Re: OSPF IA advertisements

How about separate processes with redistribution and filtering there?

Regards,
 Joe Sanchez

( please excuse the brevity of this email as it was sent via a mobile device. Please excuse misspelled words or sentence structure.)

On Jul 2, 2013, at 3:34 PM, Carlos G Mendioroz <tron_at_huapi.ba.ar> wrote:

> 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>>>
>>
>> LW7 EQI Argentina
>>
>>
>>
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>>
>>
>> _______________________________________________________________________________
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>>
>>
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>>
>>
>>
>>
>> --
>> Carlos G Mendioroz <tron_at_huapi.ba.ar <mailto:tron_at_huapi.ba.ar>>
>> LW7 EQI Argentina
>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
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Received on Tue Jul 02 2013 - 17:30:48 ART