From: Marc (tan@dia.janis.or.jp)
Date: Mon May 12 2003 - 21:05:52 GMT-3
Thank you both Tim and Kasturi. That cleared it up for me. Marc
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Tim Fletcher
> Sent: Tuesday, May 13, 2003 5:05 AM
> To: Marc; Ccielab (E-mail); 'kasturi cisco'
> Subject: RE: originate vs originate always
>
>
> rtr(config-router)#area 1 nssa default-information-originate ?
> no-summary Do not send summary LSA into NSSA
> <cr>
>
> rtr(config-router)#area 1 nssa default-information-originate
>
> The "always" keyword only applies the the
> "default-information originate"
> command, not the "area x nssa default-information-originate"
> command. The
> "area x nssa default-information-originate" will always
> generate a default
> route into the nssa area, whether you have a default or not.
>
> HTH
>
> -Tim Fletcher #11406
>
> At 12:46 AM 5/13/2003 +0900, Marc wrote:
> >Thanks Kasturi, I think I undertand the general concept with
> and without the
> >always keyword. A simple scenario I was working earlier though seemed
> >backwards.
> >
> >nssa client
> >default route shows up in route-table
> >nssa external type 7, 0.0.0.0
> >
> >nssa abr/asbr
> >area x nssa default-i-o (no always keyword)
> >
> >Even when the asbr/abr DID NOT have the default route and
> d-i-o without the
> >always keyword, the nssa far router had a default route show
> up in route
> >table. I thought someone might know off the top of their head an
> >explanation. Maybe I'll lab it up again and send configs.
> Probably made a
> >mistake. Thanks, Marc.
> > -----Original Message-----
> > From: kasturi cisco [mailto:kasturi_cisco@hotmail.com]
> > Sent: Monday, May 12, 2003 11:42 PM
> > To: tan@dia.janis.or.jp
> > Subject: Re: originate vs originate always
> >
> >
> > Marc,
> >
> > Let us asssume the toplogy: R1------R2--------R3-------cloud
> > All of them in area 0 for ease.
> >
> > R3 is generating the default to cloud using : ip route
> 0.0.0.0 0.0.0.0
> >x.x.x.x. Now to generate the default route into OSPF u have to use
> >"default-inf-org" cmd on R3 such that R2 and R1 get it.
> >
> > When u use just "default-inf-org" on R3 it will generate
> the default if it
> >has one itself (like above).
> > When u use just "default-inf-org always" on R3 it will
> generate the
> >default even if does not have it. This can lead to
> blackholing in case R2/R1
> >send traffic to R3 which does not have the default itself.
> >
> > Hope that helps.
> >
> > Good Luck,
> > Kasturi.
> >
> > >From: "Marc"
> > >Reply-To: "Marc"
> > >To: "Ccielab (E-mail)"
> > >Subject: originate vs originate always
> > >Date: Sun, 11 May 2003 16:32:38 +0900
> > >
> > >On an asbr/abr and with virtual link, I am trying to
> figure out why I
> >don't
> > >get expected behaivor of default-i-o towards an nssa area.
> > >
> > >I had thought that
> > >-with no previous learned default, must use "always" keyword
> > >-with previous learned default, do not need "always" keyword.
> > >
> > >But I find without a previous learned default, the
> default gets sent
> >anyway
> > >without the "always" keyword. Can someone explain if
> there is some other
> > >parameter involved with d-i-o besides just having the
> default already
> > >learned through other means?
> > >
> > >Thanks
> >
> >
> >-------------------------------------------------------------
> ---------------
> >--
> > Mega movies. Mega prizes. Switch to Hallmark channel.
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