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A Technical Overview of Cisco IOS NetFlow

Author: James J. Adams
by James J. Adams
Posted: Jul 16, 2015

NetFlow is an entrenched instrumentation within Cisco IOS software to illustrate network function. Visibility into the network is a crucial instrument for IT experts. In response to new needs and pressures, network operators are finding it tough to comprehend how the network is responding comprising:

  • Application and network use
  • Network efficiency and use of network resources
  • The effect of changes to the network
  • Network irregularity and security susceptibilities
  • Long-term compliance problems

Cisco NetFlow meet those requirements, developing a surrounding where managers have the devices to comprehend who, what, where, when and how network traffic is flowing. As soon as the network behaviour is understood, business procedure enhances and a review trail of how the network is used is accessible. This improved consciousness decrease susceptibility of the network as associated to outage and enables effective function of the network. Enhancements in network functions lower expenses and drives higher business revenues by better exercise of the network infrastructure.

Enterprises rely a lot on Cisco IOS Netflow to fulfil their business goals. NetFlow can be employed by enterprises, small & medium-sized businesses, and channel associates to fulfil complicated network difficulties.

Increasing significance of network awareness:

The capability to distinguish IP traffic and comprehend how and where it flows is important for network accessibility, performance and troubleshooting. Screening IP traffic flows makes possible more precise capacity planning and makes sure that resources are employed properly in support of organizational objectives. It helps IT pros determine where to use Quality of Service (QoS), optimize resource use and it plays an important part in network security to perceive DoS attacks, network-broadcasted worms, and other unwanted network procedures.

NetFlow facilitates solutions to several typical issues faced by IT pros, such as:

  • Test new applications and their network impact – recognize new application network loads, for example VoIP or inaccessible site additions.
  • Decrease in WAN traffic – employ netFlow statistics to weigh up WAN traffic enhancement from application-policy changes; comprehend who’s making use of the network and network top talkers.
  • Troubleshooting & comprehending network pain points – analyse slow network accomplishment, bandwidth hogs and bandwidth consumption speedily with command line interface.
  • Exposure of unofficial WAN traffic – ignore expensive advancements by recognizing the applications causing blockage.
  • Security and inconsistency detection – netflow can be employed for irregularity finding and worm analysis alongside applications like Cisco.
  • Confirmation of QoS limitations – authenticate that proper bandwidth has been assigned to each CoS (Class of Service) and that no Class of Service is over or under-subscribed.

About Author:

Gambit Communications is the leader in Network simulator, NetFlow and SNMP simulator tools that enhance the productivity of management software developers.

About the Author

Gambit Communicationsis the leader in network management, Mimic Simulator and Snmp Simulator tools that enhance the productivity of management software developers.

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Author: James J. Adams

James J. Adams

Member since: Apr 22, 2014
Published articles: 90

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