![if ABR and ASBR both are the same in OSPF,what might be reason to use NSSA? - Network Engineering Stack Exchange if ABR and ASBR both are the same in OSPF,what might be reason to use NSSA? - Network Engineering Stack Exchange](https://i.stack.imgur.com/UDHvb.png)
if ABR and ASBR both are the same in OSPF,what might be reason to use NSSA? - Network Engineering Stack Exchange
![19.0 APPENDIX A: Link-State Database Synchronization In the above diagram, routers on the same segment go through a series of states before forming a successful adjacency. The neighbor and DR election are done via the Hello protocol. Whenever a ... 19.0 APPENDIX A: Link-State Database Synchronization In the above diagram, routers on the same segment go through a series of states before forming a successful adjacency. The neighbor and DR election are done via the Hello protocol. Whenever a ...](http://staff.ustc.edu.cn/~james/cisco/OSPF/images/spf26.gif)
19.0 APPENDIX A: Link-State Database Synchronization In the above diagram, routers on the same segment go through a series of states before forming a successful adjacency. The neighbor and DR election are done via the Hello protocol. Whenever a ...
![How OSPF Protocol Works & Basic Concepts: OSPF Neighbor, Topology & Routing Table, OSPF Areas & Router Roles, Theory & Overview How OSPF Protocol Works & Basic Concepts: OSPF Neighbor, Topology & Routing Table, OSPF Areas & Router Roles, Theory & Overview](http://www.firewall.cx/images/stories/ospf-operation-basic-advanced-concepts-ospf-areas-roles-theory-overview1.png)