From: Osamah Shaheen (ShaheenO@maaden.com.sa)
Date: Mon Oct 13 2008 - 03:40:18 ART
I saw lot of tried in your scenario, why don't try IE book they have
good example for OSPF. :)
---------
1) I tried to use distance on the routes coming from R2, to change them
To 130, but seems the OSPF first chooses the InterArea route over intra
area, then applies the distance.
--------
This incorrect; OSPF will choose Intra-Area routes first
-----Original Message-----
From: Reza Toghraee [mailto:reza@toghraee.com]
Sent: 2008-10-13 09:31
To: Osamah Shaheen; ccielab@groupstudy.com
Subject: RE: OSPF Question, how to prefer inter area routes, over intra
area
Yes, but how to change and Control it ??
-----Original Message-----
From: Osamah Shaheen [mailto:ShaheenO@maaden.com.sa]
Sent: Monday, October 13, 2008 10:30 AM
To: Reza Toghraee; ccielab@groupstudy.com
Subject: RE: OSPF Question, how to prefer inter area routes, over intra
area
Pref. as follow:
Intra-Area
Inter-Area
E1
E2
Hth
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Reza Toghraee
Sent: 2008-10-13 09:23
To: ccielab@groupstudy.com
Subject: OSPF Question, how to prefer inter area routes, over intra area
Hello,
I'm a little confused with ospf behavior on inter area routes and
transit
areas.
Imagine this scenario.
_____ __________________________ _____
| R1| | | | R2|
|___|---| A R E A 0 |--------|___|
| | This link is a 64K | |
| |__________________________| |
| ____|______
__|__________ | |
| | | |
| AREA13 | _______| |
| | | |
| 10Mbps | | |
|____________| | A R E A 23 |
| | |
__|__ |_________________| 10Mbps BW |
| R3| | |
|___|-------|___________________________________|
R2 is advertising it Looback in OSPF AREA 0 ,with network command.
R1 will route through the AREA 0, on 64K Link to reach R2' Loopback 0.
Question 1 : how to make R1, route through R3 on Area 13, and Area 23 to
reach R2' Loopback ?
What I tried :
1) I tried to use distance on the routes coming from R2, to change them
to
130, but seems the OSPF first chooses the InterArea route over intra
area,
then applies the distance.
2) I used a distribution-list on R1 to filter the routes coming from R2.
Its
working but if the Link between R1,R3 is disconnected, then R1 cannot
reach
R2' Loopback
Question 2: R2 Advertises its Loopback with Redistribution as E1.
What I tried :
1) I tried to change the costs on 64K Link to very high. But I don't
remember it worked or not.
Waiting for your solutions.
Reza Toghraee
Blogs and organic groups at http://www.ccie.net
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