From: Brad Hedlund (BHedlund@xxxxxxxxxxxxxxxxxxx)
Date: Sun Jan 09 2000 - 16:32:32 GMT-3
Brain,
Your point is a good one, however I think Darrel has already preempted that
issue with
'summary-address 150.100.5.0 255.255.255.0' on R2, as you can see in his
configurations below.
This will summarize routes going into and out of an ASBR such as R2. Thus
R3 *should* be seeing a 150.100.5.0/24 route. ?!
This scenario should work without an 'ip default-network' on R1.
-Brad
>
> Darrel,
>
> As I am sure you are aware, the problem lies in the fact that
> the routes to
> your loopback interfaces not get redistributed to R3 due to
> the classful
> nature of IGRP. You will see all the /24 routes because all
> the interfaces
> in your IGRP routing processes possess a /24 mask. Your problem is
> reachability from R3 w/o the use of static routes.
>
> I would say that your best bet is to create another loopback on R1 and
> include it in the OSPF routing process. Then on R2 use the ip
> default-network command for the route you just added. Make
> sure that you
> use the classful address with this command - don't include a
> subnet or it
> will not advertise properly.
>
> You should then see the route appear as a candidate default
> on R2 and and
> this will be propogated to R3. Also make sure that ip
> classless is enabled
> on R3.
>
> Liberal use of debug ip packet is great to see what is happening here.
>
> Regards,
>
> Brian Best
> > -----Original Message-----
> > From: Darrel Hinshaw [mailto:dhinshaw@istrength.net]
> > Sent: Thursday, January 06, 2000 9:30 PM
> > To: ccielab@groupstudy.com
> > Subject: VLSM ---> FLSM or OSPF --> IGRP
> >
> >
> > All:
> >
> >
> > First I'm sorry for making this so long.
> >
> >
> >
> > Great deal of difficulty here. The usual parameter of NO
> > static routes of
> > any kind are in effect.
> >
> >
> > R1-->S0------(OSPF
> 0)------S0<--R2-->E0------(IGRP)------E0<--R3-->E1
> >
> > Interface Addresses:
> > R1/S0: 150.100.4.5/24 OSPF Area 0
> > R1/L0: 150.100.5.5/30 OSPF Area 0
> > R2/S0: 150.100.4.3/24 OSPF Area 0
> > R2/L0: 150.100.5.9/30 OSPF Area 0
> > R2/E0: 150.100.128.1/24 IGRP
> > R3/E0: 150.100.128.2/24 IGRP
> > R3/E1: 150.100.129.1/24 IGRP
> >
> > Problem: How do I distribute OSPF into IGRP on R2? I have
> > configured but I
> > am unable to get any 150.100.5.x addresses to show up in R3's
> > routing table.
> > Below are the relevant Configs.
> >
> > Router 1:
> >
> > router ospf 5
> > network 150.100.4.0 0.0.0.255 area 0
> > network 150.100.5.5 0.0.0.0 area 0
> > network 150.100.14.0 0.0.0.255 area 3
> > area 0 authentication message-digest
> > area 3 range 150.100.14.0 255.255.255.0
> > area 3 virtual-link 150.100.3.1
> >
> > Router 2:
> >
> > router ospf 5
> > summary-address 150.100.5.0 255.255.255.0
> > redistribute igrp 5 subnets route-map igrpn2ospf
> > network 150.100.4.0 0.0.0.255 area 0
> > network 150.100.5.9 0.0.0.0 area 0
> > area 0 authentication message-digest
> > area 0 range 150.100.4.0 255.255.255.0
> > area 0 range 150.100.5.0 255.255.255.0
> >
> > router igrp 5
> > redistribute ospf 5 metric 10000 10 255 1 1500 route-map ospfn2igrp
> > passive-interface Loopback0
> > passive-interface Serial0
> > passive-interface Serial0.110
> > network 150.100.0.0
> > network 0.0.0.0
> >
> > ip classless
> >
> > access-list 1 permit 150.100.128.0 0.0.127.255
> > access-list 2 deny 150.100.128.0 0.0.127.255
> > access-list 2 permit any
> > !
> > route-map igrpn2ospf permit 10
> > match ip address 1
> > !
> > route-map ospfn2igrp permit 10
> > match ip address 2
> >
> > Router 3:
> >
> > router igrp 5
> > network 150.100.0.0
> >
> > ip classless
> >
> >
> >
> > ANY help would be appreciated.
> >
> >
> > Regards,
> >
> > Darrel Hinshaw
> >
> >
> >
> > PS If you have actually read this far . . . THANKS.
> >
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