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/P... 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)