Re: LSA Type 4 again

Here:
http://books.google.com/books?id=8ZAQR-_TJJcC&pg=PA364&lpg=PA364&dq=juniper+abr+type+4&source=bl&ots=atDHxpQSZt&sig=a_2BG2ioWtqAigxn2GJYQ0w4C3c&hl=en&ei=Cf6jSq7RLMbajQeYieGzDg&sa=X&oi=book_result&ct=result&resnum=1#v=onepage&q=&f=false

LSA type 4 in Area 0.0.0.0
check the show ospf database at next page

On Sun, Sep 6, 2009 at 10:18 PM, Narbik Kocharians <narbikk_at_gmail.com>wrote:

> Rick
>
> Always look at it from the perspective of the router that originated LSA
> type 5s, in a NSSA the ASBR originates type 7, but the ABR receives type 7s
> and originates type 5s, therefore, area 0 will NOT see LSA type 4s, but if
> area 0 was connected to another area, that third area will receive type 4s.
> I think of the ABR (The one that connects the NSSA to area 0) as a
> pseudo-ASBR. BTW i did not say that this will be explained in the same
> manner in the RFC, just the way i think of that ABR.
> On Sun, Sep 6, 2009 at 11:13 AM, Rick Mur <rmur_at_ipexpert.com> wrote:
>
> > Wow I think this is the first time I detect an error in text from Jeff
> > Doyle, damn! he is human after all :-P
> >
> > --
> >
> > Rick Mur
> > CCIE2 #21946 (R&S, Service provider)
> > Sr. Support Engineer -- IPexpert, Inc.
> >
> > Sent from my iPhone
> >
> > On 6 sep 2009, at 18:26, Narbik Kocharians <narbikk_at_gmail.com> wrote:
> >
> > LSA type 4 WILL NOT be permitted in any stub areas, as a matter of fact
> > it won't even be in the area 0, if you have area 0 and a NSSA area, the
> only
> > time you will see LSA type 4s is if you have another area (Non-zero area
> )
> > connected to area 0.
> >
> >
> > Therefore, i agree with Scott.
> >
> > On Sun, Sep 6, 2009 at 8:46 AM, Rick Mur <rmur_at_ipexpert.com> wrote:
> >
> >> That's a pretty clear explanation :-)
> >>
> >> --
> >>
> >> Rick Mur
> >> CCIE2 #21946 (R&S, Service provider)
> >> Sr. Support Engineer -- IPexpert, Inc.
> >>
> >> Sent from my iPhone
> >>
> >>
> >> On 6 sep 2009, at 17:20, Scott Morris <swm_at_emanon.com> wrote:
> >>
> >> "Allowed" and "will exist" are two different things. I'll let Jeff run
> >>> with the idea that they're permitted in NSSA areas 'cause I like Jeff.
> >>> However, I will guarantee that they will not exist in NSSA areas. :)
> >>>
> >>> So call it whatever you want!
> >>>
> >>>
> >>>
> >>>
> >>> *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider)
> #4713,
> >>>
> >>> JNCIE-M #153, JNCIS-ER, CISSP, et al.
> >>>
> >>> CCSI #21903, JNCI-M, JNCI-ER
> >>>
> >>> swm_at_emanon.com
> >>>
> >>>
> >>> Knowledge is power.
> >>>
> >>> Power corrupts.
> >>>
> >>> Study hard and be Eeeeviiiil......
> >>>
> >>>
> >>>
> >>> Molomo wrote:
> >>>
> >>>> Experts,
> >>>>
> >>>> Jeff Doyle says LSA type 4 is allowed in nssa area ( see table below).
> I
> >>>> would have thought that since LSA 5 is not permitted then no need to
> >>>> generate LSA 4.
> >>>>
> >>>> My understanding is , ABR generates LSA 4 based on the type 5, to
> >>>> describe
> >>>> the position of the ASBR.
> >>>>
> >>>>
> >>>> Or am I missing something here?

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Received on Sun Sep 06 2009 - 22:28:35 ART