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Questions tagged [openvswitch]

Open vSwitch is an open-source software switch designed to be used as a virtual switch.

Open vSwitch is a production quality open source software switch designed to be used as a vswitch in virtualized server environments. A vswitch forwards traffic between different VMs on the same physical host and also forwards traffic between VMs and the physical network. Open vSwitch supports standard management interfaces (e.g. sFlow, NetFlow, IPFIX, RSPAN, CLI), and is open to programmatic extension and control using OpenFlow and the OVSDB management protocol.

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248 questions
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Configure in-band OpenFlow Controller with OVS not in miniet

I'm trying to configure a remote OpenFlow controller over an interface which is also part of the bridge OpenVswitch is managing. I am not using mininet; rather, I have a real VM host (supporting a few qemu-kvm VM's) with a real ethernet port. I want…
xphoon
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enable BFD for checking link status

I am new to OpenVswitch. I am trying to enable BFD for checking link status, can you please tell me how to enable it in open Vswitch. and after making changes to enable BFD do we need to rebuild open Vswitch and how? Thanks, Pankaj
user3747561
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How to drop the incoming packet from openVswitch integration bridge for specific IP?

I have installed the openvSwitch server on my two centos server (KVM). I have created two VM’s and bridged using openvSwitch. I am able to ping between the two VM’s. I am using VLAN for differentiating the private network. Below is the VM IP VM1 IP…
user2905667
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extract data from ovs dump-flow using pyparsing

I'm trying to extract source and destination MAC and IP addresses and packets transmitted from the output of the command "ovs dump-flows". The output of the command will be as…
Veena
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Connecting two mininet in two different VM with the same Ryu Controller

I am using virtual box on Windows 10 and running two VMs with ubuntu 18 concurrently Both of them have mininet installed. In the VMs settings I have set the network as Host Only adapter and in advanced selected allow VMs so that both the VMs can…
COLLiDER
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Openstack traffic flow is not showing on patch-tun or patch-int

I´m analyzing OpenStack traffic flow between instances, to understand how the traffic goes from one place to another. I have a provider network with openvswitch configuration. My scenario is depicted in the photo, where I make a ping between two…
amh9412
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"/var/run/openvswitch/ovs-vswitchd.pid" no such file or directory

When I try to run ovs-appctl command I get this error: 2022-05-10T15:49:25Z|00001|daemon_unix|WARN|/var/run/openvswitch/ovs-vswitchd.pid: open: No such file or directory ovs-appctl: cannot read pidfile "/var/run/openvswitch/ovs-vswitchd.pid" (No…
frodo
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System() function is hang in linux

Situation: In my project, I want modify OVS source code to perform some my functions. I want when OVS receive a specific packet, it will add a flow to userspace don't need controller, to do that i used system() function in a source c file to execute…
Hai Pham
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Compile OpenVswitch in Odroid XU4 has error

I am doing OpenVswitch compile in Odroid XU4 with the kernel module. I did execute the 'boot.sh' file and configure it with the Linux kernel module. But When I make OpenVswitch, there is an error when building the datapath kernel module. Here is the…
HEESOO KIM
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OpenvSwitch building, installation and testing problem

I am trying to install OpenvSwitch on Ubuntu 18.04. I have two kernels version which are 5.11.0-27-generic and 5.4.0-42-generic. I set ./configure to build 5.4.0-42-generic version. Then I use command 'make modules_install', and I get the following…
MrQ.
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pktgen cannot send packet in ovs dpdk scenario

The test setup is: pktgen send packet to vhost-user1 port, then ovs forward it vhost-user2, then testpmd received it from vhost-user2. The problem is: pktgen can not send any packets, testpmd received no packet also, I don't know what's the…
happy
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netem ratelimit stops limiting rate after short time and restores to default

I have experienced a couple of times that netem stops working when I apply qdisc. This happened with both rate limit as well as loss. For example, consider a scenario: Internet <------>(eth1) A (eth2)<------> (eth3)B PC A is connected to an internet…
HIq
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Huge packet loss in test configuration with docker and ovs

I' have two test scenarios to compare. One is with two VM's, and the second is with two docker containers (with ubuntu images). The picture below shows my scenarios. 1 and 2 are ports: transmitting and receiving. The Tx-br, OVS-D, Rx-br -…
Skyeee
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How configure Octavia in Openstack Kolla?

Im trying to deploy Octavia in Kolla Openstack, my global.yml is: config_strategy: "COPY_ALWAYS" kolla_base_distro: "ubuntu" kolla_install_type: "source" kolla_internal_vip_address: "169.254.1.11" network_interface:…
Abel
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Is there a way to delete one output port from flow entries?

openvswitch, a flow entry can have a list of actions (e.x. multiple ports for output). Is there a way that I can remove one specific output port from the action list?
Roni
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