The daemon is CID (Client Identification daemon). This daemon is used for device detection, and it helps in Internet of Things detection.
The CID process is ‘Device Identification daemon’. It is enabled by default on all interfaces with ‘set role lan’.
Disabling the device detection, the resource CPU will be released by the CID daemon.
To check if device detection is enabled, refer to this related KB article: Technical Tip: Enable ‘Device Detection’ to allow FortiOS to monitor networks.
To get more logs with this daemon, run the below commands:
diagnose sys top <refresh interval> <max # of lines> <iterations>
Process information:
diag sys process pidof cid
For each process, collect the outputs of:
diag sys process dump < pid >
diag sys process pstack < pid >
diag sys process trace < pid >
Debug CID:
diag deb application cid -1
diag deb console timestamp enable
diag deb enable
Leave it running for 1 minute.
diag deb reset
diag deb disable
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