Cisco Catalyst 2960 Series, Configuration Manual

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This error means that the event specification ID could not be matched when the event was being registered
or that an event detector internal event structure is corrupt.
(_cerr_sub_err = 12) FH_ENOSUCHEID (unknown event ID)
This error means that the event ID could not be matched when the event was being registered or that an event
detector internal event structure is corrupt.
(_cerr_sub_err = 22) FH_ENULLPTR (event detector internal error - ptr is null)
This error means that an internal EEM event detector pointer was null when it should have contained a value.
(_cerr_sub_err = 54) FH_EFDUNAVAIL (connection to event detector unavailable)
This error means that the event detector was unavailable.
(_cerr_sub_err = 56) FH_EFDCONNERR (event detector connection error)
This error means that the EEM event detector that handles this request is not available.
unregister_counter
Unregisters a counter. This Tcl command extension is used by a counter publisher to unregister a counter that
was previously registered with the
register_counter Tcl command extension.
Syntax
unregister_counter event_id ? event_spec_id ?
Arguments
(Mandatory) Counter event ID returned by the
register_counter
command extension. Must be an
integer between 0 and 4294967295, inclusive.
event_id
(Mandatory) Counter event specification ID for the
specified counter returned by the
register_counter command extension. Must be an
integer between 0 and 4294967295, inclusive.
event_spec_id
Result String
None
Set _cerrno
Yes
(_cerr_sub_err = 2) FH_ESYSERR (generic/unknown error from OS/system)
This error means that the operating system reported an error. The POSIX errno value that is reported with the
error should be used to determine the cause of the operating system error.
(_cerr_sub_err = 9) FH_EMEMORY (insufficient memory for request)
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
2020
unregister_counter