From: Nigel Taylor (nigel_taylor@xxxxxxxxxxx)
Date: Tue Aug 28 2001 - 14:47:05 GMT-3
Peter,
You are correct. I must admit in making the suggestion I
completely forgot(mental laps) that the loopback by being redistributed
into ospf would be considered external, which would send the type 5 LSA
untouched through the ospf routing domain.
In thinking through this implementation(from a lab standpoint) I don't
believe there's any other way than changing the configuration of the
loopback on R1 and making it a part of the ospf domain so that R5 would
recieve the route versus redistributing it into the ospf process.
Thanks
Nigel
>From: "Peter Van Oene" >Reply-To: "Peter Van Oene" red >To:
ccielab@groupstudy.com >Subject: Re: ospf nssa backwards >Date: Tue, 28
Aug 2001 09:02:12 -0400 > >I don't believe you can summarize type 5's
with the area range command. Type 5's are designed to flow unmodified
throughout the OSPF domain. > >Pete > > >*********** REPLY SEPARATOR
*********** > >On 8/28/2001 at 8:16 AM Nigel Taylor wrote: > > >Voytek, >
> > > The problem here is that NSSA area does not accept type 5 > >LSa's.
In this scenario R3 is the NSSA ABR, and R4 is the NSSA ASBR. > >Since >
>you already redistributed connected the loopback on R1 possibly to meet
a > >requirement, then you can look at using the "area 1 range" command
which > >would generate a type 3. LSA(network summary) allowing those
routes to get > >through to the NSSA area and to IGRP. > > > >The other
question here would be is all of the addressing classfull or not. >
>Because depending on the nature of the mask and how the addressing
scheme > >is > >implemented you could still have a problem getting that
route to show up on > >R5(VLSM <-> FLSM issues) > > > >HTH > > > >You
might want to try reading the RFC 2328. Doyle's - Routing TCP/IP is a >
>good text to have also.. > > > >Nigel.. > > > >Anyone care to add to
this... > > > > > >----- Original Message ----- > >From: Voytek
Mielczarek > >To: > >Sent: Tuesday, August 28, 2001 3:05 AM > >Subject:
ospf nssa backwards > > > > > >> Group, > >> > >> How would you get
routes E1 or E2 through NSSA as below: > >> > >> > >> area1 area0 nssa
IGRP > >> R1----------R2----------R3----------R4----------R5 > >> > >> >
>> Loopback interfaces on R1 get "redistributed connected" and appear on
R3 > >as E2 routes, but do not appear on R4. > >> They need to be
propagated across nssa out to IGRP. Is this a mission > >impossible? > >>
> >> Thanks, Voytek > >> **Please
read:http://www.groupstudy.com/list/posting.html > >**Please
read:http://www.groupstudy.com/list/posting.html >**Please
read:http://www.groupstudy.com/list/posting.html
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