I just started learning cisco and ospf and have some questions on they way it works and what should be done.
I have a GNS3 network that i built based on this diagram that i found:
I have adjencecies with all routers, and i have assigned loopback addresses to all routersas well, X.X.X.X (X = Router #) but what i can't understand is the following:
1. For router 3, what area would i add the loopback network to? Area 0 or Area 123?
2. How can Router 4 get the loopback network of Router 1 without adding a static route
3. Do directly connected interfaces get distributed into OSPF automatically without me having to put network statments, because thats what seemed to happen, only without the loopback networks?
4. In this particular diagram, how would i add default gateways, i know i can add default-information originate, but what i can understand is where would it distribute it to, meaning if i had a default gateway on router 4 to router 7, how would router 6 know what its default gateway should be?
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When moving from OSPFv2 to OSPFv3, there are many changes in the format of the LSAs Type, but the most known changes are: IP prefix informations are no longer carried in Type-1 LSA and Type-2 LSA, new LSAs Type 8 and 9 are added to carry these prefixes.