Discovered same host name from different IPs

[Amit39]

Hi,

While performing network discovery (core IP switches) for 2 different target IPs, I can found same host name gets added/updated under same IP Switch CMDB table.

Any specific reason why this is being detected same host name for different IPs.

Also how this can be fixed as it's create duplicate entries.

Thank you.

[Hitoshi Ozawa]

If a device has multiple ip addresses, a ci may be created for each ip address if property glide.discovery.enforce_ip_sync to false .

https://docs.servicenow.com/bundle/orlando-it-operations-management/page/product/discovery/reference...

[robertgeen]

The reason this is occurring is because out of the box the name returned from DNS will be taken over what is discovered at the host level. You can change this by going into discovery properties and overriding the following properties:

Because different IPs often have different hostnames (e.g. A VIP) this will cause new CIs to create if you have hostname at a higher level in the identification rules then say serial number. If you change the properties I mentioned above it should help with this but just note in SNMP world if they don't have hostnames set on the network devices properly you may run into some issues so make sure you test well.