Re: Ways to remember private address range ....

From: Craig Tompkins (sidalo@gmail.com)
Date: Sat Jan 10 2009 - 23:49:00 ARST

Dinesh,

Try to think of it this way and see if it helps to memorize it.

/8
/12
/16

10.0.0.0 network is /8
then +4
172.16.0.0 network is /12
then +4
192.168.0.0 network is /16

It is +4 going from one to the next. If you can remember the initial
numbers and the masks are +4 bits then you find it easier to remember. 

---
Craig Tompkins
CCIE #16921

On Sat, Jan 10, 2009 at 12:57 PM, Dinesh Patel <jedidinesh@googlemail.com>wrote:

> Many Thanks, It's not that I don't want to memorise the values .........
> it's more becauase I just can't! The link is
>
> http://cisco.com/en/US/docs/security/asa/asa81/config/guide/ports.html
>
> DP
>
> On Sat, Jan 10, 2009 at 7:38 PM, Anthony Sequeira <
> asequeira@internetworkexpert.com> wrote:
>
> > Check out the Security section of this document - it has RFC 1918 for
> you.
> >
> > I made it a goal to memorize as little as possible to pass the lab. I
> > dislike having to memorize anything I can look up.
> >
> > http://blog.internetworkexpert.com/2008/12/08/doc-cd/
> >
> > Anthony J. Sequeira, CCIE #15626, CCSI #23251
> > Senior CCIE Instructor
> >
> > asequeira@internetworkexpert.com
> >
> > Internetwork Expert, Inc.
> > http://www.InternetworkExpert.com
> > Toll Free: 877-224-8987
> > Outside US: 775-826-4344
> >
> >
> > On Jan 10, 2009, at 2:30 PM, Dinesh Patel wrote:
> >
> >  Hi All,
> >>
> >> I've got a mental block remembering ip addresses and ranges..... so does
> >> anyone know how to find out the rfc 1918 private address range.... is it
> >> in
> >> the doc cd by any chance or am I missing some hidden trick here?
> >>
> >> DP
> >>
> >>
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