From: alex (ecralar@hotmail.com)
Date: Wed Feb 08 2006 - 07:58:18 GMT-3
On r3 do "network 10.1.1.0 0.0.0..255 area <whatever>" and
"passive-interface <R3 interface facing SW1>" , I think it should fix Your
problem...
HTH
Cheers
Alex
----- Original Message -----
From: "Popgeorgiev Nikolay" <nikolay.popgeorgiev@siemens.com>
To: "alex" <ecralar@hotmail.com>; "Popgeorgiev Nikolay"
<nikolay.popgeorgiev@siemens.com>; "Chris Lewis" <chrlewiscsco@gmail.com>
Cc: <ccielab@groupstudy.com>
Sent: Wednesday, February 08, 2006 10:33 AM
Subject: RE: ospf again
> Alex,
> Yes you are right, cause I tried to shut the interface to SW1 and the
> forwarding address came in the routing table from the other way and it
> works, I saw that before,
> But let's say the situation is like mine it is a circle of routers but I
> want to have it like a chain - meaning I don't want to enable ospf on the
> link between the last and the first. The solution is to receive the
> forwarding address from the same way from where you receive the LSAs but
> how to do this without shutting the interface I have no idea...
>
> Best,
> Nick
>
>
>
> -----Original Message-----
> From: alex [mailto:ecralar@hotmail.com]
> Sent: Wednesday, February 08, 2006 12:18 PM
> To: Popgeorgiev Nikolay; Chris Lewis
> Cc: ccielab@groupstudy.com
> Subject: Re: ospf again
>
> I think Your problem relates to the fact that OSPF is not enabled on the
> R3-SW1 subnet (if I remember correctly) therefore the forwarding address
> is
> known to R3 via "connected" route.
> This is not a valid situation, the forwarding address must be Type-1,
> Type-2
> or Type-3 OSPF route. In case of directly connected forwarding address the
> "network" statement should cover the whole subnet and not just interface
> (e.g. "network 10.1.1.0 0.0.0.255" as opposed to "network 10.0.0.1
> 0.0.0.0"<===this will cause You problems just described).
> HTH
> Cheers
> Alex
>
>
> ----- Original Message -----
> From: "Popgeorgiev Nikolay" <nikolay.popgeorgiev@siemens.com>
> To: "Chris Lewis" <chrlewiscsco@gmail.com>; "Popgeorgiev Nikolay"
> <nikolay.popgeorgiev@siemens.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Wednesday, February 08, 2006 7:38 AM
> Subject: RE: ospf again
>
>
>> Chris,
>>
>> Actually we are talking about N2 routes no inter or intra area routes.
>> The
>> case is simple and I don;t think there is something else. I think there
>> is
>> a special rule for my case but I cannot find it.
>>
>> If you have time and will try it.
>>
>>
>>
>> best,
>>
>> Nick
>>
>>
>>
>>
>>
>> _____
>>
>> From: Chris Lewis [mailto:chrlewiscsco@gmail.com]
>> Sent: Tuesday, February 07, 2006 4:11 PM
>> To: Popgeorgiev Nikolay
>> Cc: ccielab@groupstudy.com
>> Subject: Re: ospf again
>>
>>
>> The state of forward address only relates to external routes, not inter
>> area routes. For an external LSA to be inserted in to the routing table,
>> the forward address needs to be 0.0.0.0 <http://0.0.0.0> or known via an
>> inter or intra area route. As this is NSSA, the discussion of external
>> routes is moot anyway.
>>
>> It reads like you have some other configuration problems.
>>
>> Try a look at http://www.cisco.com/warp/public/104/trouble_main.html
>> <http://www.cisco.com/warp/public/104/trouble_main.html>
>>
>> Chris
>>
>> On 2/7/06, Popgeorgiev Nikolay <nikolay.popgeorgiev@siemens.com
>> <mailto:nikolay.popgeorgiev@siemens.com> > wrote:
>>
>> Hello people,
>>
>> I asked a question about a problem with ospf and nssa but maybe I didn't
>> explain it the best way so nobody respond.
>>
>> It is a question why no matter that a LSA is in the database of ospf it
>> sometimes is not installed in the routiing table. I have a case where a
>> router(B) in nssa is receiving a lsa about a network(loopback address)in
>> area 0 but is not installing it in the routing table. The question is
>> why.
>>
>> After some investigation I came to the conclusion that the reason for
>> this
>> is that the Forward address: of the lsa is directly connected to my
>> router
>> B.
>>
>> When I shut the interface of B to this Forwarding Address the LSA is
>> installed in the routing table.
>>
>> So is there some rule saying something about how the receiving router is
>> reaching the Forwarding address of the lsa ?
>>
>> thanks
>>
>> Nick
>>
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