[KLUG Members] multicast

[Bert]

Peter Buxton wrote:

>  
>
>>>It seems to me that it should be 20, giving you addresses from
>>>224.0.0.0 up to 239.255.255.255.
>>>      
>>>
>
>Wrong. See the two examples above. Remember, the netmask works from the
>left (most significant bit) and separates the network bits (the four on
>the left, above) from the host bits (the 28 on the right).
>

Your'e right ofcourse, you need a range of 16 in the highest number (224 
.. 239) so you need a netmask that is allowing that. That means that the 
lowest 4 bits of the first byte need to be moved to the host part.


Bert.