wa6zvp wrote: > [EMAIL PROTECTED] wrote: >> Hi, >> >> We have installed [EMAIL PROTECTED] We are >> unable to use it as a broadcast server. >> >> Would help if anyone who has has configured it as a broadcast server >> can get back. >> >> Every time we specify a broadcast address like 192.168.39.255 in >> ntp.conf, re-starting ntpd service results in an error like not Class D >> address. >>
That's not an error. Class D addresses are multicast addresses and you are not using a multicast address. 192.168.39.255 is a broadcast address. You must be running in debug mode unless that version emitted that message anyway. It's really only meant for debugging. >> We need a broadcast ntpd server on Windows. Incase there's any other >> freeware available kindly let us know. >> >> Thanks and Regards, >> M Shetty > > Wouldn't your clients respond correctly if you used the multicast > address that > is assigned to NTP? The normal address is 224.0.1.1, which I use. > There is no "normal" address. There are a range of reserved IPv4 addresses you can use any one of which is a valid multicast address. > Not positive, but maybe if you just used the keyword 'broadcast', > without an address, > it might default to the standard broadcast address for the current > network. An address is *required* for the broadcast statement otherwise it would not know which kind of 'casting to do and to what address. There is no standard broadcast address. Whether it is better to use broadcast or multicast depends a great deal on the location of the recipient systems in the network. If every system on the local LAN needs to receive packets then broadcasting to the local LAN broadcast address is usually the best solution. If only a few systems need it then multicast to a local multicast address with a low hop count (ttl in IPv4 language) is the best solution or they can get it directly by pointing the system's ntpd server to it. Danny _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
