OpenView Network Node Manager: Designing and Implementing an Enterprise Solution

Introduction

The management domain is the set of subnets that NNM manages. Within these subnets NNM will flex its considerable autodiscovery muscles and attempt to manage every device that passes through the discovery filter. NNM ignores subnets that are not in the management domain. That means a remote network device won’t be discovered even when the NNM system is otherwise aware of it, which it might be if a network administrator telnets to it.

Defining the management domain begins with an understanding of the communities of interest in the network. Users and the equipment they use are located in IP subnets somewhere on the network, so these subnets need to be identified. This helps determine which subnets should be included in the management ...