How can I use Discovery without an IP address?

[MakotoHorioka]

I am currently doing Discovery by IP address.

However, if you want to Discovery more than a few thousand computers, it will be difficult to enter IP addresses.

So I would like to know if there is a way to do Discovery without specifying IP addresses.

[Community Alums · Accepted solution]

HI @MakotoHorioka ,

You can setup the IP address Range for that requirement.

There are three types of IP collections:

IP collection type	Description
IP address list	Use IP address lists to add individual addresses to query. These addresses are not 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 mapped to an IP address.
IP address range	You can define arbitrary ranges of IP addresses to query. This process 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. Discoveries configured to detect IP networks are more accurate than discoveries configured for IP address ranges. Only those IP addresses in your range that are reserved for manageable devices on the public network should be included. Note: To avoid any possible performance issues, limit Discovery schedules to a maximum range of /16 or no more than 65,000 IPs. You can also split the Discovery schedules into even smaller ranges of IP addresses.
IP network	You can also scan an entire IP network. An IP network includes the range of available IP addresses in that network. The scan also includes the network address (the lowest address in the range) and the broadcast address (the highest address in the range). After you run network discovery, convert the IP networks that were found into range setsfor use in discovering other devices. IP networks are represented in CIDR notation. Examples of CIDR notation include: 192.168.0.0/24 10.11.128.192/26 Discovery will not scan the network or broadcast addresses for a network. The equivalent ranges for the two networks are: 192.168.0.1 – 192.168.254 10.11.128.193 – 10.11.128.254 Significant errors are prevented and introduced into the Discovery data by the broadcast address. All devices are returned 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.

[MakotoHorioka]

Hi.@Sandeep.

Thanks for answering my question.

What I wanted to do was exactly what I wanted to do: network discovery.

And now I'm trying it on my own instance and I get this error.

Please help me.