Installation Guide

5 Verifying the NTP configuration
The Network Time Protocol (NTP) is required to keep the controller in synchronization with your
network hardware and virtual devices. It is automatically installed with the controller unless already
installed on your machine. In most cases NTP will already be installed and configured. (A new
NTP installation synchronizes with default time servers if your machine is not already configured
for specific time servers.) To verify that NTP is configured on your system, do the following:
1. Run the following command:
~ $ ntpdc -c peers
If the command output returns a server list similar to the following, one or more NTP servers
are configured on the system.
remote local st poll reach delay offset disp
=======================================================================
=clock.example.net 192.0.2.105 16 64 0 0.000000 0.000000 3.99217
=myco.altopt.ca 192.0.2.137 16 64 0 0.000000 0.000000 3.99217
If no NTP servers are configured on the controller system, contact your system administrator
for further assistance before operating the controller.
2. Go to “Operating the HP VAN SDN Controller” (page 17).
16 Verifying the NTP configuration