Date: Mon, 14 Jan 2002 16:13:40 +1100 From: Rob B <rbyrnes@ozemail.com.au> To: "Joe & Fhe Barbish" <barbish@a1poweruser.com> Cc: "Drew Tomlinson" <drew@mykitchentable.net>, "FBSD Questions" <questions@FreeBSD.ORG> Subject: RE: ntpd as time server? Message-ID: <5.1.0.14.2.20020114160945.01cbb490@pop.ozemail.com.au> In-Reply-To: <LPBBIGIAAKKEOEJOLEGOIEHDCMAA.barbish@a1poweruser.com> References: <002801c19c66$b25e0d30$0301a8c0@bigdaddy>
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At 15:44 14/01/2002, Joe & Fhe Barbish sent this up the stick: >I thought I would see 3 or 5 packets pass through udp to >port 123 as the remote time servers are accessed to build >the data ntp needs to average the clock time. > >What I see are a continuous exchange of packets to those >remote time services. Like 250 in a half hour and still going. >I look at the drift file and it's blank. First up, did you touch /etc/ntp.drift? I found that ntpd wouldn't create the file, but will happily append to it once it is created. >I get on a winbox and change the socketwatch to point to the >IP address of the FBSD Nic card that winbox goes through and >the win socketwatch program returns a message can not find host. Try letting it go for about an hour, ntpd will not let any other ntpd's sync with it until it has established the drift file and is sure that is as accurate as it can be. If there is a lot of variation in the responses from the master time server, it could take a little while longer to work out the drift. <snip> Cheers, Rob >-----Original Message----- >From: Drew Tomlinson [mailto:drew@mykitchentable.net] >Sent: Sunday, January 13, 2002 2:16 PM >To: Joe & Fhe Barbish >Cc: questions@freebsd.org >Subject: Re: ntpd as time server? > > >----- Original Message ----- >From: Joe & Fhe Barbish >To: Drew Tomlinson >Cc: FBSD Questions >Sent: Sunday, January 13, 2002 10:12 AM >Subject: RE: ntpd as time server? > > >Joe wrote > > The final option is ntpd. This function does get the time from a > > internet ntp server to update the requesting FBSD box, and keeps > > the clock accurate by making very small adjustment over long periods > > of time. It can be configurated to broadcast time packets to all > > machines on the private net it is connected to. > > It is not a ntp time server with a unique IP address. > > >Drew wrote >I don't think this is correct. ntpd *IS* a time server and the IP >address is the address of the machine you run it on. On my private >network, I have a FBSD box on 192.168.20.4. I have a Win2K machine on >192.168.20.3. I have a ntp client program called "Automochron" that >runs on the Win2K machine. In the client, I have the time server >listed as 192.168.20.4 (the FBSD machine). The Win2K client gets time >updates. > > >Joe writes back. >When you say "I have a FBSD box on 192.168.20.4." Is this the IP >address of the Nic card on the FBSD box that's talking to the machines >down line, or is it the public IP address your private network is >known >by? 127.0.0.0 is the only IP address that I know of that is this FBSD >box. >I have 3 Nics, How would I get all the Winboxs on all the Nics to >point >to one single IP address for the ntp time server? > >Drew answers: >It's my internal interface (downline). If all your Winboxes can >connect to your FBSD box then just use whatever address that is that >your Winboxes use to connect. For example, let's say NIC1 serves Win >subnet A and NIC2 serves Win subnet B. Then you would set Winboxes on >subnet A to get ntp updates from the ip address of NIC1 and Winboxes >on subnet B to get ntp updates from the ip address of NIC2. Or if you >have the appropriate routers (this may be your FBSD box alone or other >routers) such that all 3 of your subnets can communicate with the >others (i.e. Winbox on NIC2 can talk to Winbox on NIC1) then it >shouldn't matter which IP address you tell the Winboxes to use as all >NICs are reachable. > >HTH, > >Drew > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-questions" in the body of the message -- We're just two lost souls swimmin' in a fishbowl, year after year [15200.8 km (8207.8 mi), 262.8 deg](Apparent) Rennerian This is random quote 1105 of a collection of 1200 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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