[ntp:questions] Configuring IPv4 Multicastclient option
mayer at gis.net
mayer at gis.net
Wed Apr 20 16:37:09 UTC 2005
----- Original Message Follows -----
> Hi,
>
> I am using multicastclient configuration option, but was unsuccessful.
> The two machines are configured in the following way:
>
> MACHINE 'A':
>
> '/etc/ntp.conf' entries:-
> server <stratum1_server_address>
> broadcast 224.0.1.1
> keysdir /etc/ntp.keys
> trustedkey 1
>
> '/etc/ntp.keys' entries:-
> 1 M pass
>
>
> MACHINE 'B':
>
> '/etc/ntp.conf' entries:-
> multicastclient 224.0.0.1
> keysdir /etc/ntp.keys
> trustedkey 1
>
> /etc/ntp.keys:-
> 1 M pass
>
>
> First, i started 'ntpd' on machine 'A' and allowed it to get
> synchronise to stratum 1 server ( until machine 'A' attained a
> stratum number 2). At this point, i started 'ntpd' on machine 'B' in
> debug mode.
>
> Although 'B' was receiving packets from 'A' at regular intervals, but
> i couldn't find out from any of the query tools ( 'ntpq' or 'ntpdc').
>
> My Questions are:
>
> 1> What is the exact behavior expected from machines 'A' and 'B' with
> respect to 'broadcast 224.0.1.1' and 'multicastclient 224.0.1.1'
> configurations.
>
> 2>Using any ntp query tools 'ntpq' or 'ntpdc', can i check the status
> of ntpd (with respect to multicastclient configuration) in machine
> 'B'. If so, kindly mention the interactive internal commands that can
> be used to.
>
> 3> How do i check that 'B' is actually updating its local clock with
> the broadcast packets from 224.0.1.1, considering that 'B' has
> selected 'A' for synch thru 224.0.1.1.
>
> Can anyone please explain me how exactly broadcast-multicastclient
> configuration works.
> I would be greatful it anyone gives some useful pointers related to
> this topic.
Did you read http://ntp.isc.org/bin/view/Support/ConfiguringAutokey
on how to set up autokeys?
Danny
>
> Thanks in Advance,
> -Srikanth K.
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