Scrutinizer v7.6 has been released. One of my favorite features is the ability to rename NetFlow v9 templates, IPFIX templates and Flexible NetFlow Templates. We had to provide this feature since Cisco NetFlow does not export the template name. Do you know why this is such a cool feature? Read more »
Michael PattersonI was scouring the web looking for information on NetFlow v9 the other day and came across this document on NetFlow. I thought these slides on ‘show ip cache flow’ and ‘show ip cache verbose flow’ were interesting. If you are trouble shooting with a customer, they can be pretty useful. Read more »
Michael PattersonDo you ever need to see the NetFlow or sFlow data down to the actual second interval? Did you know you can do it with your NetFlow Analyzer? Sub minute visibility is only a click away for the Network Admin. Below I zoomed in on a two minute interval that I want to take a closer look at. Read more »
Michael PattersonSeems like everyone is getting snow but us! As some of you know, I’m a winter fan and I love snow. I’ve only been on two snowmobile trips this year and right now is usually prime season. Our current snow conditions are appalling. Read more »
Michael PattersonWe had a large carrier call us the other day with a messed up interface names issue in Scrutinizer. The customer was exporting cflowd (NetFlow v5) from an Alcatel-Lucent SR 7750 running TMOS-C-5.0.R21. Read more »
Michael PattersonJust about all NetFlow Analyzers get the interfaces names of the routers and switches using SNMP. Another reason why SNMP vs. NetFlow is really a no contest. Anyway, we can get the names of interfaces using NetFlow via something called NetFlow option templates.
Michael PattersonBandwidth monitoring hasn’t been as big a concern for as long as some of us might think. Ethernet was founded in 1973 by Bob Metcalfe and David Boggs. Read more »
Michael PattersonAny internet service providers out there interested in MPLS NetFlow reports for network traffic analysis? I was reading this document on NetFlow MPLS Label Export and thought it might be interesting data to report on. Read more »
Michael PattersonMost of my blogs are related to NetFlow or sFlow. This weekend I’m taking a break from network traffic monitoring. My father in law, some friends and I took off snowmobiling up in Sherman, Maine.
I have so many trade show shirts that I end up wearing them on events like this from time to time. I couldn’t resist this picture below. Funny thing is, I’ve had people approach me in restaurants when they see my t-shirts for Cisco, Nortel, etc. Read more »
Michael PattersonHave you heard about exporting egress NetFlow? Do you want to know why it is different from ingress NetFlow or more importantly, when to implement it for network traffic monitoring? I’ll cover this topic in today’s blog. Read more »
Michael Patterson
