DVR aims to isolate the failure domain of the traditional network node and to optimize network traffic by eliminating the centralized L3 agent shown above. It does that by moving most of the routing previously performed on the network node to the compute nodes.
- East/west traffic (Traffic between different networks in the same tenant, for example between different tiers of your app) previously all went through one of your network nodes whereas with DVR it will bypass the network node, going directly between the compute nodes hosting the VMs.
- North/south traffic with floating IPs (Traffic originating from the external network to VMs using floating IPs, or the other way around) will not go through the network node, but will be routed directly by the compute node hosting the VM. As you can understand, DVR asserts that…
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