how does the new ccna work

how does the new ccna work.Total Length Max TTL Min TTL MaxTable 11-12 shows the IPv4 and IPv6 non-keyword segments. Table 11-12 Flexible NetFlow IPv4 and IPv6 Non-Keyword SegmentsIPv4 and IPv6Total Length MaximumFlexible NetFlow contains several predefined records that network administrators or network security personnel can use to begin deploying NetFlow within their units. network administrators or network security personnel can also create custom records for more granular analysis. As Cisco continues to improve Flexible NetFlow, many commonly used user-defined flow records are available as predefined records for easier implementation.Predefined records are guaranteed to be compatible with traditional NetFlow collectors. Predefined records have both unique keyword and non-keyword fields, allowing network administrators or network security personnel to monitor various types of traffic in their own network environment without having to customize any records.Note: If Flexible NetFlow predefined records are based on the old NetFlow aggregation caching scheme, no aggregation is performed. The predefined records can also be tracked separately for each flow.As the name implies, Flexible NetFlow gives network administrators or network security personnel the flexibility to create their own records (user-defined records) by explicitly specifying key fields and non-key fields to capture data in a customized manner. To add the value of a non-keyword segment to a flow to provide additional information about the packets that are part of the flow. To change the non-key434 Chapter 11 Network and Host Insight Techniquesvalue of a key field will not create a new stream. In most cases, only the value of the non-key field is extracted from the first packet that is affiliated with the flow. FlexibleNetFlow allows network administrators to obtain various counter values, such as the number of bytes of a flow that is a non-key field and the number of packets that are subordinate to the flow.