Open Source Flow Monitoring and Visualization
At the heart of any reasonably sized network, should be a solid strategy around flow collection, querying and visualization. Proper use of flow logs are crucial to SecOps/NetOps from triaging attacks to capacity planning and traffic trending. I remember some 20 years ago, the first time I saw flow logs being visualized in rrdtools it was pretty close to magic. …
Brent’s Technology Bookmarks from June
Lots going on in the past couple of months. While current projects have me pretty busy I wanted to share some good reads and interesting developments in the industry. In no particular order: Thats all for now. Have a great weekend.
Getting Started With OVSDB
OVSDB (Open vSwtich Database) is a management protocol used to manipulate the configuration of Open vSwitches and more recently vendors have begun implementing OVSDB in their Ethernet switches firmware. Some of those vendor data plane implementations are already running OVS under the hood so the implementation should be relatively painless. A project I am involved in developing is the OVSDB …
Compiling Wireshark to Install the OpenFlow Dissector on a MAC
For those looking to learn or begin some development work with OpenFlow your trusty friend is the OpenFlow Wireshark dissector. Unfortunately it is still not available as a built in plugin packaged with the Wireshark binary yet. So in the meantime it requires compiling wireshark to get the C header files to generate the shared object file to drop into …
Pre-Built OpenDaylight VM Images
While there is still some uncertainty on the platform details of OpenDaylight, there isn’t uncertainty in my mind, where I will be devoting my time for the rest of the year. I put up a couple of Pre-Built OpenDaylight VM Image, made up of the two proposed bootstrap controllers and OpenFlow tools, on a couple of VM images. I split …
Open Networking Summit 2013 Is Streaming
The Open Networking Summit 2013 is going to be live streaming a good chunk of the content. Thats outstanding since most people don’t get a chance to travel. The ONS is ground zero for SDN and specifically OpenFlow. It is a great mix of vendors, researchers and community working out potential future paths of networkings. Head over to see the …
Networking Field Day #5 – A Community Event
Networking Field Day is upon us again. The days of March 6-8 some of the best in the business are going to be together again to have participating vendors pitch their product strategies to the NFD delegates and more importantly, to everyone else watching the live stream. I was invited to attend Network Field #5 and I humbly accepted. Network …
Installing Wireshark On Linux for OpenFlow Packet Captures
This tutorial is for those who are learning, troubleshooting and developing using the OpenFlow wire protocol. Packet captures are vital to troubleshooting issues that occur between the switch and OpenFlow controller. The instructions are for installing Wireshark from package or compiling and installing from source. It also walks through installing the OpenFlow v1.0 dissector plugin for Wireshark. Once the plugin …
