1577ff0d_ssion_Data_Unit_SDU____TwelveC__Name
[Layer#] 3 [Description] Controls the way data will be sent to recipient ; Factors like the physical path the data should take based etc are performed by this layer. This layer translates logical addresses, or names, into physical addresses, performs routing [Name] 
Network
A p p l i c a t i o n
P r e s e n t a t i o n
S e s s i o n
T r a n s p o r t
N e t w o r k
D a t a L i n k
P h y s i c a l
Oracle12c: Session Data Unit(SDU) | TwelveC
Name