Re: Subnetting/Routing

From: Holger Petersen (hp_at_kbbs.org)
Date: 05/14/05 

Date: Sat, 14 May 2005 13:30:49 +0000 (UTC)

"Wolf" <wolfdotcom@hotmail.com> writes:

>You have not been doing your homework. Have you actually tried to get 253
>netmask using "the bits?" You can't get there.

Yeou can[*].

>CIDR Prefix from left to right.
 ^^^^ ^^^^^^
 1 2

1) => Classless Inter-Domain Routing
   It's not primary about 'continuos Bits'

2) Of course you asume _continuos_ bits when using "/prefix"-Notation...

>Discontiguous networks are ugly

May be.

> and a sign you did not do your work right.

Why?

>That can not be fixed with a netmask real or imaginary. It will require a
>router and a protocol that understands classless routing-that leaves RIPv1
>and IGRP off the list.

Nobody said that 'discontinous Maks' are fun :-)
But nobody _proofed_ that they are *formally* *forbidden*

If you seek for "netmask 255.255.0.255" in groups.google.de, you'll
get a lot ( fourteen :-) of answers.

One of them states, that "an old AIX" might use them.
[ Message-ID: <slrncjc0lu.67r.klausman-un0404@eric.schwarzvogel.de> ]

Greetings, Holger

[*] A "Zungenbrecher" from my old english-textbook:

       a canner can can
       everything he can can
       but can a canner can a can?