Re: OSPF IA advertisements

Yes, he said, but I assumed that was what described which routes he
wanted to filter in a pre-filter environment.
Again, this is not doable inside the box, AFAIK.
-Carlos

Marko Milivojevic @ 02/07/2013 17:26 -0300 dixit:
>
> I think he explicitly asked about the inter-area routes, so I wasn't
> even thinking about the externals. I don't think you can set the tags on
> internal or inter-area.
>
> --
> Marko Milivojevic - CCIE #18427 (SP R&S)
> Senior CCIE Instructor / Managing Partner - IPexpert
>
>
> On Tue, Jul 2, 2013 at 12:02 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar
> <mailto:tron_at_huapi.ba.ar>> wrote:
>
> Redistributing and setting external tags, I guess.
> I did not think about the details, as I was more concerned with
> showing that the requested functionality was impossible without
> going outside the box, so to say...
>
> -Carlos
>
> Marko Milivojevic @ 02/07/2013 15:19 -0300 dixit:
>
>
> He could do it with prefix-lists, but that's not very scalable.
>
> How would you tag inter-area routes though?
>
> --
> Marko Milivojevic - CCIE #18427 (SP R&S)
> Senior CCIE Instructor / Managing Partner - IPexpert
>
>
> On Tue, Jul 2, 2013 at 11:14 AM, Carlos G Mendioroz
> <tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar>
> <mailto:tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar>>> wrote:
>
> Eduardo,
> once the LSAs are in area 0, there is no memory of them
> coming from
> area (say) 10. So if I understand your request correctly,
> there is
> no "native" ospf way of doing this.
>
> On the other hand, you could tag your routes with the area
> it came
> from at the ABRs, and filter based on those tags (also on
> ABRs).
>
> -Carlos
>
> Eduardo Vazquez @ 02/07/2013 06:57 -0300 dixit:
>
> Hello,
>
> Was wondering if anyone could suggest ways to stop
> advertisements out of
> area 0 from a non area 0 from going to in to another
> non area 0
> existing,
> or future.
>
> In other words:
>
> A50-----A0----A1
> \----A2
>
> If area 50 advertises say O 10.1.50.0/24
> <http://10.1.50.0/24> <http://10.1.50.0/24>.
>
> Can people suggest a way to stop
> the route from flooding to a1 a2 and any future areas?
>
> Thanks,
>
> Ed
>
> Hopefully the diagram came out. Doing this on an iPhone.
>
>
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> Carlos G Mendioroz <tron_at_huapi.ba.ar
> <mailto:tron_at_huapi.ba.ar> <mailto:tron_at_huapi.ba.ar
> <mailto:tron_at_huapi.ba.ar>>>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net