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play_arrow Overview
- play_arrow Understanding Contrail Controller
  - Contrail Overview
  - Contrail Description
play_arrow Installing and Upgrading Contrail
- play_arrow Supported Platforms and Server Requirements
  - Server Requirements and Supported Platforms
- play_arrow Installing Contrail and Provisioning Roles
- play_arrow Installation and Configuration Scenarios
- play_arrow Upgrading Contrail Software
  - Contrail In-Service Software Upgrade from Releases 3.2 and 4.1 to 5.0.x using Ansible Deployer
  - Contrail In-Service Software Upgrade from Releases 3.2 and 4.1 to 5.0.x using Helm Deployer
- play_arrow Backup and Restore Contrail Software
  - Backing up Contrail Databases in JSON Format
- play_arrow Multicloud Contrail
- play_arrow Using Contrail with Kubernetes
- play_arrow Using VMware vCenter with Containerized Contrail
- play_arrow Using Contrail with Red Hat
  - Deploying Contrail with Red Hat OpenStack Platform Director 13
  - Provisioning Red Hat OpenShift Container Platform Clusters Using Ansible Deployer
- play_arrow Contrail and AppFormix Kolla/Ocata OpenStack Deployment
- play_arrow Using Contrail with Juju Charms
  - Deploying Contrail by Using Juju Charms
- play_arrow Contrail Command
- play_arrow Extending Contrail to Physical Routers, Bare Metal Servers, Switches, and Interfaces
- play_arrow Contrail for Data Center Automation and Fabric Management
play_arrow Configuring Contrail
- play_arrow Configuring Virtual Networks
- play_arrow Example of Deploying a Multi-Tier Web Application Using Contrail
  - Example: Deploying a Multi-Tier Web Application
  - Sample Network Configuration for Devices for Simple Tiered Web Application
- play_arrow Configuring Services
- play_arrow Configuring Service Chaining
- play_arrow Examples: Configuring Service Chaining
- play_arrow Adding Physical Network Functions in Service Chains
  - Using Physical Network Functions in Contrail Service Chains
  - Example: Adding a Physical Network Function Device to a Service Chain
- play_arrow QoS Support in Contrail
  - Quality of Service in Contrail
  - Configuring Network QoS Parameters
- play_arrow BGP as a Service
  - BGP as a Service
  - BGP as a Service in Contrail Release 3.1
- play_arrow Load Balancers
- play_arrow Optimizing Contrail
play_arrow Contrail Security
- play_arrow Contrail Security
  - Security Policy Enhancements
play_arrow Monitoring and Troubleshooting Contrail
- play_arrow Configuring Traffic Mirroring to Monitor Network Traffic
- play_arrow Understanding Contrail Analytics
- play_arrow Configuring Contrail Analytics
- play_arrow Using Contrail Analytics to Monitor and Troubleshoot the Network
- play_arrow Common Support Answers
play_arrow Contrail Commands and APIs
- play_arrow Contrail Commands
- play_arrow Contrail Application Programming Interfaces (APIs)

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Multiqueue Virtio Interfaces in Virtual Machines

date_range 16-Oct-23

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Contrail 3.2 adds support for multiqueue for the DPDK-based vrouter.

Contrail 3.1 supports multiqueue virtio interfaces for Ubuntu kernel-based router, only.

Multiqueue Virtio Overview

OpenStack Liberty supports the ability to create VMs with multiple queues on their virtio interfaces. Virtio is a Linux platform for I/O virtualization, providing a common set of I/O virtualization drivers. Multiqueue virtio is an approach that enables the processing of packet sending and receiving to be scaled to the number of available virtual CPUs (vCPUs) of a guest, through the use of multiple queues.

Requirements and Setup for Multiqueue Virtio Interfaces

To use multiqueue virtio interfaces, ensure your system meets the following requirements:

The OpenStack version must be Liberty or greater.
The maximum number of queues in the VM interface is set to the same value as the number of vCPUs in the guest.
The VM image metadata property is set to enable multiple queues inside the VM.

Setting Virtual Machine Metadata for Multiple Queues

Use the following command on the OpenStack node to enable multiple queues on a VM:

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source /etc/contrail/openstackrc
nova image-meta <image_name> set hw_vif_multiqueue_enabled="true"

After the VM is spawned, use the following command on the virtio interface in the guest to enable multiple queues inside the VM:

ethtool –L <interface_name> combined <#queues>

Packets will now be forwarded on all queues in the VM to and from the vRouter running on the host.

Note:

Multiple queues in the VM are only supported with the kernel mode vRouter in Contrail 3.1.

Contrail 3.2 adds support for multiple queues with the DPDK-based vrouter, using OpenStack Mitaka. The DPDK vrouter has the same setup requirements as the kernel mode vrouter. However, in the ethtool –L setup command, the number of queues cannot be higher than the number of CPU cores assigned to vrouter in the testbed file.

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Contrail Feature Guide

ON THIS PAGE

Multiqueue Virtio Interfaces in Virtual Machines

Multiqueue Virtio Overview

Requirements and Setup for Multiqueue Virtio Interfaces

Setting Virtual Machine Metadata for Multiple Queues

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