Please take a look at my network. I have the following questions. I would love any suggestions to reconfiguring the ospf domain as this is my weakness.
1. Should I put all connecting interfaces into area 0?
For example I have 10.100.10.33 and 10.100.10.34 in area 20, should this be in area 0?
2. Area 10 and 20 are setup as NSSA and are summarizing routes (redistributed connected subnets) into ospf. Would I get any benefit not using stub or nssa?
3. On Core 1, I am seeing Distro-10 routes advertised as N2 and on Core 2, I am seeing routes from Distro-10 advertised as E2, do you know why? Shouldn't they both advertise as N2?
4. What do I need to do to be able to see 2 equal-cost paths from Distro-10 to Distro-20? If I remove nssa, is it still possible to see 2 equal-path routes over both core1 and core2?
Any help would be greatly appreciated.