Bitte keine heisse Asche einwerfen

network or host?

From: Krischan Jodies
To: deleted

On Mon, May 29, 2006 at 01:06:04PM +0200, wrote:
> Hi,
>
> I have a problem and I hope you would help me.
> Is this address a host or a network because I asked many
> people and most of them told me that it is a Host address.
> I still find it hard to believe this.
>
> Here is this address : 172.33.3.255 255.255.254.0
>
> please show me how it is calculated.

Address:   172.33.3.255          10101100.00100001.0000001 1.11111111
Netmask:   255.255.254.0 = 23    11111111.11111111.1111111 0.00000000
Wildcard:  0.0.1.255             00000000.00000000.0000000 1.11111111
=>
Network:   172.33.2.0/23         10101100.00100001.0000001 0.00000000 (Class B)
Broadcast: 172.33.3.255          10101100.00100001.0000001 1.11111111
HostMin:   172.33.2.1            10101100.00100001.0000001 0.00000001
HostMax:   172.33.3.254          10101100.00100001.0000001 1.11111110
Hosts/Net: 510

You need to know, that the network mask splits the bits into a network and a
host part. The rules are: All bits in the host part set: broadcast address. No
bits in the host part set: network address. All others are hosts.

The address in question clearly is a broadcast address. So none of the people you asked were right :-)

You could discuss, that some operating systems define broadcast as the address with all host bits set to zero and vice versa for the network address.

Cheers,

Krischan

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