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2.7. OpenStack Networking

This section outlines the top new features for the Networking service.
VLAN-Aware VMs
Instances can now send and receive VLAN-tagged traffic over a single vNIC. This ability is particularly useful for NFV applications (VNFs) that expect 802.1q VLAN-tagged traffic, allowing multiple customers/services to be served by a single vNIC. This implementation has full support with OVS-based and OVS-DPDK-based networks.

Warning

Do not upgrade to the Red Hat Enterprise Linux 7.3 kernel without also upgrading from Open vSwitch (OVS) 2.4.0 to OVS 2.5.0. If only the kernel is upgraded, then OVS will stop functioning.