[CentOS] DHCP static hosts and subnet configuration

Ralph Angenendt ra+centos at br-online.de
Fri Oct 17 19:01:09 UTC 2008


John wrote:
> Yeah, but you cannot really subnet that way:
> 
> 
> JohnStanley Writes: 
> 
> So let me understand that your saying that if I am Allocated and Own the IP
> blocks 64.x.x.33 - 64.x.x.35 that I can not Subnet them Out in any way?

Yes, because that up there contains exactly *one* IP address - so I'd hardly 
call that "blocks".

> I have always done that between for inbetween LAN to WAN Back to LAN
> or VPN.  Example, I have my core catalyst router with x.33 Primary
> INT. x.34 subnetted out to my PIX Firewall, Squid Server.Apache and
> etc. Most all in a DMZ certain things. Just trying to figure out what
> you mean.

I have no idea what you are trying to tell me - you cannot "subnet out" one
IP address to "your PIX firewall".

And hadn't you snipped what I wrote, you could have seen that it is impossible
to have 192.168.0.16 with a netmask of 255.255.255.224 with 192.168.0.16 being
the network address, as that IP address with that network mask can only be an
address in an address range from 192.168.0.1 to 192.168.0.30 with .0 being
the network and .31 being the broadcast address.

Ralph
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