Secondary DNS is not updated quickly from Primary

[base60]

Barry Margolin wrote:
> In article <dmq2tg$cun$1 at sf1.isc.org>,
>  "Borhade Ganesh (vMoksha)" <Ganesh.Borhade at UCB-Group.com> wrote:
> 
> 
>>Dear All,
>>     I have configured Primary DNS Server --> Bind 9.2.3 on Solaris 9 with
>>private IP address  & Secondary DNS Server --> Bind 9 on Solaris 10 with
>>private IP address.
>>My zones are transfer from Primary DNS to Secondary DNS only when i reload
>>zone from secondary  [ rndc reload <zone name > ].
>>    I wants to make DNS Server's  live on Monday with Public IP address but
>>before that i wants to make sure that if i restart rndc service ( rndc
>>stop/start ) on primary ( Zone updated with serial no ) then it should
>>automatically transfer the zone  to Secondary DNS 
>>    Can anyone help me how to resolve it?
> 
> 
> The slave should automatically refresh the zone every <refresh> seconds, 
> where this is the Refresh parameter in the zone's SOA record.  So if you 
> want to ensure that it updates within 15 minutes, set this to 900.
> 
> You should also be able to use the DNS Notify mechanism.  Make sure that 
> the slaves are listed in the NS records of the zone, and the master will 
> send a Notify message to the slaves within a few seconds of your 
> reloading the zone on the master.

I think bind9 automatically does a Notify if the serial number changes
or bind is restarted...