Corrective Action

Enhanced PTP User Guide (UG1602)
Document ID
UG1602
Release Date
2023-04-07
Revision
1.1 English
  1. Use systemctl to identify the NTP configuration file being used by the NTP service: 
    # systemctl status ntp
ntp.service - Network Time Service
 Loaded: loaded (/lib/systemd/system/ntp.service; enabled; vendor preset: enabled)
 Active: active (running) since Fri 2019-03-22 12:28:10 GMT; 6min ago
 Docs: man:ntpd(8)
 Process: 14222 ExecStart=/usr/lib/ntp/ntp-systemd-wrapper (code=exited, status=0/SUCCESS)
 Main PID: 14230 (ntpd)
  Tasks: 2 (limit: 4915)
  CGroup: /system.slice/ntp.service
  14230 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -c /run/ntp.conf.dhcp -u 107:113

    In the above example, the NTP service is using the /run/ntp.conf.dhcp configuration file.

  2. Edit the file to enable the required NTP authentication: 
    keys <path the ntp keys file i.e. /etc/ntp/keys or /etc/ntp.keys>
trustedkey <value>
requestkey <value>
enable mode7
    Note: There is no space between ‘mode’ and ‘7’. Ensure the keys file contains authentication values identical to those in the sfptpd config file.
  3. Restart the NTP service: 
    # systemctl restart ntp
  4. Restart sfptpd.

    Always check the output in the sfptpd message_log and stats_log when sfptpd starts up, looking for any warning entries or error entries.