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Welcome to the first in a three-part series on network behavior analysis through the eyes of Plixer International. The second part in the series focused on NetFlow analytics vs. network behavior analysis, while the third focused on network behavior analysis and DoS attacks.

International will help us outline what is involved when setting up IP SLA jitter monitors on Cisco routers. We will also discuss how to create IP SLA reports through SNMP using a typical SNMP trending tool.

The Enterasys switch supports NetFlow v9 and the Extreme switch supports sFlow v5. They cranked up the sampling rate on the Extreme to sample every packet. Plixer wasn’t confident that the Extreme Summit switch can sample every packet but, the switch didn’t bark at after they entered the command. For flow collection, they used Scrutinizer NetFlow and sFlow Analyzer v6.0 which is pictured below. PLXRSW3 (sFlow) is the Extreme Summit switch and PLXRSW1 (NetFlow) is the Enterasys Switch:

In this blog, we will outline what is involved when creating an IP SLA ICMP Echo monitor on Cisco routers.

As networking professionals know all too well, their responsibilities often extend beyond the network operations center (NOC), and the network itself is frequently made scapegoat when applications don’t perform as expected. At Interop Las Vegas last week, Dr. Jim Metzler, vice president of Ashton, Metzler & Associates, called on network pros and IT pros to overcome technological and organizational silos in order to increase the prestige…

In the quest for improved insight into network traffic, increasing numbers of administrators are turning to flow monitoring. The question arises, however, which is better, sFlow or NetFlow? Most major switch vendors are shipping equipment today with support for one or the other.

NetFlow is a technology developed by Cisco Systems that is also supported by many other hardware vendors.