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Published on Nov 20, 2015
Presented by: Rashid Khan and Jiri Benc, Red Ha
While debugging networking related problems on modern cloud and container based solutions, one often finds oneself trapped in a maze of Open vSwitch bridges combined with regular bridges, tunnels, veth pairs and network namespaces with tens or hundreds of network interfaces. The relationship between those is usually anything but clear.
The talk will present plotnetcfg, an open source tool to visually represent relationship between network interfaces on a single host, including Open vSwitch bridges. To illustrate the complexity of current Open vSwitch users, some of the more interesting setups seen in the wild will be shown and described.