[ale] ssh for automated management

[David Corbin]

We are considering using ssh as part of a solution for automated remote 
managment of 10000+ node network, distributed at over 500 sites.  The nodes 
being managed are NOT "standard desktop machines" (in terms of software 
etc.), but more like "appliances".

Ideally all the management would be done from one machine. 

Anyone want to suggest any likely problems we might encounter, scale-wize?  

Thanks
David