Hi Jerry,

Based on our discussion yesterday I will try and summarize the current thinking on STPs:

STP is a tuple which is formed as: Network_Id:Local_id

where:

Network_id is an string (unformatted - no syntax specified) which
identifies a group of resources available to a single service.  Each
Network has an associated NSA, i.e. there is a 1:1 relationship
between and NSA instance and a Network.  A single stage lookup is
required to find the address of the NSA from the Network_id.

Local_id is a string (unformatted - no syntax specified) which
identifies a local resource (or endpoint).


A federating NSA has the option (not compulsory) of swapping the
Network and Local parts of the STP.  Both parts must be swapped (not
just the network part) this removes the need for Local_id to be
globally unique.  (this is like MLPS label swapping)

Does this align with your view?

Guy

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