Re: OSPF Backbone Area Clarification

From: Narbik Kocharians <narbikk_at_gmail.com>
Date: Tue, 27 Mar 2012 08:30:39 -0700

Just imagine, what if he did give us that option.....now the question would
be "Why would he do that? when would you change the BB's identifier from
0.0.0.0 to something else?" so you see no matter what you design these
questions will always be there.
I guess one morning after a rough night he woke up and he said "The hell
with it, i am going to go with 0.0.0.0".

On Tue, Mar 27, 2012 at 5:53 AM, ron wilkerson <ron.wilkerson_at_gmail.com>wrote:

> Per the OSPF RFC.
> Technically, I presume the folks writing the RFC could've also made it the
> highest possible value if they wanted to for the backbone area ID.
> But it is easier to type a zero.
>
> Interesting question.
> Ron
>
> On Tue, Mar 27, 2012 at 6:51 AM, Carlos G Mendioroz <tron_at_huapi.ba.ar
> >wrote:
>
> > Believe it or not, people that design solutions try to make it as easy as
> > possible. Given that you will always have only one backbone, it's easier
> to
> > have it fixed than to have yet another parameter to configure.
> >
> > On a more conceptual side, design decisions are made in a context that is
> > not always readily available, so even though it's nice to know why
> > something is done one way or the other, sometimes the answer is just
> > "because someone decided to do it so".
> >
> > Moy could have thought: hey, if someone starts with area 1.1.1.1 and then
> > joins area 2.2.2.2, he might want to pick which one to become
> > backbone. It seems he did not.
> >
> > -Carlos
> >
> > marc edwards @ 27/03/2012 07:30 -0300 dixit:
> >
> >> Nope
> >>
> >> On Tuesday, March 27, 2012, Saravanan Ponnaiah<
> >> saravanan.ponnaiah8_at_gmail.com> wrote:
> >>
> >> Dear Calin,
> >>>
> >>> They explained as why we need a backbone area 0.
> >>>
> >>> My questions is "It is possible to make non area 0 as backbone in
> OSPF?"
> >>>
> >>> With Regards
> >>>
> >>> P.Saravanan
> >>>
> >>>
> >>>
> >>> On Tue, Mar 27, 2012 at 3:03 PM, Calin Chiorean<calin_at_engineer.com>
> >>>
> >> wrote:
> >>
> >>>
> >>> Hello,
> >>>>
> >>>> https://supportforums.cisco.**com/thread/2095492<
> https://supportforums.cisco.com/thread/2095492>
> >>>>
> >>>> It's a longer discussion but it has actually an answer to your
> question
> >>>>
> >>> :)
> >>
> >>>
> >>>> Cheers,
> >>>> Calin
> >>>>
> >>>> On 03/27/2012 12:12 PM, Saravanan Ponnaiah wrote:
> >>>>
> >>>>> Dear Experts,
> >>>>>
> >>>>>
> >>>>> I have a stupid doubt, but it's bothering me a bit as i cant get it
> >>>>>
> >>>> right
> >>
> >>> in my head.
> >>>>>
> >>>>>
> >>>>> I know that a OSPF network has a Backbone Area. What i fail to
> >>>>>
> >>>> understand
> >>
> >>> is, why does the backbone Area always have to be Area 0? Why cant it be
> >>>>>
> >>>> any
> >>>>
> >>>>> number between< 0 - 4294967295>?
> >>>>>
> >>>>>
> >>>>> With Regards
> >>>>>
> >>>>>
> >>>>> P.Saravanan
> >>>>>
> >>>>>
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> >>
> >>
> >>
> >>
> >>
> > --
> > Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
> >
> >
> >
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>
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-- 
*Narbik Kocharians
*CCSI#30832, CCIE# 12410 (R&S, SP, Security)
*www.MicronicsTraining.com* <http://www.micronicstraining.com/>
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Received on Tue Mar 27 2012 - 08:30:39 ART

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