Re: Using NTP
tor 2020-07-16 klockan 07:28 + skrev Gadi Ben-Avi: > Hi, > > I was asked to make sure that the mainframes are using the same time > source as the rest of the computers on our network. > I know what the NTP servers are in our network. > > In the HMC, I found 'Customize Console Date/Time' > I added the NTP servers to the screen, and they seem to have been > accepted. > (I did this for our DR computer) > > Do I have to do anything else? > > We are currently running z13s's if that matters. > You need at least three time sources, the more the better. The time sources you have, what stratum are they at (stratum = how far from a time source which they are.) Verify that your organization's time sources is independent of each other (a lot of people fails at that...) Can the CPC be a time source for other system ie can it be a server in ntp parlance ? Can the CPC be added as a peer ? Would it be feasible to run the z13s as time servers in a peering agreement which each other ? -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Using NTP
Gadi, In order for your z/OS lpars to stay in line with the NTP servers time, you will need to change your CLOCKxx member to look like this: OPERATOR NOPROMPT STPZONE YES STPMODE YES TIMEDELTA 10 An IPL will be required to put this into effect. Peter -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Using NTP
To complement: Now your HMC is connected to time network. To some time servers. The HMC will act as time server for CPC. NTP is kind of cascading structure. -- Radoslaw Skorupka Lodz, Poland == Jeśli nie jesteś adresatem tej wiadomości: - powiadom nas o tym w mailu zwrotnym (dziękujemy!), - usuń trwale tę wiadomość (i wszystkie kopie, które wydrukowałeś lub zapisałeś na dysku). Wiadomość ta może zawierać chronione prawem informacje, które może wykorzystać tylko adresat.Przypominamy, że każdy, kto rozpowszechnia (kopiuje, rozprowadza) tę wiadomość lub podejmuje podobne działania, narusza prawo i może podlegać karze. mBank S.A. z siedzibą w Warszawie, ul. Senatorska 18, 00-950 Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. Sąd Rejonowy dla m. st. Warszawy XII Wydział Gospodarczy Krajowego Rejestru Sądowego, KRS 025237, NIP: 526-021-50-88. Kapitał zakładowy (opłacony w całości) według stanu na 01.01.2020 r. wynosi 169.401.468 złotych. If you are not the addressee of this message: - let us know by replying to this e-mail (thank you!), - delete this message permanently (including all the copies which you have printed out or saved). This message may contain legally protected information, which may be used exclusively by the addressee.Please be reminded that anyone who disseminates (copies, distributes) this message or takes any similar action, violates the law and may be penalised. mBank S.A. with its registered office in Warsaw, ul. Senatorska 18, 00-950 Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. District Court for the Capital City of Warsaw, 12th Commercial Division of the National Court Register, KRS 025237, NIP: 526-021-50-88. Fully paid-up share capital amounting to PLN 169.401.468 as at 1 January 2020. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Using NTP
W dniu 16.07.2020 o 09:28, Gadi Ben-Avi pisze: Hi, I was asked to make sure that the mainframes are using the same time source as the rest of the computers on our network. I know what the NTP servers are in our network. In the HMC, I found 'Customize Console Date/Time' I added the NTP servers to the screen, and they seem to have been accepted. (I did this for our DR computer) Do I have to do anything else? We are currently running z13s's if that matters. This is part of the things you have to do. First, check your hardware list - I mean list of features delivered (feature codes). You have to have STP enablement. This is replacement of sysplex timer, but it is also prerequisite for synchronisation with NTP. Next is to enable STP network, which is rather simple in case of single CPC, but it is reported as disruptive. Next is to change CLOCKxx member and reIPL. Oh, do it slowly. A mistake may cause you will have to start over. And delete existing setup which is also reported as disruptive. BTW: There is also option to use "very accurate" time source - in that case you have to connect it directly to CPC using coax (you can find BNC connectors). -- Radoslaw Skorupka Lodz, Poland == Jeśli nie jesteś adresatem tej wiadomości: - powiadom nas o tym w mailu zwrotnym (dziękujemy!), - usuń trwale tę wiadomość (i wszystkie kopie, które wydrukowałeś lub zapisałeś na dysku). Wiadomość ta może zawierać chronione prawem informacje, które może wykorzystać tylko adresat.Przypominamy, że każdy, kto rozpowszechnia (kopiuje, rozprowadza) tę wiadomość lub podejmuje podobne działania, narusza prawo i może podlegać karze. mBank S.A. z siedzibą w Warszawie, ul. Senatorska 18, 00-950 Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. Sąd Rejonowy dla m. st. Warszawy XII Wydział Gospodarczy Krajowego Rejestru Sądowego, KRS 025237, NIP: 526-021-50-88. Kapitał zakładowy (opłacony w całości) według stanu na 01.01.2020 r. wynosi 169.401.468 złotych. If you are not the addressee of this message: - let us know by replying to this e-mail (thank you!), - delete this message permanently (including all the copies which you have printed out or saved). This message may contain legally protected information, which may be used exclusively by the addressee.Please be reminded that anyone who disseminates (copies, distributes) this message or takes any similar action, violates the law and may be penalised. mBank S.A. with its registered office in Warsaw, ul. Senatorska 18, 00-950 Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. District Court for the Capital City of Warsaw, 12th Commercial Division of the National Court Register, KRS 025237, NIP: 526-021-50-88. Fully paid-up share capital amounting to PLN 169.401.468 as at 1 January 2020. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Using NTP
Hi, I was asked to make sure that the mainframes are using the same time source as the rest of the computers on our network. I know what the NTP servers are in our network. In the HMC, I found 'Customize Console Date/Time' I added the NTP servers to the screen, and they seem to have been accepted. (I did this for our DR computer) Do I have to do anything else? We are currently running z13s's if that matters. Thanks Gadi -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
