trost@REED.REED.EDU (Bill Trost) (04/26/91)
The manual for ntpd(8) says: NOTES Please choose your NTP peers carefully; send mail to ntp@TRANTOR.UMD.EDU for assitance. Reed is gatewayed onto NorthWestNet (a part of NSFNET) via a gateway to washington.edu at ogi.edu. I've asked for assistance from OGI as well, but they seem to be busy with finals or something silly like that. :-) Here are my to ntpd configuration files for the moment (following some of the various README's). We're only using two local stratum-2 hosts at the moment (I may add a third when another appropriate machine arrives). These machines are running the ntpd supplied with DECstation Ultrix, by the way. - romulus:/etc/ntp.conf trusting no # # Primaries peer clepsydra.dec.com peer fuzz.sdsc.edu peer wwvb.erg.sri.com # # Secondaries peer fuzz.sura.net peer libra.rice.edu # # Local (secondaries) peer vishnu.reed.edu - vishnu:/etc/ntp.conf trusting no # # Primaries peer ncarfuzz.ucar.edu peer norad.arc.nasa.gov peer wwvb.isi.edu # # Secondaries peer fuzz.psc.edu peer lilben.tn.cornell.edu # # Local (secondaries) peer romulus.reed.edu Thanks for your help.
hakanson@CSE.OGI.EDU (Marion Hakanson) (04/26/91)
Bill, >Reed is gatewayed onto NorthWestNet (a part of NSFNET) via a gateway >to washington.edu at ogi.edu. I've asked for assistance from OGI as >well, but they seem to be busy with finals or something silly like >that. :-) Sorry I gave you the brush off earlier, but you didn't say you were in a hurry! If you really can't wait.... We do have a (budding) NTP hierarchy within NWNET which I coordinate in my spare time. The general model we follow is that each campus sets up one (or two, or three, for larger sites) stratum-2 server, each of which has "server" relationships with two stratum-1 clocks from clocks.txt, as well as "peer" relationships with two or three other NWNET stratum-2 servers. The network of NWNET stratum-2's is being (loosely) organized. Currently the only official one is my own clocktower.ogi.edu, but we're in the process of designating two or three at ORST (Oregon State Univ.), and there's a couple at UWashington and a couple at UOregon. This is why I asked you to wait in our private correspondence. >Here are my to ntpd configuration files for the moment (following some >of the various README's). We're only using two local stratum-2 hosts >at the moment (I may add a third when another appropriate machine >arrives). > >These machines are running the ntpd supplied with DECstation Ultrix, >by the way. Three s-2's is overkill for your campus. We only run one here, although I'm considering a second as backup. We also set up a couple s-3's in each department, "peer" those with our campus s-2 and with a couple NWNET s-2's, giving us a plenty robust hierarchy. All departmental workstations are set up as NTP "clients" at s-4, in that they peer at their respective departmental s-3(s) and with no others. Keep in mind that we don't want to beat up on the poor s-1's, OK? Also, I recommend that your s-2 server run xntpd instead of ntpd, if at all possible (since the former gives you more info if you want to monitor it), but ntpd is adequate just the same. The Ultrix-4.1 ntpd on our DEC's seems to behave OK, but ours are only "clients". So, I recommend that you set up just one s-2 server at Reed, point it at two stratum-1's (don't use ncarfuzz -- everyone here but ORST has an asymmetric route to that ticker), and at a couple other NWNET s-2's. You're welcome to use our clocktower as one of them, and then probably also check with UW or ORST for another one or two. Having more s-2's doesn't really help you out much, since you only have one network connection, and your departmental s-3's protect you against your s-2 going insane. I think there are enough NWNET s-2's that you don't need to go "outside" to peer with an s-2 server. Anyway, I keep hoping to hear that someone inside NWNET has bought themselves a good radio clock (not a Heath job), so we could have us our very own stratum-1 in the NorthWet, but so far no soap.... -- Marion Hakanson Domain: hakanson@cse.ogi.edu UUCP : ogicse!hakanson