In a previous post, we introduced QinQ support for Open vSwitch. This post will investigate how QinQ performs relative to alternatives (VXLAN, GENEVE) in both throughput and CPU utilization. This will give us some understanding why we might consider QinQ over VXLAN or GENEVE.
Continue reading “Open vSwitch: QinQ Performance”
Open vSwitch (OVS) recently gained support for 802.1ad (QinQ). It can be used as a lightweight alternative to tunnel technologies such as; VXLAN, GENEVE, GRE. A key advantage of QinQ is that it can make use of hardware offload features common in network interface cards (NICs). Only newer NICs support hardware offload for VXLAN and GENEVE. QinQ also incurs less frame processing and has a smaller encapsulation overhead.
Continue reading “Open vSwitch: Overview of 802.1ad (QinQ) Support”