Re: Stupid Question maybe?

["Patrick W. Gilmore" <patrick () ianai net>]

Why do you think the network portion needs to be contiguous?

Well, it does now. But that was not always the case.

https://www.quora.com/Why-is-the-subnet-mask-255-255-255-64-invalid/answer/Patrick-W-Gilmore
https://www.quora.com/Why-is-the-subnet-mask-255-255-255-64-invalid

-- 
TTFN,
patrick

> On Dec 19, 2018, at 09:54, Naslund, Steve <SNaslund () medline com> wrote:
>
> I am wondering how a netmask could be not contiguous when the network portion of the address must be contiguous.  I 
> suppose a bit mask could certainly be anything you want but a netmask specifically identifies the network portion of 
> an address.
>
> Steve
>
> > I seem to remember that before the advent of VLSM and CIDR there was 
> > no requirement for the 1 bits in the netmask to be contiguous with no 
> > intervening 0 bits and there was always someone who tested it out on a 
> > production network just to prove a point (usually only once)