JDisc: Why are some devices not recognized?

JDisc Discovery classifies a device as an "Unidentified Device" when the IP address responds on the network but none of the protocols used were able to gather enough information to identify the device.

Common causes

1. Missing or incorrect credentials

The most common cause. Each device type requires specific protocols and credentials:

Device type	Required protocol	Credentials
Windows computers	WMI	Administrative WMI credentials
Linux / Unix / macOS	SSH	SSH login credentials
Network devices (switches, routers, printers)	SNMP	SNMP community strings (v1/v2c) or SNMPv3 credentials
Virtualization	VMware/Nutanix API	API credentials

Without valid credentials for the respective protocol, JDisc cannot identify the device — it will then appear as an "Unidentified Device".

2. Protocol disabled on the target device

SNMP agent is not running on the network device
SSH/Telnet is not enabled on the Linux server
WMI service is disabled on the Windows machine

3. Firewall blocking access

WMI uses DCOM/DCE-RPC — frequently blocked by firewalls
SNMP traffic between the scanner and the target device is being filtered
SSH port is not reachable

4. Device not supported by JDisc (rare)

In rare cases, the device is not included in JDisc's internal identification tables. This mainly affects:

New hardware models without existing recognition rules
Devices discovered only via mDNS or UPnP

Solution: Create a Support ZIP

If a device is not recognized despite correct credentials, a Device Support ZIP can be created from within JDisc:

Select the affected device in a JDisc report
Right-click > "Create Support ZIP"
Optionally add a problem description
Send the ZIP file to support@jdisc.com

The Support ZIP contains all the information the manufacturer needs to support the device in future versions.

Importing unidentified devices into i-doit

By default, "Unidentified Devices" are not imported into i-doit. If required:

From i-doit v36 onwards (JDisc Connector Add-on):

JDisc Connector Add-on

The new JDisc Connector Add-on provides a Device List showing all discovered devices including their sync status. Sync Profiles control which JDisc device types are mapped to which i-doit object types. Unmapped device types will not be imported.

Older versions (before v36):

In the import profile under Administration > Import & Interfaces > JDISC > Profiles, enable the option "Import unidentified devices".

Note

"Unidentified Devices" do not count toward the JDisc license. They can safely remain in the JDisc database until the recognition issue is resolved.

Detailed documentation: JDisc Connector Add-on | JDisc Discovery (classic)