RD1's routing table will not contain an OSPF route for the 10.10.10.0/24 network because it never receives an ospf route for the 10.10.10.0/24 network . RD1 is redistributing the RIP route into ospf advertising to all the OSPF routers use me to get to 10.10.10.0/24.
Query 2 :
You are correct the protocol with the lowest AD will win . So when RD2 recieves the OSPF E2 route with A.D of 110 he replaces the RIP route with the superior OSPF route . At this point RD2 no longer has a RIP route for 10.10.10.0/24 in its routing table , so even with redistribution configured the RD2 has no RIP route for 10.10.10.0/24 it now has the OSPF route .
A condition of redistribution is the route must be in the routing table
Hope i helped ?
When you do redistribution from the RD1 router, unless this router receives the same route from other OSPF router it will not be confused about the 10.10.10.0/24 route the was redistributed by him. On the second part, if RD2 redistribute the same 10.10.10.0/24 route this will break the sub-optimal routing problems that were caused earlier by RD1 redistribution, so in this case RD2 will save the RD1 redistributed 10.10.10.0/24 route as an alternate route inside it's LSDB.
Hello Babasdad and Elvin,
Thank you all for your reply. I am clear about query 1 now. Further clarification on Query 2 is needed though.
From babasdad, it is confirmed that, to reach 10.10.10.0/24 in RIP domain on the left, RD2 will use OSPF E2 route originated from RD1 to replace its own existing RIP route in routing table. Thus, OSPF E2 route will be the only route entry for 10.10.10.0/24
From Elvin, it is indicated that RD2 will save the RD1 redistributed 10.10.10.0/24 route as an alternate route inside it's LSDB. Here, alternate route, does it mean OSPF E2 route will not be the only route entry for subnet 10.10.10.0/24 ?
Further clarify is grateful.