Hi Ken, Does your configuration have/use STP on the z frame in conjunction with the HMC to keep the time in sync?
Rex -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Ken Smith Sent: Wednesday, December 23, 2015 7:43 AM To: [email protected] Subject: Re: SNTP client on z/OS Here, our processor's HMC gets time from one of our routers, which gets time from NIST (the HMC can go directly to NIST but I found firewalls were troublesome). The HMC then steers the processor's time. zOS doesn't know what's going on, I think, other than seasonal time changes. This has been a very stable config for many years. I've used plain language above instead of the jargon and complexity "Time people" seem to love. See Redbook: Server Time Protocol Implementation Guide http://publib-b.boulder.ibm.com/abstracts/sg247281.html?Open Ken Smith State of Maryland On Tue, Dec 22, 2015 at 1:05 PM, Paul Gilmartin < [email protected]> wrote: > On Tue, 22 Dec 2015 10:28:38 -0600, John McKown wrote: > > > >But you could use a custom NTP client to change the _local_ time by > >adjusting the offset. The simplest way would be to just have your NTP > >client code do a 'T CLOCK=' command. This doesn't change the TOD hardware > >clock. It does not affect the TIME macro if you requiest "GMT" time. But > it > >will reset the local time. Oh, this is _not_ going to help if you problem > >is that you are trying to get Kerberos or some other SSL process to work > >because I'm fairly sure that they use the TOD hardware clock (STCK or > STCKE > >instruction). > > > What about fudging CVTLSO which ought to get TIME GMT correct? If > Kerberos, > etc. need to avoid UTC skew they must be CVTLSO-savvy even if they STCK. > > -- gil > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN The information contained in this message is confidential, protected from disclosure and may be legally privileged. If the reader of this message is not the intended recipient or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any disclosure, distribution, copying, or any action taken or action omitted in reliance on it, is strictly prohibited and may be unlawful. If you have received this communication in error, please notify us immediately by replying to this message and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
