Ntp Communication Failures; The Switch Cannot Be Synchronized By Using Ntp - Alaxala AX6700S Troubleshooting Manual

3 Troubleshooting Functional Failures During Operation

3.17 NTP communication failures

3.17.1 The Switch cannot be synchronized by using NTP

If the system clock cannot be synchronized by NTP, isolate the cause of the problem
according to the failure analysis method described in the following table.
Table 3-74 NTP failure analysis method
No. Items to check and commands
1 Use the
show clock
make sure the time zone is set.
Check the time difference between
2
the Switch and the NTP server.
3 Check communication with the NTP
server via IPv4.
158
Action
command to If the time zone is set in the information displayed by the
command, go to No. 2.
If the time zone is not set in the information displayed by the
command, set the time zone.
If the time difference between the Switch and the NTP server is
less than 1,000 seconds, go to No. 3.
If the time difference between the Switch and the NTP server is
1,000 seconds or more, use the
the system clock of the Switch with the NTP server.
Use the
possible via IPv4 between the NTP server and the Switch.
Make sure that there is no setting for discarding any packets at the
UDP port number 123 in the settings of the NTP server or the
Switch.
set clock
command to check whether communication is
ping
command to match