Importance of Traffic Classification

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Classification entails using a traffic descriptor to categorize a packet within a specific group to define that packet and make it accessible for QoS handling on the network. Using packet classification, you can partition network traffic into multiple priority levels or classes of service.

Traffic classification is the process of identifying and categorizing network traffic based on specific criteria. The purpose of traffic classification is to enable the implementation of various networking policies and to provide differentiated levels of service to different types of traffic. Here are the two reasons for using traffic classification:

A. To use the classification to route traffic: Traffic classification can be used to route traffic based on different criteria such as source IP address, destination IP address, protocol, port number, and other parameters. By identifying and categorizing traffic based on these parameters, network administrators can create policies to route traffic based on specific criteria. For example, they may choose to route VoIP traffic through a different path than email traffic to ensure that VoIP traffic receives the appropriate quality of service.

D. To use the classification to provide the configured service level: Traffic classification can be used to provide differentiated levels of service to different types of traffic. By identifying and categorizing traffic based on specific criteria, network administrators can assign different levels of priority or bandwidth to different types of traffic. For example, they may choose to assign higher priority to VoIP traffic to ensure that it receives the necessary bandwidth and is not affected by congestion on the network.

B. To use the classification to reorder packets from various sources: Traffic classification is not typically used to reorder packets from various sources. Packet reordering is typically done by the receiving device based on sequence numbers in the packets. Traffic classification is more commonly used to identify and categorize traffic based on specific criteria as described above.

C. To use the classification to discard malformed packets: While traffic classification can be used to identify and discard specific types of packets such as malware or denial-of-service attacks, it is not typically used to discard malformed packets. Discarding malformed packets is typically done by the receiving device or the network layer protocols. Traffic classification is more commonly used to identify and categorize traffic based on specific criteria as described above.