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 <[email protected]> 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)
