ME60------------Third-party equipment (NTP server)
The ME60 had successfully synchronized its clock with the NTP server, but time-out was displayed after a technician ran the display ntp-service trace command. The command output is as follows:[ME60]display ntp-service status
To address the issue, Huawei performed the following operations and observed the following information:
1. Checked the configurations on the ME60.
The configurations are as follows:
ip address 220.127.116.11 255.255.255.255
ntp-service source-interface loopBack0
ntp-service unicast-server 18.104.22.168
No error was found.
2. Ruled out that ntp trace packets were discarded by the intermediate devices.
ntp trace packets are normal UDP packets and used the port (port 123) on which the NTP synchronization status was checked. Therefore, ntp trace packets could not be discarded by the intermediate devices, because the ME60 had synchronized its clock with the NTP server.
3. Configured an ACL and printed the ip debug information (for details, see the attachment).
The IP address of the NTP server in the ntp Receiving packet was 22.214.171.124, whereas that displayed in the output of the display ntp trace command was 126.96.36.199 (the NTP server's interface IP address).
The ME60 processes only packets sent by 188.8.131.52. As a result, the execution of the display ntp trace command timed out.
4. Checked the configurations on the NTP server.The NTP server was incorrectly configured.