Discovery IP address configuration

Use one or more of these methods in any combination to define the network or network segment for Discovery to query.

Note: If you do not know the IP addresses in the network, run Network Discovery first to determine the IP networks. Then, convert the IP networks into IP address range sets.

IP address list

Use IP address lists to add individual addresses for Discovery to query. These addresses should not be included in any existing IP range or IP network. You can enter the IP address of the device or a host name (DNS name). If you enter a host name, it must be resolvable from the MID Server system.

IP address range

You can define arbitrary ranges of IP addresses for Discovery to query. This is a good way to include selected segments of a network or subnet. However, Discovery has no way of knowing if the IP range includes addresses for private networks or broadcast addresses and scans all the addresses in the range. If the network and broadcast addresses are included, then the results are inaccurate. For this reason, discoveries configured to detect IP networks are generally more accurate than those configured for IP address ranges. The best practice is to include only those IP addresses in your range that are reserved for manageable devices on the public network.

IP network

An IP network includes the range of available IP addresses in that network, including the network address (the lowest address in the range) and the broadcast address (the highest address in the range). An example of a class C network range is 192.168.0.0 to 192.168.0.255. In the Range Set form, this network can be entered with either of the following notations:
  • 192.168.0.0/24
  • 192.168.0.1/255.255.255.0

This notation indicates that Discovery is scanning an IP network, and Discovery does not scan the highest and lowest numbers in the range. This prevents significant errors from being introduced into the Discovery data by the broadcast address, which returns all the devices in the network, and the network address, which can add an arbitrary number of redundant devices. This built-in control makes IP networks the best method of defining which IP address ranges to query.