DHCP and TCP/IP  «Prev 

Recognizing Traffic Patterns

1) Delay in latency-sensitive traffic consists mainly of single packet transfer that must be acknowledged before communication can continue. Logon, authentication, and encryption negotiations are extreme examples of this form of traffic. For example, when a user logs on, a packet is sent to the domain controller for authentication. The logon process (transaction) cannot continue until there is acknowledgment of the request by the domain controller.

2) Bandwidth-sensitive traffic consists principally of unidirectional communications where a large amount of traffic flows in one direction and acknowledgments flow in the other. Client/server, thin client, and web-based applications exhibit this type of traffic flow. Streaming point-to-point audio and video is an example of such bandwidth-sensitive applications

3) Consider a latency-sensitive traffic examples on a 10 megabits per second (mbps) local area network (LAN) segment where delay is essentially zero. If the transaction requires 18 packets, with an average of 120 bytes per packet, and the domain controller-processing overhead is 150 milliseconds (ms).

4) The transaction time in the previous example is dominated by the domain controller response times. The level of performance is typical in LAN based environments.