From: clingamgunta@xxxxxxxxxxxxx
Date: Thu Apr 26 2001 - 08:25:11 GMT-3
My understanding is in OSPF if you want ot insert a default route, you will hav
e
to use default-information-originate, there is no other way to inset a default
route in to OSPF domain.
Regards
Chandra
mcaplan.cs@clearstream.com on 26/04/2001 12:09:06
Please respond to mcaplan.cs@clearstream.com
To: ccielab@groupstudy.com
cc: (bcc: Chandra Lingamgunta)
Subject: OSPF NSSA default routes - again
Hi,
I've searched the archives and seen a fair bit written about NSSA default
routes but I cant find an answer to my question. I have the following set up
R1--area0----R5-----area7------R7
area 7 is configd as NSSA.
I have a loop back interface configd on R7 where I point a static default
route. Config as follows
R7
router ospf 100
redistribute static subnets
network 10.1.7.7 0.0.0.0 area 7
default-information originate always
area 7 nssa default-information-originate
ip route 0.0.0.0 0.0.0.0 Loopback1
R5
router ospf 100
area 7 nssa
redistribute connected subnets
network 10.1.7.5 0.0.0.0 area 7
network 10.5.0.5 0.0.0.0 area 0
network 10.7.0.54 0.0.0.0 area 4
network 10.9.5.5 0.0.0.0 area 0
Now try as I might, R5 does not pick up the default route.
My understanding is this. R7 should be advertising an N2 default route. R5
should pick this up, insert the N2 default route into its routing table and
then advertise the default route as an E2 route. It just doesn't work. It
works the other way around when I put the "area 7 nssa
default-information-originate" on R5 as the ABR - this is similar to the
example given in Doyle pg 544. But why cant a non ABR in a NSSA advertise
the default route.
I checked the ospf database on R5 and R7 for N2 0.0.0.0 but it isn't there.
I have seen notes in this group on ospf bugs in 12.0 ios and the need to
reboot sometimes. I have tried rebooting but it doesn't fix it. I am running
12.0(16) on R5 and 11.2(26) on R7.
Any help would be appreciated
Cheers
Mark
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