Network Management
Manually entered data is deleted after a subnet scan
Manually entered changes to the data such as adding comments after Transient transition and 'Used' are deleted in the next subnet scan.
First published date
10/25/2018 5:40 PM
Last published date
7/7/2023 3:10 AM
Overview
If any IP in IPAM goes from Used > Transient > Available, all IP information is deleted by design. Manually entered changes to the data such as adding comments, etc will be removed as "Available" IP addresses do not have any data stored in them.
For the scenario that every input is deleted/changed once you hit subnet scan, that means the Polling done by IPAM shows NULL values or has different values, it will always be changed. This does not apply to Custom Properties/Fields as they are native to IPAM. Alias and Comments are considered Custom Properties/Fields.
For the scenario that every input is deleted/changed once you hit subnet scan, that means the Polling done by IPAM shows NULL values or has different values, it will always be changed. This does not apply to Custom Properties/Fields as they are native to IPAM. Alias and Comments are considered Custom Properties/Fields.
Product section
IP Address Manager
Cause
The IP address is marked as Used. If during the subnet scan the device does not respond to the pings, then IPAM will mark the device as transient as IPAM assumes that the IP address is not in use. After the Transient period, the IP address will be marked as Available.
Resolution
When a IP address does not respond during a subnet scan, IPAM will mark the address as transient even when the address is marked as used. This is an expected behaviour. If you wish to mark an IP address as in use and to have this status retained, you should mark it as "Reserved" and IPAM will not change the status.
This explains why the Data is not being retained. All the information we poll by default would be removed.
This setting allows you to not override only these properties and this only occurs for SNMP/Hostname data:
1. System Description,
2. System Name,
3. System Location,
4. System Contact,
5. Vendor (and Vendor Icon),
6. Machine Type.
7. Hostname
This explains why the Data is not being retained. All the information we poll by default would be removed.
This setting allows you to not override only these properties and this only occurs for SNMP/Hostname data:
1. System Description,
2. System Name,
3. System Location,
4. System Contact,
5. Vendor (and Vendor Icon),
6. Machine Type.
7. Hostname