From: Albert Lu (albert_lu@optushome.com.au)
Date: Tue Oct 01 2002 - 22:03:43 GMT-3
distance ospf command isn't going to work like it would with distance vector
protocols such as rip. Since you would have to set distance on the basis of
the source of the routes, which would not be tne next hop like rip but would
be the originator of the LSA for OSPF. Distance command looks at the
router-id which can be many hops away.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
P729
Sent: Wednesday, October 02, 2002 8:37 AM
To: Jay; ccielab@groupstudy.com
Subject: Re: OSPF riddle -how to manipulate the OSPF prefer inter area
over intra area
I haven't analyzed your topology, but just focusing on this statement:
"...running into a few issues with the OSPF route selction process of
preferring intra area over inter area routes."
--you can modify the AD of each type of OSPF route independently. See the
'distance ospf' command...
Regards,
Mas Kato
https://ecardfile.com/id/mkato
----- Original Message -----
From: "Jay" <ccienxtyear@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, October 01, 2002 1:52 PM
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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