Network Architecture
- Define the interfaces between layers ( ↕️ ) in the same system and the layers of peer system ↔️
- Defined by Internet Engineering Task Force (IEFT)
第七層 Application Layer
應用層 - OSI(7) & TCP/IP(5)
第六層 Presentation layer :
第四層 Transport : Segment : Port Address
Transport layer : Sqe Num
第三層 Network Layer = Internet Layer (TCP) : Packet ( datagram ) : Logical A
Network layer — IP class / QoS / IPsec / Routing / NAT ; Subnet
第二層 Data Link Layer = Network Access (TCP) : Frame : Phys Add
Data Link layer : MAC ; 802 ; Framing ; PPP ; HDLC
第一層 Physical Layer = Network Access (TCP) : bit
Physical Layer