From: NET HE (he_net@hotmail.com)
Date: Mon Sep 10 2007 - 21:47:36 ART
In addition, cmd "area 23 nssa no-summary" can only be used at ABR routers,
but cmd "area 23 nssa defalut-information-originate" can be used at ABR
routers or ASBR routers, which are located in NSSA area, and inject type-7
LSA.
Best Regards,
Net (Xin) He
>X-OriginalArrivalTime: 10 Sep 2007 23:08:20.0266 (UTC)
>FILETIME=[7A9CE0A0:01C7F3FF]
>
>with the "no-summary" option, the ABR will inject a default route and
>it will also block all LSA type 3s, therefore, the routers in the NSSA area
>will NOT see the inter-area routes. But with the "default-information"
>keyword, the ABR will inject a default route but it won't block LSA type 3s
>and as a result of that the routers within the NSSA area will still
>maintain
>LSA type 3s (Inter-Area routes).
>
>On 9/10/07, Carlos Trujillo Jimenez <nergal888@hotmail.com> wrote:
> >
> > Hi all.
> >
> > I have a NSSA area, the routers from the NSSA dont need reachability
> > information about the external prefixes, that means I must inject a
> > default
> > route for the external prefixes reachability.
> >
> > I have two options to do it.
> >
> > at the area border router:
> >
> > area 23 nssa no-summary
> >
> > or
> >
> > area 23 nssa defalut-information-originate
> >
> > Is there any significant difference between both options?? both works,
>by
> > a
> > show ip route at the internal routers of the nssa area I can see an
> > external
> > IA default route with both commands, theres is no difference, any ideas
> > when
> > one of these options can and cannot be used???
> >
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>
>--
>Narbik Kocharians
>CCIE# 12410 (R&S, SP, Security)
>CCSI# 30832
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