Kategorie: Openvswitch

Openvswitch related information

Boot integration of the Openvswitch in Ubuntu

The installation of the Openvswitch on Ubuntu brings an automatic integration into the boot sequence. When Ubuntu is booted, the Openvswitch is also started. Any bridge or port, which has been defined in previous sessions, is restored.BUT: No L3 interfaces are set up, junk interfaces, which have been defined in previous sessions, are restored. The […]

Updated: 17/01/2021 — 12:02

Openstack Networking (Type driver vlan and Openvswitch)

The most challenging task, when starting to work with Openstack is the setup of the networking. There is the physical network infrastructure used by the hardware components of the cloud and the virtual network infrastructure used by the tenants of the cloud. The virtual network infrastructure must run/be mapped to the physical network infrastructure. When […]

Updated: 17/01/2021 — 13:17

Openstack Neutron: VXLAN and l2population

In a previous article I showed an analysis of the Openflow rules on the OVS bridge used for tunneling traffic between nodes. Openstack Neutron offers an option to populate MAC entries on br-tun. In order to use this option, the mechanism driver l2population has to be added to the file ml2_conf.ini . [ml2] type_drivers = […]

Updated: 17/01/2021 — 13:18

Switching Performance – Chaining OVS bridges

The Openvswitch installed on a Linux system provides the feature to configure multiple bridges. Multiple OVS bridges behave like independent local switches. This is the way OVS is providing switch virtualization. It is possible to chain multiple OVS bridges on one system. Chaining multiple bridges is used by Openstack neutron, when using the default networking […]

Updated: 17/01/2021 — 13:18

Openstack Neutron using VXLAN

The networking part of Openstack provides several models for the L2 networks to be used as L2 tenant broadcast domains. An overlay network can be used to separate the MAC addresses and „vlans“ of the tenant networks from the transport layer network. Openstack neutron in Havana supports two overlay network technologies, GRE and VXLAN. VXLAN […]

Updated: 17/01/2021 — 13:18

KVM using the Openvswitch

Running KVM using the Openvswitch one way to attach VMs to the network. When using libvirt 1.02 and higher, several configuration options are available. The virt-manager can only use openvswitch fake bridges, so the virt-manager is not the best tool to configure the network interfaces for VM’s. There are two ways to define libvirt networks: […]

Updated: 09/11/2013 — 21:47