From: Baety Wayne SrA 18 CS/SCBX (Wayne.Baety@kadena.af.mil)
Date: Tue Oct 01 2002 - 21:25:57 GMT-3
Can't quite see the problem with your partial discription, but I'm wondering
if you've tried using longer prefixes, such as a host route. Longer
prefixes will always be used over shorter one's regardless of them being
intra-area or inter-area.
WAYNE A. BAETY, SRA, MCSE, USAF
18th Communications Squadron
DSN: 634-9927
Commercial: 011 81 611 734 9927
-----Original Message-----
From: Jay [mailto:ccienxtyear@hotmail.com]
Sent: Wednesday, October 02, 2002 5:52 AM
To: ccielab@groupstudy.com
Subject: OSPF riddle -how to manipulate the OSPF prefer inter area over
intra area
Folks,
I have attached a topolgy that I am working on for simplicity, heres the =
problem - I am trying to get a OSPF setup done and running into a few issues
with = the OSPF route selction process of preferring intra area over inter
area = routes. the requirement is that..The ISDN link between R2 and R5 shd
be = acctive only when the FR cloud is down. I am using OSPF demand circuit
= ..Since R5 is now part of Area 1 the loopbacks on R2 and R4 are now seen =
as intra area routes and the ISDN route is prefferrd over the ethernet =
route. I tried to use the distance command and with one and then with = two
ospf process. Also an intersting thing here is that the External = routes
for RIP and EIGRP are also learnt through the BRI even after = canging the
redistributed route type to E1 to include internal cost. I = am not if I am
missing something here
R3 is connected via Ethernet to the Area 0. I forgot to put that on the =
drawing. My configurations are simple..partial configs
R5
router ospf 1
network 150.35.15.0 0.0.0.255 area 0
network 50.1.1.0 0.0.0.255 area 1
network 5.5.5.0 0.0.0.255 are 0
router-id 5.5.5.5
redistribute eigrp 1 subnets route-map eigrp2ospf
R2
router ospf 1
network 150.35.24.0 0.0.0.244 are 1
network 50.1.1.0 0.0.0.255 are 1
network 2.2.2.0 0.0.0.255 are 1
redisribute rip subnets route-map rip2ospf
Interface bri 0/0
ip add 50.1.1.2 255.255.255.0
ip ospf demand circuit
ip ospf cost 1500
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