Package ospf
The XML API OSS interface uses the ospf package to configure the OSPF
routing protocol. OSPF is a hierarchical link state protocol. OSPF is an IGP used
within large ASs. OSPF routers exchange the state, cost, and other relevant interface
information with neighbors once the neighbors are discovered. The information
exchange enables all participating routers to establish a network topology map. Each
router applies the Dijkstra algorithm to calculate the shortest path to each destination
in the network. The resulting OSPF forwarding table is submitted to the routing table
manager to calculate the routing table.
Because OSPF is hierarchical, routers are configured in logical groups called areas.
The topology of each area is hidden from routers outside the area, which limits
protocol traffic and routing table sizes. There are two main types of areas:
- backbone area
- standard area