Just guessing, but the HMC does periodically dial out and call home. And the way you currently sync the clocks is to set the HMC clock, which sets the SE clocks. Today, you then POR to set the hardware clock. If they adapt the ETR code to query the SE which is set via the HMC dial out, well that might make it so.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Paul Gilmartin Sent: Thursday, July 28, 2005 9:11 PM To: [email protected] Subject: Re: Server Time Protocol (Was: Re: SMPE 3.4) On Thu, 28 Jul 2005 06:51:58 -0700, Edward E. Jaffe <[EMAIL PROTECTED]> wrote: > Date: Thu, 28 Jul 2005 06:51:58 -0700 > Matthew Stitt wrote: > > >>Ummm. Or how about the z/OS announcement?! > >> > >> http://www.ibm.com/isource/cgi-bin/goto?it=usa_annred&on=205-167 > > One enhancement with which a lot of people should be quite pleased is > the preview of Server Time Protocol, mentioned in the z/OS V1.7 > announcement. Finally, IBM mainframes will automatically synchronize > with one another and with dial-up/Internet time reference sites (e.g., > NIST), adjust for daylight time, etc. No more expensive Sysplex Timers! > At the URL: STP is designed to: * Allow clock synchronization for z9-109, z990, and z890 servers and CFs without requiring the Sysplex Timer * Support a multisite timing network of up to 100 km (62 miles) over fiber optic cabling, thus allowing a Parallel Sysplex to span these distances * Potentially reduce the Cross-Site^(r) connectivity required for a multisite Parallel Sysplex * Coexist with an ETR network * Allow use of dial-out time services to set the time to an international time standard (such as Coordinated Universal Time (UTC)) and adjust to UTC on a periodic basis * Allow setting of local time parameters, such as time zone and daylight savings time * Allow automatic updates of daylight savings time STP is planned to be available as a feature on z9-109, z990, and z890, and be supported by z/OS V1.7 (PTFs will be required to enable STP support). Conspicuous by its absence is any mention of TCP/IP or NTP. Still only dial-out. How does one dial-out? Does OSA include a modem? Does one attach a modem to a serial port on OSA? Other (specify)? -- gil -- StorageTek INFORMATION made POWERFUL ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
