Release Notes: OpenSDN R21.12¶

Release Tag: TF21.12

Available at hub.docker.com.

Supported Platforms and Versions¶

Table 1 : Supported Release Versions

Orchestrator Release	Deployment Tool	Operating System, Kernel and Key Components Version
Kubernetes 1.21.4	Juju Charms	Ubuntu 20.04.3—Linux Kernel Version 5.4.0-92-generic MaaS Version: 2.6.2
Kubernetes 1.21.4	Ansible	CentOS 7.9—Linux Kernel Version 3.10.0-1160.25.1.el7.x86_64 Ansible version : 2.7.11 Docker version: 18.03.1-ce
OpenShift 4.8.x	Operator Framework	RHEL CoreOS 4.8.x
Openstack Rocky	Ansible	CentOS 7.9—Linux Kernel Version 3.10.0-1160.25.1.el7.x86_64 Ansible version: 2.7.11 Docker version: 18.03.1-ce
Openstack Queens	Ansible	CentOS 7.9—Linux Kernel Version 3.10.0-1160.25.1.el7.x86_64 Ansible version: 2.7.11 Docker version: 18.03.1-ce”
Canonical OpenStack Train	Juju Charms	Ubuntu 18.04.5—Linux Kernel Version 4.15.0-166-generic MaaS Version: 2.6.2
Canonical OpenStack Ussuri	Juju Charms	Ubuntu 20.04.3—Linux Kernel Version 5.4.0-92-generic MaaS Version: 2.4.2
Red Hat OpenStack Platform 16.1.3/16.1.6	RHOSP 16 Director	RHEL 8.2—Linux Kernel Version 4.18.0-193.29.1 Director Image: rhosp-director-images-16.1-20201202.1.el8ost.noarch Red Hat Content Sync Date : 2021-20-09 (10:16:53) RHEL 8.4—Linux Kernel Version 4.18.0-305.19.1.el8_4.x86_64 Director Image: rhosp-director-images-16.2-20210902.2.el8ost.noarch Red Hat Content Sync Date : October 06, 2021, 05:21 PM PST”

Support for Dynamic Address Learning with IPVLAN Networking¶

In the latest release of OpenSDN 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: Dynamic MAC/IP Learning.

Support for Layer 3 Multihoming¶

It is now possible to provide high availability to vRouters 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¶

Improved flow stickiness is a feature 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: Stickiness for Load-Balanced Flows

Support for User-Defined Tags in Security Policy¶

In this latest release 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.

Upgrade OpenSDN Through Kubernetes and/or Red Hat OpenShift¶

Starting in OpenSDN Release R21.12, you can update OpenSDN through Kubernetes and/or Red Hat OpenShift. You can use this procedure to update OpenSDN deployed by the OpenSDN Operator.

For more information see: OpenShift Operator Upgrade

Configure MTU For Virtual Networks¶

Starting in OpenSDN Release R21.12, you can configure Maximum Transmission Unit (MTU) for virtual networks(VN) in the OpenSDN 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.