snmpcmd - EngineID Discovery And TimeSync

Hi,

I have a unusual case, where the agent and manager exchange 
engineID/engineTime/engineBoots before hand !!
This is to avoid engineId discovery / time synch packets. These 2 packets 
are never exchanged in the lifetime.

I am trying to use snmpget/snmpset/snmpwalk commands, I 'think' these are 
stateless applications, they do no persist any of the above (engine 
id/time/boot details).
Every time these commands do engineID discovery and time synch.

Am I right?

Can you please tell me if there is a smart hack to this to avoid engineID 
discovery / time synch packets.

--
thanks
chinmaya