[154679] in North American Network Operators' Group
Re: job screening question
daemon@ATHENA.MIT.EDU (Jon Lewis)
Sat Jul 7 21:35:37 2012
Date: Sat, 7 Jul 2012 21:34:59 -0400 (EDT)
From: Jon Lewis <jlewis@lewis.org>
To: valdis.kletnieks@vt.edu
In-Reply-To: <102262.1341710188@turing-police.cc.vt.edu>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Sat, 7 Jul 2012 valdis.kletnieks@vt.edu wrote:
> On Sat, 07 Jul 2012 18:03:43 -0700, Randy said:
>>> "What's the problem with using 255.255.255.247 as a subnet mask if you
>>> want to make a LAN subnet with 12 hosts?"
>>> (5 word answer)
>
> I'm not sure if that's a typo or excessive evil on the part of the questioner. ;)
>
>> My response would be: Discontiguous subnet masks were allowed in the pre-CIDR era.
>
> Yes, but even if it was *legal*, the "subnet doesn't contain 12 addresses" answer applies. ;)
It's just a mask...you can do all sorts of crazy things with netmasks.
The results of using "unusual" ones is not typically predictable or
desireable to those who might accidentally use them.
----------------------------------------------------------------------
Jon Lewis, MCP :) | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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