Once solution would be to define multiple subinterfaces with the respective 
/28, /26, and /25 network masks.  Classful protocols assume that the subnet 
mask being used on the router is the subnet mask that a protocol update is 
using as well, if there is no matching mask they default to the standard 
classful network mask.  So putting these other netmasks on the router 
should fix the problem since then the router will know which updates belong 
in which subnet.  I haven't tried it, but it seems like it would work to me :-)

At 01:45 AM 3/7/01, you wrote:
>you'll just have to use the 24 bit masks that are default in the IGRP
>routing protocol.   Or establish and redistribute static routes into your
>IGRP routing process.
>
>see http://www.cisco.com/warp/public/105/52.html for some other direction
>
>-e-
>
>Prasanna <[EMAIL PROTECTED]> wrote in message
>983mlr$unf$[EMAIL PROTECTED]">news:983mlr$unf$[EMAIL PROTECTED]...
> > Hi Guys
> >
> >  I was trying to redistribute from OSPF Domain ( has variable subnets
>,/24,
> > /28 , /26  & /25 ) to IGRP domain ( /24 ) , i got severe masking issue  as
> > IGRP is classfull and i could able to redistribute only /24 subnets .I was
> > trying to implement summary address with /24  towards IGRP but i could not
> > able to summarize the subnets.
> >
> > OSPF subnets -  192.168.112.0/24
> >                           192.168.113.192/26
> >                           192. 168.114.128/25
> >                            192.168.115. 240/28
> >
> >
> >
> > IGRP subnet   - 192.168.110.0/24
> >                          192.168.111.0/24
> >
> >
> >
> > What is the elegant way to solve this problem
> >
> >
> > _________________________________
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