[ntp:questions] Re: NTP Multicast server/client?

Danny Mayer mayer at gis.net
Fri Sep 30 13:27:46 UTC 2005


Wilhelm Greiner wrote:
> Hi,
> * Danny Mayer <mayer at ntp.isc.org> schrieb:
> 
>>>what i have to do to configure an ntpd als multicast server and
>>>another als client?
>>
>> The multicast server is set up by using the "broadcast" line with a
>> multicastclient 224.0.1.1
> 
> 
> It is working now, but with stability problems.
> 
> Since the time source is an internet ntp host, the service is working only
> sometimes. On the client side i always see the Multicast NTP Server,
> also the reach goes up to 377.
> 
> But when i type "ntpq -p" is only sometimes see the "*" before the servers
> IP.
> 
> Also it also doesnt work if the multicast Server has an "Local" (Local(0))
> Entry.
> 
> It is an low latency link, ping are round about 800 - 1000 ms.
> 
> Can this delay be the problem?
> 

What version of ntp are you using. There have been many bug fixes in the
area of multicasting. I can't see how Local would have anything to do
with it since it should always receive the multicast packets no matter
what is configured.

Danny




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