How To Discover Quality of Service (QoS) in NetFlow

Posted in Cisco Medianet, NetFlow, NetFlow Analyzer, Network Monitoring, Network Problem Resolution, Network Traffic Analysis on November 9th, 2011 by Jimmy W
How To Discover Quality of Service (QoS) in NetFlow

Important NetFlow TrafficDid you know that you can find quality of service (QoS) information in NetFlow? Knowing what quality of service your crucial network traffic gets can either make or break an efficient infrastructure. Due to its importance, certain traffic may be given a higher priority. Crucial business applications, for example, need higher priority than normal traffic, while social networks can receive low priority. Is there a way to easily find this information? Absolutely! Read more »

Jimmy Wendler

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ToS, DSCP and NetFlow…. what the DiffServ? Part 4

Posted in NetFlow on August 18th, 2009 by mike@plixer.com
ToS, DSCP and NetFlow.... what the DiffServ? Part 4

This is part 4 of an 4-part series (so far 4 parts) on the ToS field (i.e. Differentiated Services Field) of IP frames. I finally get into how all this relates to NetFlow in 2009.  Make sure you have already read Part 1, Part 2 and Part 3 of this blog.

ToS and DSCP part 4
At the end of Part 3 of this blog series I digressed very briefly on how CBQoS can be used to modify DSCP values on packets which come into the router.  In other words, VoIP traffic that comes in on ports 4569 and 5060 could enter a router with one DSCP value 0×00 and leave with a completely different one e.g. 0xEF (i.e. 11101111).    Read more »

Michael Patterson
Founder and CEO

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