RE: Summarizing LSA-3 in ospf

From: Scott Morris (smorris@internetworkexpert.com)
Date: Sat Aug 16 2008 - 11:48:00 ART

Your inter-area routes are already summarized (hence the name Summary LSA!).
:)
 
You can do a total stub area, and make everything reachable througgh a
default route if you are interested. So you'd need to consider how routes
are already summarized and where they are summarized (ABRs only) to make
some sense through what does or what does not summarize!
 
I would suggest setting up a few simple areas on routers and start
practicing summarization. Once you get The Type1 and Type2's summarized
(intra area) try to expand your summary to include some neighboring type 3
lsa's and see what happens! That's really the way that will solidify
things in your head!
 
Cheers,
 
Scott

  _____

From: Fahad Khan [mailto:fahad.khan@gmail.com]
Sent: Saturday, August 16, 2008 10:35 AM
To: swm@emanon.com
Cc: smorris@internetworkexpert.com; Ibrahim kabir; Cisco certification
Subject: Re: Summarizing LSA-3 in ospf

Thank you very much Sir, Is there any to summarize "inter-area" routes?

On 8/16/08, Scott Morris <swm@emanon.com> wrote:

Correct.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Fahad Khan
Sent: Saturday, August 16, 2008 9:49 AM
To: smorris@internetworkexpert.com
Cc: Ibrahim kabir; Cisco certification
Subject: Re: Summarizing LSA-3 in ospf

Sir,

Area-range is used for summarizing "intra-area" routes. right?

On 8/16/08, Scott Morris <smorris@internetworkexpert.com> wrote:
>
> Area-range is for internal routes. Summary-address is for external
routes.
>
> HTH,
>
>
> Scott Morris, CCIE4 #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al.
> CCSI/JNCI-M/JNCI-ER
> Senior CCIE Instructor
>
> smorris@internetworkexpert.com
>
>
>
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>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Ibrahim kabir
> Sent: Saturday, August 16, 2008 8:11 AM
> To: Fahad Khan; Cisco certification
> Subject: RE: Summarizing LSA-3 in ospf
>
> Fahad,
>
> Wich command did you use? area x range or summary-address. I think the
> area x range command should work fyn for you.
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--
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