Abstract: A method, apparatus, and computer program product for discovering network paths between network devices in a distance-vector network are provided. The method may include providing a node model of network devices in a distance-vector network. The node model may include a network address corresponding to a network device. The network address may be used to query the network device for routing information. This routing information may be used to identify another network address corresponding to a second network device, and to identify a path from the first network device to the second network device. These devices and the path therebetween may be mapped in the node model. Finally, the second network device may be queried for subsequent routing information to identify and map subsequent devices and paths.

Abstract: A computer implemented method, apparatus, and computer usable program code for network fault isolation. A plurality of real-time path traces is performed between the sender and the receiver to form a plurality of trace paths in response to receiving a request for the network fault isolation between a sender and a receiver. A determination is made as to whether an asymmetry is present between the sender and the receiver from the plurality of trace paths. A set of routers is identified with each trace path in the plurality of trace paths to form a plurality of identified routers. Each event stored is identified for the plurality of identified routers to form a set of identified events.

Abstract: A system and associated method for building a network model of a network for a network management application. The network management application discovering a router discovers peering routers using network reachability information in a routing protocol. Undiscoverable peering routers are created within the network model by the network management application from network reachability information. Also a local subnet for the router, a remote subnet for a peer, a remote interface between the router and the peer also may be created to model the network in a network management application from information from the routing protocol.

Abstract: A system and associated method for building a network model of a network for a network management application. The network management application discovering a router discovers peering routers using network reachability information in a routing protocol. Undiscoverable peering routers are created within the network model by the network management application from network reachability information. Also a local subnet for the router, a remote subnet for a peer, a remote interface between the router and the peer also may be created to model the network in a network management application from information from the routing protocol.

Abstract: A network management method and system. The method includes identifying and accessing a network device. A set of software loopback interfaces configured for the network device is retrieved. A first set of Internet protocol (IP) addresses associated the set of software loopback interfaces is retrieved. A second set of IP addresses associated with the first set of IP addresses is retrieved. A set of next-hop interfaces is retrieved. A network management topology model based on the network device, the set of software loopback interfaces, the first set of IP addresses, the second set of IP addresses, and the set of next-hop interfaces is generated. The network management topology model indicates that each IP address of the second set of IP addresses that is adjacent to an IP address of the first set of IP addresses is reachable via an associated next-hop interface of the set of next-hop interfaces.

Abstract: A computer implemented method, apparatus, and computer usable program code for network fault isolation. A plurality of real-time path traces is performed between the sender and the receiver to form a plurality of trace paths in response to receiving a request for the network fault isolation between a sender and a receiver. A determination is made as to whether an asymmetry is present between the sender and the receiver from the plurality of trace paths. A set of routers is identified with each trace path in the plurality of trace paths to form a plurality of identified routers. Each event stored is identified for the plurality of identified routers to form a set of identified events.