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What is flannel?

Flannel acts as a dedicated virtual networking layer specifically designed for containerized applications. When working within the OpenShift Container Platform, it can serve as an alternative networking solution to the conventional software-defined networking (SDN) components. This method proves especially beneficial for OpenShift deployments in cloud settings that also utilize SDN technologies, such as OpenStack, by eliminating the need for redundant packet encapsulation between the two systems. Each flanneld agent is responsible for sending information to a centralized etcd store, which allows other agents on different hosts to efficiently route packets to various containers within the flannel network. Furthermore, the accompanying diagram illustrates the architecture and data flow that facilitate communication among containers operating over a flannel network. This configuration not only boosts overall network performance but also streamlines the management of containers in intricate environments, ultimately leading to better resource utilization and operational efficiency.

What is Open vSwitch?

Open vSwitch is a versatile, multilayer virtual switch licensed under the open-source Apache 2.0, designed to enable extensive network automation through various programming extensions while supporting conventional management interfaces and protocols like NetFlow, sFlow, IPFIX, RSPAN, CLI, LACP, and 802.1ag. It is also engineered to be distributed across multiple physical servers, similar to VMware's vNetwork distributed vSwitch and Cisco's Nexus 1000V. Its implementation spans a wide range of products and is found in many large-scale production environments, some of which are notably massive. Each stable release of Open vSwitch goes through thorough testing, including a comprehensive regression suite that features hundreds of system-level tests and thousands of unit tests to ensure reliability. In addition to OVS, the Open vSwitch community is dedicated to the development of the OVN project, which augments OVS by offering native support for virtual networking abstractions such as virtual L2 and L3 overlays, along with security groups. This ongoing dedication to enhancement guarantees that Open vSwitch continues to provide a powerful and adaptable solution for network virtualization across various scenarios, ensuring its relevance in the ever-evolving landscape of network technologies.

Media

Media

Integrations Supported

OpenStack
Mirantis Kubernetes Engine
Red Hat OpenShift

Integrations Supported

OpenStack
OpenNebula
oVirt
openQRM

API Availability

API Availability

Pricing Information

Pricing not provided

Pricing Information

Free
Free Version

Supported Platforms

SaaS

Supported Platforms

Linux

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Red Hat

Date Founded

1993

Company Location

United States

Company Website

docs.openshift.com/container-platform/3.4/architecture/additional_concepts/flannel.html

Company Facts

Organization Name

Open vSwitch

Company Website

www.openvswitch.org

Categories and Features

Container Networking

Not specified

Categories and Features

Container Networking

Not specified

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