From: Ram Thunai Selvam-Consultancy-Chennai (thunai@xxxxxxxxxxxx)
Date: Thu Apr 04 2002 - 06:57:48 GMT-3
Even though summary address command is unidirectional and used to summarize
only the external routes.. When u say summary command of the internal
networks it will create a null route and say redistribute connected u will
get in the igrp router...
Regds
Thunai
-----Original Message-----
From: Chua, Parry [mailto:Parry.Chua@compaq.com]
Sent: Thursday, April 04, 2002 2:41 PM
To: Mas Kato; guy.lupi@eurekaggn.com
Cc: ccielab@groupstudy.com
Subject: RE: OSPF to IGRP redistribution (I know this has been killed, thi s
is short I promise)
A point to take note is :
Area x range summary route by ABR is directional.
Summary address route by ASBR is unidirection.
Parry Chua
-----Original Message-----
From: Mas Kato [mailto:loomis_towcar@speedracer.com]
Sent: Thursday, April 04, 2002 3:47 PM
To: guy.lupi@eurekaggn.com
Cc: ccielab@groupstudy.com
Subject: RE: OSPF to IGRP redistribution (I know this has been killed,
thi s is short I promise)
[demime could not interpret encoding binary - treating as plain text]
Guy,
Don't worry, you've already solved this problem when you used the
'summary-address' command and redistributed the summary into IGRP. R1's role
in this case is an ASBR since it's the one speaking to the external
autonomous system--in this case, IGRP.
When you used the 'area-range' command, you influenced R1s role as an ABR,
which provided summarization for the benefit of other OSPF-speaking routers
within the OSPF autonomous system.
So you've got it covered.
Regards,
Mas Kato
https://ecardfile.com/id/mkato
> "Lupi, Guy" <Guy.Lupi@eurekaggn.com> "'Mas Kato'"
<loomis_towcar@speedracer.com>Cc: ccielab@groupstudy.com
>Date: Wed, 3 Apr 2002 16:39:57 -0500
>
>Right, that is what I did, R1 is a member of 2 areas, area 1 and area 0.
>Here is a partial output of "show ip ospf". This is why I don't understand
>why it isn't working. I thought that as long as the router was an ABR, you
>could use area range to summarize and inject into IGRP.
>
>r1#sh ip os
> Routing Process "ospf 100" with ID 141.63.10.1 and Domain ID 0.0.0.100
> Supports only single TOS(TOS0) routes
> Supports opaque LSA
> It is an area border and autonomous system boundary router
>
>-----Original Message-----
>From: Mas Kato [mailto:loomis_towcar@speedracer.com]
>Sent: Wednesday, April 03, 2002 4:30 PM
>To: Lupi, Guy
>Cc: ccielab@groupstudy.com
>Subject: RE: OSPF to IGRP redistribution (I know this has been killed,
>this is short I promise)
>
>
>Guy,
>
>Although router1 is certainly an ASBR, it really doesn't become an ABR
until
>it becomes a member of two or more OSPF areas. If you hung another
>OSPF-speaking router off of router1 and placed it in an area different from
>router5, you would then see the results of your 'area range' command on
that
>new router, because that new router would know how to read the type 3
>summary LSAs being originated by router1.
>
>Regards,
>
>Mas Kato
>https://ecardfile.com/id/mkato
>
>> "Lupi, Guy" <Guy.Lupi@eurekaggn.com> "'ccielab@groupstudy.com'"
><ccielab@groupstudy.com>Date: Wed, 3 Apr 2002 14:44:12 -0500
>>Reply-To: "Lupi, Guy" <Guy.Lupi@eurekaggn.com>
>>
>>I know this has been covered in detail before, I just want to verify
>>something. I have the following:
>>
>>router2---------router1--------router5
>>
>>Router 5 and router 1 are OSPF, router 2 and router 1 is igrp only. I
know
>>how to use the secondary address, tunnel, and route-map methods. I know
>how
>>to use summary address on router 1 to get connected routes that are not in
>>OSPF onto router 2. I cannot get routes from router 5 to router 2 using
>>area range on router 1. Router 1 is an ASBR, and an ABR. I cannot use
the
>>area range command to get the route from r5 to r2, and summary address
>would
>>never work, but tunnels, route-maps, and secondary addresses work. I
>>thought that if the router was an ABR, you could do "area-range [area
route
>>is from] x.x.x.x x.x.x.x". Thanks.
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