Plixer International, your team of friendly neighborhood NetFlow specialists, has just released the newest version of Flowalyzer, our NetFlow and sFlow configuration tool. In addition to some performance and usability enhancements, version 2.0 adds a new tab to the Flowalyzer interface.

Flowalyzer version 2.0 introduces The Trender

The latest addition to the Flowalyzer tool is the Trender tab, which creates graphs for critical Windows resources, all done in real-time (a configurable update period that defaults to once every second). The Trender uses SNMP information gathered from your compliant gear to measure metrics from interface utilization to CPU or memory consumption. There is no limit to the number of metrics you can trend simultaneously (aside from the obvious limitation of screen real estate).

snmp traffic grapher

Free SNMP trending application

SNMP credentialsAs with all of the Flowalyzer tabs, the Trender is simple to configure and use. First, specify your SNMP credentials, like IP address and Community String. Different sets of credentials can be saved for later use, which is ideal for monitoring several devices at once, or if you frequently trend the same devices.

Here we are setting up to graph from a Ravica SecurityProbe, which is used to monitor temperature and humidity conditions in our data center. I simply specify what my credential is to be named, a description, which version of SNMP I want to use to poll the device, as well as a few other settings, and I am free to save this configuration for later.

From here I simply click the “Get” button to establish the SNMP connection to the device. By default, Flowalyzer will detect the interfaces on the target device and allow you to start graphing utilization with a single click. However, if you are looking to trend a custom OID, Flowalyzer is certainly capable.

flowalyzer SNMP trender

For instance, I wanted to monitor the temperature readings from temperature sensors at two ends of my data room. I connected to my Ravica securityProbe again, started trending the Ethernet interface, then clicked “view” and selected “settings”. From here I can specify any OID I want to monitor. I got theĀ  OID for the temperature sensors from Ravica and plugged them into the settings, making sure to modify the instance to the port of the sensor I am looking to graph. Voila! We are now trending temperature in my data room, one sensor being represented by a green fill and the other by a blue line.

SNMP temperature trend

To test out the system, I went into the data room and covered one of the sensors with my hand to increase the temperature. Sure enough, as you can see in the trend above, the temperature did increase for a few seconds by a couple of degrees.

Don’t look a gift SNMP trender in the graph

You can see how beneficial this information can be for baselining or troubleshooting. Whether it’s data room temperature, CPU load or utilization of the T1 interface, being able to quickly and easily dive into a graphical trend of this data, and even save a CSV of it, can be invaluable.

So make sure to download Flowalyzer for free and start trending yourself crazy!

Kelly Kading author pic

Kelly Kading

Kelly Kading is the Regional Manager for the Northeast US here at Plixer. Kelly strives to deliver the best customer experience possible. He enjoys building relationships with his customers and wants to find the solution to best meet their needs. When not in the office, Kelly tries to always be in the outdoors. His favorite hobbies are hiking, snowshoeing, traveling and generally just being outside!