Re: OSPF : LSA

Hi Narbik,

Thanks a lot for sharing this VoD . It helped a lot ...

Carlos :

It's exactly happening same way ..

In above topology if we have static route for X.X.X.X/32 on A2, its type -3
LSA is removed from Area 12 .. ( from Area 0 to other Area)

however in second scenario if we have route on R3 (From other Area to Area 0
), LSA -3 for X.X.X.X remains intact.

Thanks,
CCIE R&S

On Sun, Sep 26, 2010 at 2:14 AM, Carlos G Mendioroz <tron_at_huapi.ba.ar>wrote:

> Wow, nice to know.
>
> You state that <area 0> to <other area> route propagation is done via
> redistribution, and so the route has to be in the RIB "owned by" OSPF to
> be inserted in some non 0 area.
>
> The other way around, from <other area> to <area 0>, follows some
> internal mechanism so it's RIB independant.
>
> Thanks,
> -Carlos
>
> Narbik Kocharians @ 25/09/2010 12:58 -0300 dixit:
> > Your question is NOT basic at all, actually it s pretty advanced, because
> I
> > have NOT seen it in any Cisco Press Workbook, or any workbook for that
> > matter, but I have this scenario plus more in my NEW Boot Camp 2.0
> > Workbook.
> >
> >
> >
> > Please download this VoD and watch it, it's ONLY 10 - 15 minutes. I have
> > explained it purely from behaviors perspective.
> >
> >
> >
> >
> http://www.micronicstraining.com/classes/index.php?dispatch=products.view&pro
> > duct_id=29815
> >
> >
> >
> > BTW, you don t need to login or register and it s totally FREE.
> >
> >
> > On Sat, Sep 25, 2010 at 7:57 AM, kamal negi <kamalnegi.81_at_gmail.com>
> wrote:
> >
> >> Experts, I have below OSPF topology :
> >>
> >>
> >> A1 -----A2--------------A3------A4
> >>
> >> A1 and A2 (Area 12)
> >> A2 and A3 (Area 0 )
> >> A3 and A4 (Area 34)
> >>
> >> ABR : A2,A3
> >> Area 12 , Area 34 are regular area
> >>
> >> A4 is originating prefix X.X.X.X/32 from Area 4.
> >>
> >> On A2 , I have type -3 LSA for X.X.X.X in Area 0 and Area 12
> >> On A 1 , I have type -3 LSA for X.X.X.X in Area 12
> >>
> >> Now If I configure static route for X.X.X.X/32 on A2, Type-3 LSA for
> >> X.X.X.X gets removed from Area 12.. Any particular reason for this
> behavior
> >> ? If we have better route, why it stops this LSA into particular area
> ???
> >>
> >> Pardon my ignorance if this question is basic ...
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
> >> http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> > --
> > Narbik Kocharians
> > CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> > www.MicronicsTraining.com
> > Sr. Technical Instructor
> > YES! We take Cisco Learning Credits!
> > Training And Remote Racks available
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> >
> >
> >
> >
> >
>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina

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Received on Sun Sep 26 2010 - 09:57:44 ART