From: Waters, Kivas (UK72) (Kivas.Waters@xxxxxxxxxxxxx)
Date: Fri Jan 04 2002 - 07:36:40 GMT-3
Study these URL's and you should be on top of this problem.
http://www.cisco.com/warp/public/105/52.html
http://www.cisco.com/warp/public/105/53.html
http://www.cisco.com/warp/public/105/54.html
best regards
Ki
-----Original Message-----
From: Chua, Parry [mailto:Parry.Chua@compaq.com]
Sent: 04 January 2002 10:11
To: Chua, Parry; VZ; Annu
Cc: ccielab@groupstudy.com
Subject: RE: various OSPF routes redis into IGRP
Hi,
My previous answer is wrong, I should have wait for long enough to see
the result.
Internal or external route with supernet will not redistrbuted to igrp
from ospf
May be someone could post their result and comments.
> Parry Chua
>
>
-----Original Message-----
From: Chua, Parry
Sent: Friday, January 04, 2002 5:25 PM
To: VZ; Annu
Cc: ccielab@groupstudy.com
Subject: RE: various OSPF routes redis into IGRP
>All external supernet routes(such as 4.0.0.0/6, 150.4.0.0/14) will not
>be redis into IGRP, that means you can not see them in routing table of
>R1's.
ANS : No, see below :
I just do a test, the external supernet routes has redistributed into
IGRP as a numbers
of classful route. eg 10.0.0.0/7 (ospf) -> 10.0.0.0/8 and 11.0.0.0/8
> Parry Chua
>
>
-----Original Message-----
From: VZ [mailto:vincentzhang@yahoo.com]
Sent: Friday, January 04, 2002 4:49 PM
To: Annu
Cc: ccielab@groupstudy.com
Subject: Re: various OSPF routes redis into IGRP
Annu,
Quite simple one. and I summarize the problems into one only.
<-------IGRP-----> | <----ospf --->
R1-----------------R2----------------R3
All interfaces are under 172.16.0.0 /24, and R2 is redis OSPF to IGRP
domain.
If configuring loopback intf in R3 and try to put the loop address into
OSPF as follows.
All external supernet routes(such as 4.0.0.0/6, 150.4.0.0/14) will not
be redis into IGRP, that means you can not see them in routing table of
R1's.
Why and thanks,
VZ
Annu wrote:
>VZ,
>
>What is the scenario u are trying ? may be a diagram
>with IP addreses would help in simulating it here at
>my end.
>
>good luck,
>Annu
>
>--- VZ <vincentzhang@yahoo.com> wrote:
>
>>Kivas,
>>
>>NO, I really find the difference in treatment of
>>internal and external
>>OSPF routes in lab environment.
>>
>>Would you check it?
>>
>>V
>>
>>Waters, Kivas (UK72) wrote:
>>
>>>Hi Vincent, your understanding of the below issue
>>>
>>is not 100%. Any OSPF
>>
>>>routes which are subnetted, internal or external,
>>>
>>will not be redistributed
>>
>>>into a classful IGRP network. The issue here is a
>>>
>>classful subnet mask
>>
>>>issue, OSPF internal routes are not treated any
>>>
>>differently to OSPf external
>>
>>>routes when it comes to redistribution into RIPv1
>>>
>>or IGRP.
>>
>>>1. Is it right result? No.
>>>
>>>best regards
>>>
>>>Ki
>>>
>>>-----Original Message-----
>>>From: VZ [mailto:vincentzhang@yahoo.com]
>>>Sent: 31 December 2001 03:21
>>>To:
>>>Subject: various OSPF routes redis into IGRP
>>>
>>>
>>>Hello All,
>>>
>>>Considering the situation that a router performs
>>>
>>OSPF/IGRP redistribution.
>>
>>>all OSPF internal routes will be redistributed into
>>>
>>IGRP even if
>>
>>>classful/supernet/subnet mask routes they are.
>>>
>>>all OSPF external with classful mask will be
>>>
>>redistributed too.
>>
>>>But all OSPF external with supernet/subnet mask
>>>
>>will NOT be redistributed.
>>
>>>My questions,
>>>
>>>1. Is it right result?
>>>2. IS the same result for ospf -> RIP/EIGRP or not?
>>>
>>>thanks, V
>>>
>>>
>>>
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