Paul,
I think your adding names in /etc/hosts resolve only address name
resolution but does not add any new discovered node.

Am I correct ?

I discovered 231 nodes and no way to discover the 3 that the customer
expected.
I can ping it, either out or in NetView. I can even send snmp to them !
When I used netmon -M 63 to trace, all I got is that those three tried to
ping me but it is just like netmon ignore them ! So no mention either in
the object or the topo databases.

Nevertheless, I noticed your mention about NT DNS. YOU have to mark a
particular checkbox for reverse addressing. By default, it does not ! Still
I doubt its effect to my 3 nodes...

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