VLSM & subnet zero question

kadshah

Does Cisco consider subnet-zero valid on their exams? I read that it doesn't. Will there be any question related to VLSM?

-k

nuglobe

Unless they ask for you to include subnet zero dont. VLSM yes, I have hear there is.

kadshah

thanks

skaeight

Lammle doesn't specifically address whether or not you should assume the use of subnet zero, however it does say that 'ip subnet-zero' is enabled by default on IOS 12.x +. Does this have any bearing on the exam?

Humper

Dont see why this is so taunting to people...There is nothing to it... 2^n-2 !!!!!!

nuglobe

The two books I read said that Cisco doesn't suggest using subnet zero because of possible confusion, thus it won't be used on the CCNA. Perhaps someone else can way in.

nuglobe

ModemHumper wrote:

Dont see why this is so taunting to people...There is nothing to it... 2^n-2 !!!!!!

Its not difficult! Its that if you assume one way or the other your answer will be wrong by -+1. That would be stupid to get the problem wrong because of something like that.

EdTheLad

nuglobe wrote:

Unless they ask for you to include subnet zero dont.

Correct, Im sure if you search subnet-zero you'll find countless discussions all resulting in the above answer.So please no more...