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Characterizing Network Traffic - Coggle Diagram
Characterizing Network Traffic
Size of Object on Network
Simple e-mail : 10 Kbytes
Simple web pages : 50 Kbytes
Terminal screen : 4 Kbytes
High quality image : 50,000 Kbytes
Database backup : 1,000,000 Kbytes or more
Types of Traffic Flow
Peer-to-Peer (P2P)
Server
Thin Client
Client / Server
Terminal / Host
Distributed computing
Traffic Load
Calculate whether capacity is sufficient
Number of stations
Average station idle time between sending frames
Required time to transmit message
Qos Requirements
ATM Service Specifications
Realtime variable bit rate (rt-VBR)
Non-realtime variable bit rate (nrt-VBR)
Constant bit rate (CBR)
Unspecified bit rate (UBR)
Available bit rate (ABR)
Guaranteed frame rate (GFR)
per IETF
Differentiated services working group specifications
RCF 2475
IP packets can be marked with DSCP to influence queuing and packet dropping decisions
Integrated services working group specifications
Controlled load service
Guaranteed service
Traffic Behaviour
Broadcast
Example : FF:FF:FF:FF:FF:FF
A broadcast frame is a frame that goes to all network stations on a LAN.
Multicast
Example : 01:00:0C:CC:CC:CC (Cisco Dicovery Protocol)
A multicast frame is a frame that goes to a subset of stations.
Network Efficiency
Protocol Interaction
Windowing and Flow Control
Error-Recovery Mechanism
Frame Size
Network Traffic Factor
Traffic Behavior
Quality of Service (QoS) requirements
Traffic Load
Sources Location & Data Stores
Traffic flow
Traffic Flow for Voice over IP
Flow for transmitting digital voice is P2P
Call setup & teardown is a client/server flow
Audio voice is separate from call setup & teardown