Dell PowerConnect 6248 User's Guide - Page 513
OSPF, OSPF Configuration
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OSPF The Open Shortest Path First (OSPF) routing protocol is an Interior Gateway Protocol (IGP). Every OSPF router builds a shortest path tree of all the routers and networks in the domain. Routing information is propagated in Link State Update packets both periodically and in the event of network topology changes. This information is received, assimilated and stored in the OSPF databases of individual routers. An integral piece of information in the database exchange is the number and IP Addresses of the interfaces that are associated with the router. OSPF treats secondary IP Addresses as stub networks attached to the router. Hence though these networks are advertised in the OSPF routing domain, neighbor adjacencies are never established on secondary addresses. It is also important to note here that all secondary IP Addresses must be in the same area as the primary IP Address so that they get advertised by OSPF. This is always true in the case of the PowerConnect 6200 Series software implementation because the area configuration is on a per interface basis as against a per network basis. The OSPF menu page contains links to web pages that configure and display OSPF parameters and data. To display this page, click Routing →OSPF in the tree view. Following are the web pages accessible from this menu page: • OSPF Configuration • Area Configuration • Stub Area Summary • Area Range Configuration • Interface Statistics • Interface Configuration • Neighbor Table • Neighbor Configuration • Link State Database • Virtual Link Configuration • Virtual Link Summary • Route Redistribution Configuration • Route Redistribution Summary • Nonstop Forwarding OSPF Graceful Restart OSPF Configuration Use the OSPF Configuration page to enable OSPF on a router and to configure the related OSPF settings. To display the page, click Routing →OSPF →Configuration in the tree view. Configuring Routing 513