NetFlow allows granular and accurate traffic measurements as well as high-level aggregated traffic collection that can assist in identifying excessive bandwidth utilization or unexpected application traffic. They can determine the Type or Class of Service (QoS) and group with application mapping such as Network Based Application Recognition (NBAR) to identify the type of traffic such as when peer-to-peer traffic tries to hide itself by using web services and so on. Packet capture tools can extract high granularity from network traffic but are dedicated to a port mirror or a per segment capture and are built for specialized short term captures rather than long historical analyses as well as packet based Predictive AI Baselining analytics tools traditionally do not provide the ability to perform forensic analysis of various sub-sections or aggregated views and therefore also suffer from a lack of visibility and context.īy analyzing NetFlow data, a network engineer can discover the root cause of congestion and find out the users, applications and protocols that are causing interfaces to exceed utilization. Traditional SNMP tools are too limited in their collection capability and the data extracted is very coarse and does not provide sufficient visibility. As organizations continue to rely more and more on computing power to run their business, transparency of business applications across the network and interactions with external systems and users is critical and NetFlow monitoring simplifies detection, diagnosis, and resolution of network issues. So, in the above scenario, even if netflow-sampler is chosen as 'both', traffic would not be seen as different with respect to ingress and egress.NetFlow can provide the visibility that reduces the risks to business continuity associated with poor performance, downtime and security threats. If the connection is from Client to Server, either it is download or upload, it is still in the same direction and is in one session.ġ) If the client downloads or uploads still it is in one session. Rx: Monitor received traffic on this interface.īoth: Monitor transmitted/received traffic on this interface. Tx: Monitor transmitted traffic on this interface. The following options are available for the Netflow sampler:
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