From: Kris Foster (kris@xxxxxxxxx)
Date: Wed Apr 18 2001 - 16:12:06 GMT-3
My only concern with this solution is now R1 will be using a broadcast
address that is slightly wacked. This isn't going to cause conflicts in
other places?
Kris,
On Wed, 18 Apr 2001, Rob Hopkins wrote:
> come on guys, dont give up so easy...
>
> change the subnet mask on r1 to /22, I know we were always taught subnet
> masks should
> match, but as long as you keep track of what each router "thinks" its
> connected to, it will be alright..
> If R1 needed to have any routes from 172.16.37.0 thru 172.16.39.0 you're
> gonna have bigger problems,
> (unless they are hanging out on your serial port..) but since it wasnt in
> this case..
>
> output follows:
>
>
> 172.16.0.0/24 is subnetted, 3 subnets
> C 172.16.36.0 is directly connected, Serial0
> I 172.16.24.0 [100/8976] via 172.16.35.1, 00:01:56, Serial0
> [100/8976] via 172.16.36.1, 00:00:07, Serial0
> C 172.16.6.0 is directly connected, Loopback100
> r2#
>
>
>
>
> ----- Original Message -----
> From: "Alejandro Cadarso" <a.cadarso@uniway-tec.com>
> To: "Darren Ward" <dward@pla.net.au>; "Walter Chen" <wchen@iloka.com>;
> "ccielab" <ccielab@groupstudy.com>; <lkounkar@uu.net>
> Sent: Wednesday, April 18, 2001 12:37 PM
> Subject: Re: Redistributing OSPF /22 to IGRP /24, same mayor network
>
>
> > Good idea Darren,
> >
> > Perhaps your way could work, the problem is that when I try to put any
> > IP address from the /24's in a loopback I have:
> >
> > >r4(config-if)#ip address 172.16.26.1 255.255.255.0
> > >172.16.26.0 overlaps with Ethernet0
> >
> > This sounds logical because in this case we would have two interfaces in
> > the same /24 network
> >
> > Louie Answer could be better the problem is that I have another OSPF
> > Router in the same mayor network and I'm not allowed to change it.
> >
> > Thanks very much for your help, but I think there is no answer.
> >
> > Alejandro.
> >
> >
> > Darren Ward wrote:
> >
> > > Hows this sound for a silly idea:
> > >
> > > The requirement is to get a /20 into a /24 IGRP domain.
> > > The second requirement is that no static's can be used at all.
> > >
> > > Create a second OSPF process on the redistributing router (ospf 2 for
> arguments
> > > sake)
> > > Create one or more loopbacks and put the 4 /24's on it.
> > > Redistribute the ospf 2 into IGRP and IGRP into ospf 1.
> > >
> > > You may need to do some tweaking on the border router, maybe policy
> routing at
> > > worst.
> > >
> > > Darren
> > >
> > >
> > > Walter Chen wrote:
> > >
> > >> The "area x range" command won't work in this case because it won't
> change
> > >> the way directly connected networks are redistributed to IGRP. Using
> static
> > >> routes in this case is preferred because you only need four of them.
> > >>
> > >> However, if you were asked to redistribute /20 OSPF into /28 IGRP (in
> this
> > >> case you have to configure 256 static routes!) or you were not allowed
> to
> > >> use static routes, then you could configure a separate major network
> with a
> > >> /24 mask in OSPF domain, say, 192.168.1.0/24 and redistribute it into
> IGRP.
> > >> >From the IGRP router, configure this network to be your
> default-network to
> > >> let you reach the OSPF 172.16.x.x/20 networks.
> > >>
> > >> If you are now allowed to use either static or IGRP default-network,
> then
> > >> you're stuck.
> > >>
> > >> Walter
> > >>
> > >> -----Original Message-----
> > >> From: Michel GASPARD [mailto:mgaspard@cisco.com]
> > >> Sent: Wednesday, April 18, 2001 8:12 AM
> > >> To: Alejandro Cadarso
> > >> Cc: ccielab
> > >> Subject: Re: Redistributing OSPF /22 to IGRP /24, same mayor network
> > >>
> > >> Alejandro,
> > >>
> > >> Did you already tried the "area x range" command?
> > >>
> > >> Regards,
> > >>
> > >> Michel
> > >>
> > >> Alejandro Cadarso wrote:
> > >>
> > >>> I'm playing with the following scenario and was unable to imagine how
> > >>> can I get 172.16.24.0/22 redistributed from ospf to igrp for r2
> > >>> inserting it in its routing table.
> > >>>
> > >>> Any suggestions will be appreciated. Of course neither Default routing
> > >>> nor static are allowed.
> > >>>
> > >>> ospf igrp loop0
> > >>> -------------r1------------------r2----172.16.6.0/24
> > >>>
> > >>> 172.16.24.0/22 172.16.36.0/24
> > >>> **Please read:http://www.groupstudy.com/list/posting.html
> > >>
> > >> **Please read:http://www.groupstudy.com/list/posting.html
> > >> **Please read:http://www.groupstudy.com/list/posting.html
> > >
> > > **Please read:http://www.groupstudy.com/list/posting.html
> > **Please read:http://www.groupstudy.com/list/posting.html
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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