Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
ON THIS PAGE
 

New and Changed Features

The features listed in this section are new or changed as of Contrail Networking Release 21.3.1. A brief description of each new feature is included.

New and Changed Features in Contrail Networking Release 21.3.1

Support for Dynamic Address Learning with IPVLAN Networking

Starting in Contrail Networking Release 21.3.1, a vRouter can learn multiple MAC-IP address bindings for a single MAC address when Dynamic Address Learning is enabled in a virtual network.

For more information, see Contrail vRouter MAC Address—IP Address Learning and Bidirectional Forwarding and Detection Health Checking for Pods on Virtual Machines.

New and Changed Features in Contrail Networking Release 21.3

Support for Layer 3 Multihoming

Starting with Contrail Networking 21.3, we are adding high availability support with Layer 3 multihoming without the need for MC-LAG or bond interfaces.

For more information, see Layer 3 Multihoming.

Support for Flow Stickiness in a Load-Balanced System

Flow stickiness is a beta feature in Contrail Networking Release 21.3 that helps to minimize flow remapping across equal cost multipath (ECMP) groups in a load-balanced system. Flow stickiness reduces such flow being remapped and retains the flow with the original path when the ECMP group's member change. When a flow is affected by a member change, vRouter reprograms flow table and rebalances the flow.

For more information, see Flow Stickiness for Load-Balanced System in the Customized Hash Field Selection for ECMP Load Balancing document.

Support for User-Defined Tags in Security Policy

Starting in Contrail Networking Release 21.3, security policy allows optional user-defined tags which enables you to define tag IDs along with tag names. You can also create a predefined tag type with user-defined tag value ID.

For more information, see Security Policy Features.

Upgrade Contrail Networking Through Kubernetes and/or Red Hat OpenShift

Starting in Contrail Networking Release 21.3, you can update Contrail Networking through Kubernetes and/or Red Hat OpenShift. You can use this procedure to update Contrail Networking deployed by the Tungsten Fabric (TF) Operator.

For more information, see How to Upgrade Contrail Networking Through Kubernetes and/or Red Hat OpenShift.

Deploy RHOSP16.1 with Contrail Control Plane Managed by Tungsten Fabric Operator

Starting in Contrail Networking Release 21.3, you can use the Operator Framework for Contrail Networking deployment that is using Red Hat Openstack version 16.1 (RHOSP16.1) as it’s orchestration platform.

For more information, see Deploying Red Hat Openstack with Contrail Control Plane Managed by Tungsten Fabric Operator.

Configure MTU For Virtual Networks

Starting in Contrail Networking Release 21.3, you can configure Maximum Transmission Unit (MTU) for virtual networks(VN) in the Contrail Command UI. To configure MTU, select Overlay>Virtual Networks>Create Virtual Network. In the Advanced option, you can configure the MTU value in the MTU field. The available range is 0-9216. The Dynamic Host Configuration Protocol (DHCP) will not use the MTU value and it will not be inherited by VMIs attached to the VN.