A network inventory task aims to retrieve exhaustive informations from SNMP-compatible devices, such as network devices or printers, already part of the list of known assets.
This task can only be performed on devices already part of the list of known assets, either as a result of a previous network discovery task, or manually created, with proper SNMP credentials.
This task uses SNMP to retrieve various information from a device, so as to update it in GLPI:
- consumable levels and print counter on printers
- vlans definition, network topology, network ports status on network devices
The agent performing the task needs to have the network inventory module installed. Many Linux distributions ships agent modules in distinct packages, to reduce the burden of dependencies.
The agent performing the task needs network access the target devices, with proper access control: just being able to send UDP packets to a device is not enough, if this device is configured to ignore them.
The target device should be associated with proper SNMP credentials in GLPI.
As for any other server-controled task, the agent should use either managed or half-managed mode, as explained in agent usage. If the task is server-triggered, the agent must run in managed mode, and its HTTP port should be reachable from the server.
A network inventory task can be also performed without a GLPI server, allowing easier control and troubleshooting, with the fusioninventory-netinventory command-line tools. However, there is now way currently to inject the result in GLPI.