• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 2389
  • Last Modified:

how do I change/add iSeries NTP server

I'm on V7R1M0, I want to set the iSeries to synchronize the system time with a NTP server.  but I can't seem to find a way to configure that anywhere.  I've tried it before with CHNGNTPA but it didn't seem to work.
1 Solution
Gary PattersonVP Technology / Senior Consultant Commented:
Ntp problems are typically firewall related. Is your firewall set up to allow inbound ntp udp packets?

The problem is that ntp is a udp-based connectionless protocol. You send a request, and in a moment there is a response, but there is no association that the firewall can see between the two events. As a result you have to open up a wide range of udp ports to allow inbound ntp responses.
...but I can't seem to find a way to configure that anywhere.

Configuration steps are in the i 7.1 Information Center. See Configuring SNTP for steps. You might also review Scenario: Synchronizing clocks with i5/OS for some general discussion and an example.

But firewall setups will definitely need attention.


Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now