ISP customer assignments

Fri Oct 16 21:02:13 UTC 2009

I've got to agree with Brian, especially in an ISP environment, why 
would anyone hire or keep someone who couldn't grasp the concept of 
CIDR?  You certainly wouldn't want to have them maintaining a core 
router with lots of v4 routes, since router-router links are almost 
always numbered in subnets as small as logic dictates.

On 10/16/2009 01:58 PM, Brian Johnson wrote:
> I actually think that CIDR is easier to understand than classful
> addressing. Do the subject completely in binary. It makes complete sense
> then.
>
> - Brian
>
> BTW: If the grad students don't get it, fail them! I don't want an
> engineer who can't grasp basic binary math.
>
>
>    
>> -----Original Message-----
>> From: Daniel Golding [mailto:dgolding at t1r.com]
>> Sent: Friday, October 16, 2009 3:51 PM
>> To: Joe Abley
>> Cc: NANOG
>> Subject: Re: ISP customer assignments
>>
>>
>> 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
>>
>>      
>    

-- 

Walter Keen
Network Technician
Rainier Connect
(o) 360-832-4024
(c) 253-302-0194