NEC IP8800/S6600, IP8800/S3600 NTP Communication Failure, Time Synchronization by NTP Is Disabled

3.Troubleshooting Functional Failures in Operation

3.17 NTP Communication Failure

3.17.1Time Synchronization by NTP Is Disabled

If time synchronization by NTP is disabled, isolate the problem by following the failure analysis methods shown in the table below.

Table 3-65: NTP Failure Analysis Method

No.	Troubleshooting Steps and Command	Action
1	Execute the show clock command to see if	If the command retrieves the time zone setting, go to No. 2.
	a time zone has been set up.	If no time zone has been set up in the output of the command, set up a time zone.
2	Check the difference in time between this	Go to No. 3 if the difference in time between this system and the NTP server is
	system and the NTP server.	within 1000 seconds.
		If the difference in time between this system and the NTP server is greater than
		1000 seconds, adjust the time of this system with the time of the NTP server using
		the set clock command.
3	Check communication with the NTP server	Execute the ping command to see if NTP server and this system can
	by IPv4.	communicate over IPv4 protocol.
		Confirm that no setting for discarding packets using UDP port number 123 exists
		in the NTP server or this system.

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