I've taught both. If you try to teach it in Decimal, Hex, or Octal,
you're right, it's hard
to teach CIDR and easy to teach classful.
If you teach it in binary, I have found that not to be an issue. Once
you teach it in binary,
it's fairly easy to move on to showing how octal and hex are just
different representations
of binary. Then you show dotted decimal as a really old-fashioned way
of representing
groups of 8 bits.
I've had no trouble teaching it this way, even to people who knew
nothing about technology.
Owen
On Oct 16, 2009, at 1:51 PM, Daniel Golding wrote:
The big problem here is that CIDR is tough to teach, even to
engineering students. This seems bizarre and counterintuitive, but
its true. I know this because I've done it. Its really easy to teach
classful addressing, on the other hand. Other problems include the
issue that many of the folks teaching have never had to use CIDR in
real life, textbook age, and, in some cases, lack of mathematical
preparation and inclination on the part of students.
Scarier: I was teaching graduate students.
- Dan
On Oct 13, 2009, at 7:53 AM, Joe Abley wrote:
On 2009-10-13, at 07:39, Scott Morris wrote:
No idea, I haven't looked at that stuff in a while. But I would
assume
so, as it's easier to build a foundation than jumping straight to
something difficult?
I've found RIP to be a reasonable way to teach the concept of a
routing protocol, since the protocol is very simple and you can
always close with "don't ever use this".
But teaching classful routing and addressing is just moronic. It's
a foundation that nothing is built on any more, and makes no sense
to teach outside of a history class.
Or did you learn calculus in grade school? Just askin' ;)
Yes, since you asked, but your presumption is faulty.
Joe
