Setting NTP Synchronization

When the Oracle® Enterprise Session Border Controller requires time-critical processing, you can set NTP for time synchronization. Setting NTP synchronizes both the hardware and the software clocks with the reference time from an NTP server that you specify. NTP is most useful for synchronizing multiple devices located on one network, or across many networks, to a reference time standard.

To guard against NTP server failure, NTP is restarted periodically to support the dynamic recovery of an NTP server.

Note that ntp-sync works only by way of the management interface and only on wancom0. Do not configure ntp-sync by way of the media interface or any other port.

To set NTP synchronization:

In the ACLI’s configure terminal section, type ntp-sync and then press Enter to access the NTP configuration.
```
ORACLE# configure terminal
ORACLE(configure)# ntp-sync
ORACLE(ntp-config)#
```
To add an NTP server, type add-server, the Space bar, the IPv4 or IPv6 address of the server and then press the Enter key.
For example, this entry adds the NTP server at the Massachusetts Institute of Technology in Cambridge, MA:
```
ORACLE(ntp-config)# add-server 18.26.4.105
```
To delete an NTP server, type delete-server, the Space bar, and the IPv4 or IPv6 address of the server you want to delete and then press the Enter key.
```
ORACLE(ntp-config)# del-server 18.26.4.105
```