First of all, no matter how many OSPF routing processes running on
the router, there is only one IP routing table. If you understand the
differenece
between routed and routing protocols, the question is clear.Routed protocols
like IP uses only one routing table to foward traffic. If for a single
routed protocol
there are multiple routing table, which one IP need to use?
OSPF processes keep seperate topology and adjacency databases.
And based on those databases, use routing algorithm inject routing entries into
the routing table.
Different processes the same router run in the ship-in-the-night
mode. Everything is separated. Redistribution is required to pass
external routes between 2 processes.
Don't waste the 7th cup of cokee. Give it to me.
I never heard about people talking about how to understand behaviors of
programmed devices like routers etc. My experience is to understand
them from the programmer's point of view. You got to know how those
cisco software engineers implement protocols and standards. There are
a lot common senses can be used if you have ever worked as a system/
software engineer for a couple years.
Jim Xie.
At 10:48 AM 06/08/2000 -0500, McMasters, Eric wrote:
>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?
>Will they maintain separate routing tables?
>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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