The Dell EMC Ready Architecture for Red Hat OpenStack Platform version 16.1 provides the ability to enable SR-IOV offloading with VF-LAG (bonding of PFs) functionality based on 2 ports on all the compute nodes at the core in the solution.
Open vSwitch hardware offload is a RHOSP feature which takes advantage of single root input/output virtualization (SR-IOV). An OVS software based solution is CPU intensive, affecting system performance and preventing full utilization of available bandwidth. This bottleneck can be addressed by making use of the OVS hardware offload capability, where the OVS data plane is moved to the underlying offloading capable smart NIC, while keeping the OVS control plane unmodified. This enables higher OVS performance without the associated CPU load.
In this Dell EMC Ready Architecture for Red Hat OpenStack Platform 16.1-Flex, Dell EMC has validated this feature enabling 2 port SR-IOV offload capability with VF-LAG functionality using Mellanox 100 GbE ConnectX-5 network adapters for tenant networks with bonding. Below is a logical diagram showing 2 port SR-IOV OVS Offload connections to the Dell EMC switches.