Re: [OSL | CCIE_RS] Redistribute connected

[Michael Senno]

In regards to this message, I posted a similar question on the other message board (as of yet unresponded to), but it appears that sometimes connected networks are redistributed between protocols and sometimes they are not. I have not documented every instance I’ve run across this, but it appears that redistribution from RIP or OSPF usually includes all the connected networks that are included in RIP/OSPF, but EIGRP does not appear. Is there a more detailed examination of this somewhere? When I get some time I will try to reproduce on some test equipment, but it just does not seem to be consistent…or at least consistent across protocols.   Scott Morris smorris at ipexpert.com Tue Jul 11 12:13:30 EDT 2006   Often it depends on what your layout looks like and what your current IGP databases look like.  When you redistribute between protocols, in order for a route to pass through redistribution, it has to be the best path in the RIB of the protocol it's coming from AND it has to be in the routing table from that RIB.  If you have an interface that has been added into OSPF on a router, when you look at "show ip route" it will be seen as connected. Therefore that particular link/network will not be redistributed into EIGRP or RIP or whatever you're running. So "redistribute connected" is often needed to fix this.  This is discovered through some quick verifications on different routers to assure that all routes as seen as expected. HTH, Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE #153, CISSP, et al. CCSI/JNCI-M/JNCI-J IPExpert VP - Curriculum Development IPExpert Sr. Technical Instructor smorris at ipexpert.com http://www.ipexpert.com       _____    From: ccie_rs-bounces at onlinestudylist.com [mailto:ccie_rs-bounces at onlinestudylist.com] On Behalf Of Mohamed Farouk Sent: Tuesday, July 11, 2006 5:05 AM To: ccie_rs at onlinestudylist.com Subject: [OSL | CCIE_RS] Rdistribute connected     Hi I have a question which is very critical to me as i really need to understand. Why in every routing protocol, the redistribute connected is done with all of the subnets connected? Although some of this subnets is advertised through other routng protocol on the same router. Is there a technical obligation for this? or does it help in other kinds of redistribution? I feel that there is something hidden in this issue? Thanks/Regards -------------- next part -------------- An HTML attachment was scrubbed... URL: http://onlinestudylist.com/pipermail/ccie_rs/attachments/20060711/c36bce23/attachment.html size=2 width="100%" align=center>     Michael J. Senno   [EMAIL PROTECTED] IM: [EMAIL PROTECTED] mobile: 917-273-1169   Add me to your address book... Want a signature like this?