Have you checked your hello and dead time intervals (sho ip ospf interfaces) to make sure they match on your participating routers??Priscilla Oppenheimer wrote: > > Hi Group Study, > > Playing with IP OSPF priority to influence which router became > the > Designated Router (DR) caused routing problems for me in a > recent bout with > a lab exercise. Can anyone help me understand if I did > something wrong? > > I have 2 routers on an Ethernet LAN. Both of them also have WAN > connections > to remote sites. R1 has a Frame Relay link to the corporate > "cloud" via its > S0 port. S0 is configured as "ip ospf network point-to-point." > > R2 has an ISDN link to yet another router, R3. This link is > configured as > an OSPF point-to-point demand circuit. > > R1 and R2 are connected via an Ethernet switch. My goal was to > make sure R1 > became the DR on Ethernet. Both routers have loopbacks, but > R2's is higher, > so to make sure R2 did not become the DR, I configured it with: > > ip ospf priority 0 > > R1 then did indeed become the DR on the Ethernet LAN because it > was using > the default priority 1. > > Now, finally to the question...... On the other side of the > ISDN and across > the Frame Relay cloud, I couldn't see the Ethernet LAN in the > routing > table. Routers formed adjacencies correctly and could reach > most networks, > but not that darn Ethernet LAN. R1 and R2 on the Ethernet LAN > formed an > adjacency and could see the rest of the internetwork. > > Could I have broken something by playing with the priority?? > > Thanks for your help. > > Priscilla > > > > ________________________ > > Priscilla Oppenheimer > http://www.priscilla.com > >
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