NetFlow has traditionally been limited to exporting fields contained within a packet header. With the influx of Content Delivery Networks (CDNs) like Akamai, Level3, Amazon, etc., it is hard to know where users are actually going. The obscurity caused by CDNs is further compounded with the transition to 443 as a transport for most web …
How to Use Flow Data as an Alternative to SSL Decryption Read More »
I set out today to write about Cisco ART metrics as I was having trouble understanding the difference between it and technologies such as AVC, MACE and Performance Monitoring as all of them can be exported using Flexible NetFlow. As I read different materials found on Cisco’s Web site, I became even more confused. Hate …
This blog aims to do one thing, show you how to monitor VoIP traffic on your network. I get questions, almost daily, asking, “How can we use NetFlow to trouble shoot call quality issues?” Customers are usually shocked when I show them how easy it is to do. First we will need to go over …
I was reading up on the latest release (January 2014) of the Gartner Application Performance Monitoring definition and found myself constantly thinking about how NetFlow or IPFIX can be used to deliver on the objectives that Gartner outlined. I think it is interesting to learn about how these new technologies are expanding beyond traditional byte …
Are you looking for a Cisco IOS AVC Configuration? This configuration will work with IOS, not for IOS XE. 15.1(3)T is the minimum revision for performance monitor phase 1 15.1(4)(M2) is the minimum revision for performance monitor phase 2 (ART/MACE)
As you can probably tell from the title, Cisco AVC IPFIX support is all of the rage now. With all kinds of new elements that can be exported and measured, why wouldn’t anyone want to send this to their NetFlow monitoring tool? One thing I have noticed working in support is that the more information …
A Distributed view of Application Performance Monitoring doesn’t have to be an expensive endeavor. There are ways, on most networks deployed today, to gain insight into hop-by-hop latency, packet loss, retransmits, jitter, and many other application performance metrics. You simply need to know how to look for it.
Instructions for the Cisco WLC NetFlow configuration can be found in the Cisco Wireless LAN Controller Configuration Guide, Release 7.4, page 130. The NetFlow configuration instructions are also outlined below. Enabling NetFlow exports from the Cisco Wireless LAN Controller gives you Cisco’s Application Visibility and Control reporting in Scrutinizer v11. Examples of these advanced reporting …