[Teas] Network Slicing Design Team definitions

["Joel M. Halpern" <[e-mail]>]

This message contains two relatively minor points I noted while reading 
the draft.  I think they need to be considered, but want to keep them 
separate from the discussion of the Isolation and Resolution text.

Oddity:
     The definition of Endpoint has the oddity that it seems to leave 
the original packet source and the intended packet destination as not 
being Endpoints?  They can not be attached directly to the transport slice?

Minor issues:
     The definition of availability says it is about the time to recover 
from failure.  But then it includes the mean time between failure, which 
while I can understand having an impact on availability is not about the 
time to recover.  The combination of mtbf and mttr give the expect 
portion of the time the service is running / available.

     It is also worth noting that the MEF ended up going to a lot of 
trouble to more precisely define availability due to real-world problems 
with the informal definition.  Maybe we should point to their definition 
instead of trying to craft our own?

Yours,
Joel