From: san (san.study@gmail.com)
Date: Thu May 11 2006 - 01:04:42 ART
Dave,
I am seeing a different behaviour for RIP.
Connected Interfaces of RIP network gets redistributed to OSPF .....when
"redistribute rip subnets" under ospf.
Connected Interfaces are present in RIP database & not in Routing table as
connected.
Is this an exception for RIP ?
On 5/10/06, Schulz, Dave <DSchulz@dpsciences.com> wrote:
>
> Zoen -
>
> There is a lot to discuss here, but one item that helped clear up
> redistribution for me, was understanding what is redistributed from
> where (RIB or database). When you redistribute from one protocol to
> another, it will look in the routing table (not the database) to
> determine which routes to redistribute. So, when you redistribute RIP
> into OSPF, it is going to pull the routes that are in the routing table
> that are learned by RIP, if the route was already learned by EIGRP
> (having a better admin distance, then it will not get redistributed.
> So, if you redistribute from RIP to OSPF to EIGRP....the route that is
> in the route table is redistributed from that routing protocol, even
> though they are in the database. And, you will not have the same route
> in the routing table from three different protocols.
>
>
> Dave Schulz,
> Email: dschulz@dpsciences.com
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Koen Zeilstra
> Sent: Wednesday, May 10, 2006 7:49 AM
> To: ccielab@groupstudy.com
> Subject: redistributing localy injected routes [20060510]
>
> Hi Group,
>
> I have 3 questions regarding redistribution.
>
> Q1.
>
> 2 steps:
> 1. Make an interface part of an IGP via the network statement
> 2. Redistribute that IGP into another IGP via another link.
>
> In some occasions this will work. For example RIP -> OSPF. Because rip
> sees the routes part of the network statement as redistributed from
> connected.
>
> I have seen it working for OSPF -> EIGRP as well.
>
> Why doesn't it work for others? Ie. what rule prohibits this.
>
>
> Q2.
>
> Why doesn't a redistribute RIP to OSPF to EIGRP on the same router work?
>
> Q3.
>
> This merely sums up the questions above I guess. When redistributing,
> does
> the redistribution process go from database to database directly or via
> the general routing table? For example does a OSPF proces redistributes
> EIGRP routes from the EIGRP topology or from the EIGRP routes in
> the routing table?
>
> thanks,
>
> Koen
>
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-- Thanks & Rgds SAN
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