Definition - What does JFlow mean?
JFlow is configured by default in routers and switches developed by Juniper networks. It records all network activity from the enabled port and saves statistical information on network usage retrievable through its programmatic interface.
Techopedia explains JFlow
JFlow is primarily a data flow sampling technology created using a collection of Java classes. JFlow operates like NetFlow and SFlow, developed by Cisco and HP, respectively. Although mainly used as a flow recording technique, JFlow also provides network analysis and anomaly detection by saving and comparing network data flow trends.
JFlow works by monitoring each packet that flows inside a network. If an incoming packet is not registered in the router’s table, JFlow records that instance and discards any that already have routing table instances. Data collected by JFlow is maintained in a series of caches, each of which provides a different set of information that pertains to network flow.
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