•Intermittent
connectivity suggests an Email-like architecture
–Common “Handling
Instructions” for a data collection
–Network
must accommodate the persistence and transfer of state
•Names (not addresses) are the means of reference
–Names have two
parts: a routing
part (specifies the IPN
region) and
an administrative part (specifies the DNS name)
–Routing between IPN
regions based upon routing part of the name
•Late-Binding
–Separate addressing
domains for each internet; administrative names converted to local addresses only at the destination
IPN region
•Indirection
–Inherent dependence
on intermediate relay agents
•Custodial transfer
–Intermediate nodes assume possibly-long-term responsibility for
data forwarding
–“Bundles” as a common end-to-end transfer mechanism