OpenView Network Node Manager: Designing and Implementing an Enterprise Solution

Deciding What Devices to Export

In the previous section you saw a collection station export filter that defined only subnets and routers. The result is an Internet submap at the management station showing end-to-end connectivity in the IP sense. Subnets contain only routers and no segments, switches, bridges, or other network infrastructure. Since a large corporate network will contain hundreds of routers with thousands of interfaces and subnets, this is a sizable map. The NNM system performance may degrade if additional network devices are imported from the collection stations.

Regardless, local requirements may dictate that additional devices be visible at the collection station. A prerequisite is that the collection station discovery filter ...