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Network Protocols and Communications (Moving data in the Network (Protocol…
Network Protocols and Communications
Rules of Communication
Message Size and Timing
Size of individual segments must meet min and max size req.
Segment is encapsulated in separate frame, sent over the network
De-encapsulated and put back
together to be processed and interpreted
Message Delivery Options
Multicast
Broadcast
Unicast
Message Encoding
Destination Decoded
Source Encoded
Moving data in the Network
Accessing Resources
Data Link: Physical Address [MAC]
Network: Logical Network Address [IP]
Protocol Data Units(PDUs)
Packet
Frame
Segment
Bits
Data
Communicating the Messages
Different convo can be interleaved
Increase reliability of Network Comms
Bad : increase level of complexity
Protocol Encapsulation and De-Encapsulation
Network Protocols and Standards
Interaction of Protocols
Transport Protocol :TCP
Internet Protocol: IP
App Layer:HHTP
Network Access Protocol: Data Lin & Physical Layer
TCP/IP Protocol Suite and Communication
App Layer: is what we use.
Transport
Internet Layer: IP, IP support & Routing Protocol
Network access layer: Ethernet, ARP
Rules that govern communications
Protocol suites
ISO (International Standard Organization
Segments - Transport
Packets - Network
Data - Application, Presentation and Session
Frames - Data Link
Bits - Physical