Whenever using Packet Tracer, you need to realize the Packet Tracker might be doing something incorrectly. That may not be the case here, but something to keep in mind.
That noted, mutual redistribution can easily be done incorrectly, so it's also possible, you have a convergence issue where the route stays in the two routing protocols because both keep getting stale information from the other. Your note about R9 seeing a shift from R6 alone to R4, R5 and R6 probably means in the first instance R9 sees the route as an internal OSPF route, and in the latter instance R9 sees the route as an external route.
What you might check, insure when EIGRP accepts routes from OSPF it doesn't advertise them back to OSPF and likewise when OSPF accepts routes from EIGRP it doesn't advertise them back to EIGRP. Using a route tag is often an easy method to identify routes and preclude giving them back to the routing protocol that they were initially accepted from
BTW, another limitation of Packet Tracer, sometimes some IOS commands are not supported.
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...