From: Wang Dehong-DWANG1 (Dehong.Wang@motorola.com)
Date: Wed Sep 22 2004 - 13:29:34 GMT-3
I knew that this has been posted before.. but would like to ask it again.. Here is the scenario.
R4 ------- (area 4 ) -----R3---( serial link, area 2 )---------- R2--------(serial link, area 3) ----------- R1------- (area 0)
R3 serial link IP: 172.16.2.3
R1 serial link IP: 172.16.3.1
R3 Router:
========
int tunne1
ip add 172.16.15.3 255.255.255.0
tunnel destination 172.16.3.1
tunnel source 172.16.2.3
R1 Router:
=========
int tunn 1
ip add 172.16.15.1 255.255.255.0
tunn destination 172.16.2.3
tunn source 172.16.3.1
R1 connects to area 0, a virtual link was also created between R1 and R2 to learn the routes from area 2. I also built a tunnel between R3 and R1 through area 0 so all the routes in area 4 can be learned as well. I created additional interface on both R1 and R3 and then put them under ospf area 0. It hit the recursive routing.. R3 sees a directly route through 172.16.15.0 subnets and then started to delete routes learned through serial interface, which brought the tunnel interface down..
I am thinking of manipulating the distance which make some routes prefer serial link and some use tunnel, but do not know exactly how.. Your helps are highly appreciated..
thanks in advance.
- Dehong
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