.64.12

1110 0110 0000 0000 0100 0000 1100 = 230.0.64.12

1110 0110 1000 0000 0100 0000 1100 = 230.128.64.12

1110 0111 0000 0000 0100 0000 1100 = 231.0.64.12

1110 0111 1000 0000 0100 0000 1100 = 231.128.64.12

1110 1000 0000 0000 0100 0000 1100 = 232.0.64.12

1110 1000 1000 0000 0100 0000 1100 = 232.128.64.12

1110 1001 0000 0000 0100 0000 1100 = 233.0.64.12

1110 1001 1000 0000 0100 0000 1100 = 233.128.64.12

1110 1010 0000 0000 0100 0000 1100 = 234.0.64.12

1110 1010 1000 0000 0100 0000 1100 = 234.128.64.12

1110 1011 0000 0000 0100 0000 1100 = 235.0.64.12

1110 1011 1000 0000 0100 0000 1100 = 235.128.64.12

1110 1100 0000 0000 0100 0000 1100 = 236.0.64.12

1110 1100 1000 0000 0100 0000 1100 = 236.128.64.12

1110 1101 0000 0000 0100 0000 1100 = 237.0.64.12

1110 1101 1000 0000 0100 0000 1100 = 237.128.64.12

1110 1110 0000 0000 0100 0000 1100 = 238.0.64.12

1110 1110 1000 0000 0100 0000 1100 = 238.128.64.12

1110 1111 0000 0000 0100 0000 1100 = 239.0.64.12

1110 1111 1000 0000 0100 0000 1100 = 239.128.64.12
Submitted by: Administrator