NTP Synchronization

This section provides information about how to set and monitor NTP on your Oracle Communications Session Border Controller.

When an NTP server is unreachable or when NTP service goes down, the Oracle Communications Session Border Controller generates traps for those conditions. Likewise, the Oracle Communications Session Border Controller clears those traps when the conditions have been rectified. The Oracle Communications Session Border Controller considers a configured NTP server to be unreachable when its reach number (whether or not the NTP server could be reached at the last polling interval; successful completion augments the number) is 0. You can see this value for a server when you use the ACLI show ntp server command.

• The traps for when a server is unreachable and then again reachable are: apSysMgmtNTPServerUnreachableTrap and apSysMgmtNTPServerUnreachableClearTrap
• The traps for when NTP service goes down and then again returns are: apSysMgmtNTPServiceDownTrap and apSysMgmtNTPServiceDownClearTrap

Note:

The Oracle Communications Session Border Controller does not support NTP service over wancom0 when that interface is configured for a VLAN.