Ok, fair enough. I was working on the presumption not so much that it was simpler but more than it provided a logical structure. Having some framework to start with provides a base. True that binary is binary is binary... But rather than just an amorphous collection of x-number of bits, there's some initial rhyme and reason. Explaining that, getting buy in, and understanding the limitations therein will make the next progression to VLSM simpler to grasp. At least in my opinion. :) Scott Joe Abley wrote:
On 2009-10-13, at 08:05, Scott Morris wrote:
While I may agree that teaching classful routing is stupid, the addressing part lets people start getting the concept of binary.
That's true of classless addressing, too. When students have problems with non-octet bit boundaries, that just means you start with mask lengths that are multiples of 8.
While I'd love to think that people coming out of the school system have a grasp of simple mathematical skills, more and more I'm finding that's not the case. I wouldn't spend a LOT of time with it, and I certainly wouldn't LEAVE at classful addressing, but it's a foundational step.
Why is the presumption faulty?
You were suggesting that classful addressing is reasonable to teach because it's simpler. It's not simpler, and in a modern-day context it's just wrong.
Joe