From: Tim Fletcher (tim@fletchmail.net)
Date: Mon May 12 2003 - 17:05:22 GMT-3
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.
This archive was generated by hypermail 2.1.4 : Mon Jun 02 2003 - 15:13:41 GMT-3