Changing the handling of a standard OID

Hi,

    Is it possible to register a handler via the embedded perl interface 
for the "interfaces.ifTable.ifEntry.ifOperStatus" branch OID. 

When I attempted to do this using the method shown in the embedded 
perl example, the snmp request seemed to be handled by the "agent",
(not sure of the terminology here), and not passed on to my handler.

Andy Pearce