RE: How route redistribution EXACTLY works --- need confirmation

From: Chua, Parry (Parry.Chua@xxxxxxxxxx)
Date: Thu Feb 14 2002 - 21:55:20 GMT-3

   
I guess James is refer to routes that learn from arouting protocol but
not in routing table
because of AD value( eg debug rip get 10 routes, 7 route in routing
table and redistriute rip to another routing protocol, now 10 routes or
7 routes get redistributed to other protocol) ?

Perhaps once can think about it and test it out...

Parry Chua

-----Original Message-----
From: Lab Candidate [mailto:labccie@yahoo.com]
Sent: Friday, February 15, 2002 2:48 AM
To: Xu, James; ccielab@groupstudy.com
Subject: Re: How route redistribution EXACTLY works --- need
confirmation

James,

I don't think there's such a thing as RIP route database.
The RIP process will pick up routes directly from the
routing table, whereas ospf picks from its database. 

---

--- "Xu, James" <james.xu@eds.com> wrote:
> All:
>
> It has been and still puzzling me how a routing process pick routes
and
> redistribute them into another routing process and vice versa? As an
> example, mutual redistribution between RIP and OSPF in a router:
>
> Here is my experience and explanation:
>
> 1). The RIP process picks all RIP routes inside its database, and
> redistributes these routes into OSPF routing process.
> 2). OSPF process picks all OSPF routes in the OSPF database, and
> redistributes these routes into RIP routing process.
>
> During the redistribution, the split-horizon rule appies, meaning the
newly
> redistributed routes from RIP into OSPF will not be redistributed back
into
> RIP right away, and vice versa.
>
> Any input are appreciated, especially some links for this mechnism.
>
> James

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