Do Not Discover Objects

In NNMi, there are three ways that you can configure NNMi to disregard certain objects:

• On the Communication Configuration form, you can turn off ICMP communication, SNMP communication, or both at different levels: globally, for communication regions, or for specific hostnames or IP addresses.
• On the Discovery Configuration form, you can set up an auto-discovery rule that instructs NNMi to never gather hints from certain IP addresses or SNMP system object IDs. Nodes matching the criteria still appear on the map and in the database, but spiral discovery does not extend to the neighboring devices beyond those IP addresses or object types.
• On the Discovery Configuration form, you can set up an auto-discovery rule that instructs NNMi to exclude specific IP address ranges, IP addresses, or both from the database. Spiral discovery does not display those addresses on any node’s list of addresses or use those addresses when establishing connections between devices, so NNMi never monitors the health of those addresses.

• On the Excluded IP Addresses tab of the Discovery Configuration form, you can exclude a range of IP addresses from being discovered by configuring an excluded IP addresses filter.

  If all of a node’s IP addresses are entered into the Excluded IP Addresses list after that node was already discovered, NNMi does not delete the node. In addition, NNMi does not delete the entire history of a node unless the NNMi administrator intentionally deletes the node from the NNMi database.

  Note If you exclude an IP address range, any duplicates of addresses in static Network Address Translation (NAT), dynamic Network Address Translation (NAT), or Port Address Translation (PAT) areas of your network management domain are also excluded.
  
  NNMi uses tenancy to support networks with overlapping address domains. If you have such networks, put the overlapping address domains into different tenants (this is done using seeded discovery). See the NNMi help for more information.

• On the Excluded Interfaces tab of the Discovery Configuration form, you can exclude a certain type of interface from the discovery process by selecting an Interface Group. See the NNMi help for more information.