From: Anthony Pace (anthonypace@xxxxxxxxxxx)
Date: Wed Jun 12 2002 - 16:57:48 GMT-3
It seems as though OSPF "area/range" summarization will make it to
routers in anohter router on the other side of an ABR, but the ABR's
will always still see the non-summarized route as an "O" route. In
these practice labs many of the routers are ABR's so you frequntly
don't see the IA routes from ohter ABR's unless you are upstream of the
ABR doing the summary. This is what I have noticed.
Anthony Pace
On Mon, 10 Jun 2002 22:36:50 -0400, "Thomas Larus" <tlarus@cox.net>
said:
> Why can we summarize area 0 addresses sometimes and not others. Is it
> perhaps that we are sometimes trying to summarize an address that is
> directly connected. There are some people who even have said that you
> cannot use summarize area 0 addresses.
>
> If you can't, then how in the world can you ever summarize the classic
> VLSM
> area 0 frame-relay cloud?
>
> Also, regarding the other night's discussion of the trick of
> redistributing
> connected to get the loopback into OSPF and using summary-address to
> make it
> a length that IGRP and RIP could handle, does have its downside in
> that, of
> course, you might not want to redistribute all the other connecteds on
> the
> router into your OSPF domain.
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