Technical Note: Registration Failure with 'Unable ...

FortiNAC

NOTE: FortiNAC is now named FortiNAC-F. For post-9.4 articles, see FortiNAC-F. FortiNAC is a zero-trust network access solution that provides users with enhanced visibility into the Internet of Things (IoT) devices on their enterprise networks.

Article Id 196614

Description

Registration Failure with 'Unable to Find Host' Message

Solution

Issue: Host fails registration with error message "Unable to find host".

This error typically occurs due to one of the following reasons:

Host shows as offline (grey adapter icon in Adapter or Host View).
IP address is not found.

Solution:
If host shows offline, confirm the following:

Network Sentry receives MAC Notification or Link State traps from the wired switch to which the host connects.
L2 Polls for switches and/or wireless controllers complete.

If IP address is not found:

Confirm L3 Polls complete for appropriate L3 switches.

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Technical Note: Registration Failure with 'Unable to Find Host' Message