NTP/4/SOURCE_LOST

Message

NTP/4/SOURCE_LOST:System synchronization source lost. (SourceAddress=[STRING], Reason=[STRING])

Description

The source reference clock was lost.

Parameters

Parameter Name	Parameter Meaning
SourceAddress	Indicates IP address of the source reference clock, whose synchronization is lost.
Reason	Indicates the reason for the loss of source reference clock: Unknown Autokey configuration changed NTP IPv4 service disabled NTP IPv6 service disabled Clock change detected Authentication expected Autokey failure DENY/RSTR received RATE received CRPTO-NAK received Authentication failure Clock selection failed - No intersection System peer change detected Peer reachability lost Source address change detected. Autokey dance restarted Reference clock unreachable Peer clock unsynchronized/unselectable Stratum increase detected Clock selection failed - No selectable clock Clock selection failed - Too many false tickers Broadcast client's interface unavailable Broadcast client's interface VPN changed Authentication configuration changed IPv6 service disabled Source interface unavailable VPN change detected Manycast discovery restarted Configuration changed Manycast parent deleted Synchronization distance greater than distance threshold

Parameter Name

Parameter Meaning

SourceAddress

Indicates IP address of the source reference clock, whose synchronization is lost.

Reason

Indicates the reason for the loss of source reference clock:

Unknown
Autokey configuration changed
NTP IPv4 service disabled
NTP IPv6 service disabled
Clock change detected
Authentication expected
Autokey failure
DENY/RSTR received
RATE received
CRPTO-NAK received
Authentication failure
Clock selection failed - No intersection
System peer change detected
Peer reachability lost
Source address change detected. Autokey dance restarted
Reference clock unreachable
Peer clock unsynchronized/unselectable
Stratum increase detected
Clock selection failed - No selectable clock
Clock selection failed - Too many false tickers
Broadcast client's interface unavailable
Broadcast client's interface VPN changed
Authentication configuration changed
IPv6 service disabled
Source interface unavailable
VPN change detected
Manycast discovery restarted
Configuration changed
Manycast parent deleted
Synchronization distance greater than distance threshold

Possible Causes

This log message was generated when the current source reference clock was lost because of some reasons and no candidate reference clock can be found.

Procedure

Check whether the network is normal.
Run the display ntp-service sessions command to check whether candidate reference clocks exist.
1. If candidate reference clocks exist, perform Step 3.
2. If candidate reference clocks do not exist, run the ntp-service unicast-peer ip-address command or the ntp-service unicast-server ip-address command to configure the source reference clock.
Run the display ntp-service status command to check whether the server status is stable.
1. If the server status is stable, perform Step 4.
2. If the server status is unstable, perform Step 5.
Run the display clock command to check whether the system clock is normal.
1. If the clock of the hardware is normal, perform Step 6.
2. If the clock of the hardware is abnormal, perform Step 5.
Collect log information and configuration information, and then contact technical support personnel.
End.