>Okay I have been looking for this answer and I still can't find it, so I am
>bringing my question to all of the OSPF guru's that reside on this list.
>
>Here is what I want to know.
>I know that you can run multiple routing processes on a single router, i.e.
>router ospf 1 and router ospf 2
>Now will the networks that are configured under the each of these processes
>know about networks in the other process, without redistributing?
No. This is deliberate.
>Will they maintain separate routing tables?
This is subtle. The OSPF processes will maintain separate
topological databases, but there is only one main routing table.
Let's say OSPF #1 produces an intra-area route 192.0.2.0/24 with
metric 100, while OSPF#2 produces an intra-area route 192.0.2.0/24
with metric 50. Also, Let's say OSPF #1 produces an inter-area
route 192.0.3.0/24 with metric 10, while OSPF#2 produces an
intra-area route 192.0.3.0/24 with metric 50. Remember that
intra-area routes are always preferred to inter-area.
The routing table will install the OSPF #1 route to 192.0.2.0/24
and the OSPF#2 route to 192.0.3.0/24. In the main routing table
display, they will both simply show with source code "O". I think,
but would have to verify, that "show ip route 192.0.2.0/24" would
reveal the process that generated the route.
>If so, will all the routes be displayed when issuing the "show ip route"
>command?
>
>I just want to know if the networks that are configured under each process
>will be logically separated on the router, or will they share the same
>routing table? I'm getting frustrated, since I can't find the answer and
>the 6 cups of coffee that I've already had aren't helping matters....I
>appreciate any and all responses, and the time that you take in reading my
>caffeine induced rants and raves..thank you!
>
>Eric L. McMasters, CCNP/CCDA
>OSSN - Sr. Network Engineer
>
>Phone: 913.859.1986
>PCS: 913.485.9734
>Fax: 913.859.1234
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