From: yujianchun (stiff.yu@xxxxxxxxxxxxxxxxxx)
Date: Fri Sep 15 2000 - 04:45:55 GMT-3
pls use redistribute connect and summary address,
I can get it work.
-----Original Message-----
From: Geatti <geatti@home.com>
To: ccielab@groupstudy.com <ccielab@groupstudy.com>
Date: 13 September 2000 23:40
Subject: Last few days before exam, OSPF --->classful protocol question
>Just the last few days of cramming here until my lab.
>I have a question about OSPF and Classless routing protocols such as IGRP.
>
>Consider the scenario below.
>
> ---------------------\ /----------------
> \ /
> \ /
>10.10.20.128/25 \ / 10.10.30.0/24
> | )( |
> |---------R1----------R2-----------R3--------|
> | )( |
> OSPF AREA 0 / \ IGRP 100
> / \
> / \
> ---------------------/ \-----------------
>
>3 routers, R1, R2 and R3. R2 is performing mutual redistribution between
>IGRP and OSPF.
>We are using different masks, IGRP is a /24 and OSPF a /25.
>My question is this, is there any way of getting routes from OSPF into
IGRP?
>As I understand,
>
>1. We must get the mask down to /24 for IGRP to even look at it as it won't
>cope with VLSM.
>2. Normally you could summarize into area 0 with the area range command but
>as we are in area 0 with this route we are out of luck there.
>3. The only way I know of doing this is
> a. Use the ip default-network and point it to a glassful net other than
>your own. (still a default route)
> b. Create a static route on R2 for 10.10.20.0/24 and redistribute that
>static into IGRP. (A static route)
>
>Is there any way other than what I have mentioned above of doing this? I
>would really appreciate any cool walk arounds for this situation. The
>easiest thing to do would be to change the area of this route so we could
>summarize it down to /24, however I am looking for a solution that doesn't
>involve changing the area. I'm not sure there is a solution to this
>situation but there's a lot of smart people on this board so who knows.
>
>
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