Re: OSPF : LSA

I guess I'm not representative of the audience, but I rather see a 2
line description of a non obvious implementation detail than a 15 minute
VoD about it.

Like in the scenario you presented, it may not be obvious but having a
VL between the ABR and the bottom left router will bring the route there
"out of nowhere" :)

-Carlos

Narbik Kocharians @ 26/09/2010 4:47 -0300 dixit:
> I may do a complete VoD for Filtering in OSPF, there are LOTS of other
> behaviours and technics that are NOT covered in ANY book. Let me see if
> i have time and i will put something together. Would you guys like this
> kind of presentation?
>
> On Sun, Sep 26, 2010 at 2:27 PM, kamal negi <kamalnegi.81_at_gmail.com
> <mailto:kamalnegi.81_at_gmail.com>> wrote:
>
> 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 <mailto: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
> <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 <mailto: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 <http://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 <mailto:tron_at_huapi.ba.ar>>
> LW7 EQI Argentina
>
>
>
>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com <http://www.MicronicsTraining.com>
> Sr. Technical Instructor
> YES! We take Cisco Learning Credits!
> Training And Remote Racks available

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net