IP Address Discovery not populating CMDB IP Address Table

[Marcin Witoslaw]

Hello All ,

I have a question regarding Discovery.

When Discovery schedule is triggered with Discover field value as IP Addresses it does not populate cmdb_ci_ip_address table with IP addresses found after this discovery. IP Address table is populated only when CI Discovery is performed. Is that a proper behaviour ?

Table that stores any data after IP Discovery is [discovery_device_history].

My final request is to compare results after IP discovery and CI Discovery for the same IP ranges.Wher can this be done  if possible ?

Kind Regards

Marcin

[PritamG · Accepted solution]

Yes, this is the expected behavior. Only discovers and stores IP addresses in the [discovery_device_history] table and does not populate the cmdb_ci_ip_address table.

Performs deeper discovery and populates the cmdb_ci_ip_address table with the discovered IPs linked to corresponding CIs.

[PritamG · Accepted solution]

Yes, this is the expected behavior. Only discovers and stores IP addresses in the [discovery_device_history] table and does not populate the cmdb_ci_ip_address table.

Performs deeper discovery and populates the cmdb_ci_ip_address table with the discovered IPs linked to corresponding CIs.

[Community Alums]

Hi @Marcin Witoslaw 

can you help me understand, what is ci discovery in this context? 

regards, 

srinija

[Marcin Witoslaw]

Hello srinija_itom

Thank you for your response. 

CI discovery is basically Discovery with discover Configuration Items.

I have found a ServiceNow doc :https://www.servicenow.com/docs/bundle/xanadu-it-operations-management/page/product/discovery/refere...

which states : The results of IP address scans include slightly different information than the results of a CI scan. Since there is no CMDB activity associated with the IP address scan, the Completed activity column displays only the classification status.

Is there any other way to compare devices discovered by the IP Discovery to CI discovery apart from discovery_device_history table ?

[Community Alums · Accepted solution]

Hi @Marcin Witoslaw , 

Yes, this a expected behavior. IP Address Discovery is used to know what type of devices are in a particular given ip range. this type of discovery doesn't update the CMDB it only perform port scanning and credential testing. Where as CI Discovery updates the CMDB and ip address tables. 

For example, In discovery process we have 4 steps 

Step 1 Scanning

Step 2 Classification

Step 3 Identification

Step 4 Exploration 

IP Address scanning performs step 1 and step 2 

Configuration Item Discovery Performs Step 1,2 3 and 4. 

In order to find the differences between IP Address and CI Discovery wont give any results because IP Address discovery is a subset of CI discovery. 

If this solution resolved your issue, please mark it as helpful or accept it as the solution.

Regards, 

Srinija