Configuration Guide for Cisco NCS 1014, IOS XR Releases 26.x.x

OTDR scan status

Updated: June 18, 2026

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This section lists and explains all possible OTDR scan status.

This section describes and explains the various OTDR statuses that appear when using the show olc controller ots R/S/I/P otdr-status and show controller ots R/S/I/P otdr-info commands.

Table 1. OTDR scan status
Scan status	Description
Measuring	OTDR scan is currently in progress.
Data Processing	OTDR scan has completed, and the data is ready for review
Data Ready	OTDR scan is stopped by the user, when it is in progress.
Stopped	OTDR is processing data just before populating the event table.
Error	The OTDR status may occasionally enter an Error state for various unpredictable reasons. One possible cause is a timeout event, which occurs if the scan is not completed within five minutes. In such cases, no SOR files or event table is generated. It is important to note that this is a rare occurrence. You can still initiate the OTDR scan to obtain the scan results.
Waiting Span Reservation	Waiting for remote OTDR span reservation (a span reservation request has been sent but no answer is received yet or the remote node is busy). Note This status may be visible even during the non-negotiated OTDR scan that is initiated using the `force` option.
Timeout	The scan did not finish within the expected time.
Communication Failed or Communication Failed, retrying in less than x minutes	The system cannot reserve the span due to a link failure after a specified time. The scan will be retried after some time.
Local Resource Not Available	The local resource is busy after a specified time.
Span Reservation Failed or Span Reservation Failed, retrying in less than x minutes	The remote resource is busy after a specified time, and scan will be retried after sometime.
OTDR Resource Not Available, or OTDR Resource Not Available, retrying in less than x minutes	The local OTDR resource is busy, and scan will be retried after sometime.

This table explains the various OTDR scan statuses that are applicable for manual and autoscan.

Table 2. OTDR scan status applicable for manual and autoscan
Type of OTDR scan	Scan Status
Type of OTDR scan	show olc controller ots R/S/I/P otdr-status	show controller ots R/S/I/P otdr-info
Manual	NA	Measuring Data Processing Data Ready Stopped Error Waiting Span Reservation Timeout Communication Failed Local Resource Not Available Span Reservation Failed Scan Not Allowed
Autoscan	Measuring Data Processing Data Ready Stopped Error OTDR Resource Not Available, or OTDR Resource Not Available, retrying in less than x minutes Waiting Span Reservation Timeout Communication Failed or Communication Failed, retrying in less than x minutes Local Resource Not Available Span Reservation Failed or Span Reservation Failed, retrying in less than x minutes Scan Not Allowed	Measuring Data Processing Data Ready Stopped Error Waiting Span Reservation

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