From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Tue Feb 27 2007 - 16:42:36 ART
Basic route redistribution on a single router is a two step process. The
first step is to bring in the routes from the routing table for the protocol
being redistributed (show ip route <protocol>). The second step is to bring
in the connected interfaces that the protocol is enabled on (i.e. network
statements).
When you manually redistribute connected with a route-map you are breaking
the second step that the router is doing for you automatically. This second
step was done when you redistributed, in your case, OSPF into EIGRP. You
need to match the interfaces that the router was bringing in for you
automatically in your route-map.
If you remember these two steps it will save you a lot of headaches going
forward ;-)
--Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP) bdennis@internetworkexpert.com Internetwork Expert, Inc. http://www.InternetworkExpert.com Toll Free: 877-224-8987 Direct: 775-745-6404 (Outside the US and Canada)
On 2/27/07 10:06 AM, "Todd, Douglas M." <DTODD@PARTNERS.ORG> wrote:
> Hi all: > > I have a problem with redistribution and I am hoping someone can help me > understand what is going wrong. > Basic: > If I redistribute connected in eigrp why don't my ospf networks (which are the > connected interfaces) show up in the eigrp > table when I redistribute ospf into eigrp? > > To illustrate: > > Lets say I have a eigrp and ospf configuration of the following: > ! > router eigrp 100 > redistribute connected metric 100000 20000 255 1 1500 route-map conn-eigrp > network 136.9.23.2 0.0.0.0 > no auto-summary > eigrp router-id 198.9.2.2 > redistribute ospf 1 > default-metric 10000 100 255 1 1500 > ! > router ospf 1 > router-id 198.9.2.2 > log-adjacency-changes > auto-cost reference-bandwidth 20000 > redistribute eigrp 100 metric-type 1 subnets route-map eigrp-ospf > network 136.9.245.2 0.0.0.0 area 0 > network 198.9.2.2 0.0.0.0 area 0 > distance 171 198.9.1.1 0.0.0.0 1 > > > I see within the ospf domain my loopback of 198.9.2.2 as well as the > 136.9.245.2. Now I look too see what the eigrp topology table looks like. sh > ip ei top 198.9.2.0 255.255.255.0 (since this is a /24 w/ospf network P-T-P > under the loopback). I do not see the route. Now I remove the redistributed > connected from the eigrp process. I do a sh ip ei top 198.9.2.0 255.255.255.0 > and the route is there now. > > My question, why is eigrp blocking the redistributed route only when I have > redistributed connected with the route-map. If I remove the route-map I see > the > route, but it's not coming from the ospf process, but from the redistributed > process. If I remove the redist connected I see the route, but this is not > what > I want. > > The system is filtering where it shouldn't, it's filting routes coming from > the > ospf process AND the connected. > > Ideas? > > Douglas Todd > Partners HealthCare, Inc. > Network Engineering East > Master Network Engineer > Charlestown Navy Yard > Building 149 (MGH East) > 13th Street > Charlestown, MA 02129 > > > > > > > The information transmitted in this electronic communication is intended only > for the person or entity to whom it is addressed and may contain confidential > and/or privileged material. Any review, retransmission, dissemination or other > use of or taking of any action in reliance upon this information by persons or > entities other than the intended recipient is prohibited. If you received this > information in error, please contact the Compliance HelpLine at 800-856-1983 > and properly dispose of this information. > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
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