Console Access for Monitored Nodes

This is a two part feature request.

1. Have one or more backup access methods for a given node. 
   My interest is in having console access though I can see other use cases such as alternate interfaces.  Though this would have no value for NPM, it has value for NCM when the primary access method is unavailable.  This might be because the device is being staged or has some problem that prevents normal access.  Examples of what it could be used for include
   1. copying files such as diagnostics or logs
   2. uploading configs for new devices or RMAs
   3. running scripts to either collect debug info or make changes
2. Second part of this request is to be able to use the same IP address for multiple nodes.  This is certainly required for console access where a single IP address will be used for accessing multiple nodes (via different ports).  It can also sometimes be the case where a NAT'd environment needs to be monitored and it is not practical to do 1:1 NAT for every single device.  Instead, each device could use a different port for SNMP and a different port for SSH.  Last I checked, this is still a limitation in NPM which prevents two nodes from using the same IP address.