Skip to main content

Questions tagged [openvswitch]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
38 views

OpenStack ovs: Multiple rows in Manager patch "ptcp:6640:127.0.0.1"

While setting up OpenStack following the instructions on https://docs.openstack.org/2024.1/install/ I encounter an error on the netron-ovs-agent service. It wont start and shows the error message ...
tooola's user avatar
  • 1
1 vote
0 answers
186 views

ovs-vsctl stucks and seems there's no schema when using ovsdb in cluster mode

#!/bin/sh ovsdb-tool create-cluster /host/var/lib/openvswitch/conf.db /usr/share/openvswitch/vswitch.ovsschema tcp:0.0.0.0:6632 2> /dev/null ovsdb-server \ --unixctl=/host/var/run/openvswitch/...
Vahid Alimohamadi's user avatar
0 votes
0 answers
24 views

Add flow rules on ODL calcium release

I'm very new to sdn and virtualization world I'm following this openflowplugin documentation (well there's no explanation for openflowplugin in under calcium release, that's why I'm reading potasium'...
Frogsam's user avatar
0 votes
0 answers
120 views

Mapping external to internal IP ranges

I have many namespaces on Kubernetes. Each namespace has it own IP range. For example n1 has 10.0.1.0/24 range, n2 has 10.0.2.0/24 and so on. Each pod in each namespace get ip base on the namespace ip ...
sunrise's user avatar
  • 21
0 votes
1 answer
977 views

LACP between Ubuntu 22.04 and Open vSwitch: Ubuntu neither responding nor sending LACP PDU

I have a a fresh Ubuntu 22.04 running in KVM with 6 virtio interface emulating e1000. This is connected to an Open vSwitch and LACP is configured on both switch and Ubuntu. Summery of my problem is ...
Xuo Guoto's user avatar
0 votes
0 answers
184 views

How to drop arp requests trying to resolve a particular IP address at a logical switch port?

I am using l2gateway port to attach a physical L2 segment to a logical network. But both the logical network and the physical segment has one common IP, say 10.0.0.1. I want to prevent the traffic ...
Amogh M K's user avatar
0 votes
0 answers
190 views

When installing neutron ovn from openstack-ansible, ovs will be installed automatically if install_method is set to distro

We are trying to install openstack through openstack-ansible and configure neutron with ovn. The installation version was yoga/zed, and ovn was configured by referring to the link below. yoga : https:/...
Aaron's user avatar
  • 1
0 votes
1 answer
44 views

Isolate traffic between vswitches but allow l2 traffic from external network

I've two OVS bridges which they are connected to the 3rd v-switch using patch(es). Bridge br1 Port br1 Interface br1 type: internal Port br1-ext ...
Vahid Alimohamadi's user avatar
0 votes
0 answers
117 views

Connecting 2 Virtualbox VMs to Open vSwitch running on another Virtualbox VM

I have 3 Ubuntu 22.04 VMs created using Virtualbox. My host machine is Windows 10. One of them is running 5G core emulator, and the other one is running UEransim. I was able to connect UE to 5G ...
Michał Ryba's user avatar
0 votes
0 answers
177 views

Connecting different interfaces with different IP ranges to Open vSwith OVS

I have a setup with 4 VMs. There are two servers: VM1, VM2, one router: VM3, and one client: VM4. VM3 is connected directly to all other VMs and routes traffic between them. VM3 has 3 different ...
Goyban's user avatar
  • 1
0 votes
1 answer
463 views

No layer 2 traffic in an Open vSwitch bridge

I see no traffic in layer 2 and above in an OVS bridge, but I do see layer 1 traffic. I have the following setup: I have created a Linux VirtualBox VM with three adapters: NAT with port forwarding the ...
falhumai96's user avatar
1 vote
1 answer
166 views

OpenDayLight SDN: Can't get openflow table info via OpenDayLight RESTCONF

I'm trying to connect several openflow OVS instances to OpenDayLight SDN. My switches succesfully attached and I can get the nodes informations via the following RESTCONF request: /rests/data/...
mmxland's user avatar
  • 11
0 votes
1 answer
115 views

KVM guest low network speed

I have a KVM guest VM running RHEL 8.7 (12vCPU, 24GB RAM) and a hypervisor with 10Gb NICs. I'm getting weird results when using iperf3 on my guest machine as a client and a TrueNAS server as a server. ...
chetzz's user avatar
  • 1
0 votes
1 answer
517 views

simple openvswitch forward demo not work

What are the details of your problem? Hi, that is my first time try ovs. i am using Arch Linux, and installed openvswitch. use sudo ip link add v1 type dummy && sudo ip addr add 10.0.0.1/24 ...
test1696150's user avatar
2 votes
1 answer
561 views

LXC container network with OVS not forwarding ARP correctly

Using lxc containers, I want to simulate network components individually. For this, I am trying to embed OVS in an lxc container. Initially, I started with the following setup, which works properly ...
Friwi's user avatar
  • 121
2 votes
1 answer
2k views

KVM Networking - assign IP to each VM by outside DHCP

I am new to KVM and am having a problem with setting up the networking. I want each VM to get its IPs assigned by the network's DHCP, not the internal DHCP that the KVM keeps trying to set up. In ...
Hubert Oliver's user avatar
-1 votes
1 answer
257 views

Blocking mac spoofing on libvirt guests using openflow

I have a couple of kvm vms running with libvirt and they are using openvswitch bridges. I need a mechanism to prevent mac spoofing on a guest. I tried libvirt filters no-mac-spoofing and clean-traffic ...
igalvez's user avatar
  • 39
1 vote
1 answer
611 views

OVN Cluster Health Command

Is there any command-line tool for the OVN Cluster Health check? Or each of its components? and a command or commands which gives stats about the cluster. For example, without a functional test, I ...
Milad Jahandideh's user avatar
0 votes
1 answer
172 views

How i can assign /32 ip address to openstack nova instance without float ip?

I'm developing a custom panel for my openstack home lab via rest api. I've investigated Hetzner cloud ip (v4) addressing mechanism and i found it is like this: It is assigning /32 valid ip v4 address ...
Vahid Alimohamadi's user avatar
0 votes
0 answers
121 views

Tunnel packets get filtered or stripped off, also certain packets like BGP

I was trying to figure this out for quite some while now. So I am trying my luck here now... I have some VMs that should communicate with non VMs. There are 2 use cases. The first are BareMetal ...
thurlimann's user avatar
-2 votes
1 answer
1k views

GRE tunneling using Open vSwitch

I am trying to implement tunneling as described here with the following setup (without any success): ho1 is a host only interface. I want to connect Nested Guest 11 and Nested Guest 21. I have read ...
a5hk's user avatar
  • 107
0 votes
1 answer
217 views

Network Discovery wont work over OpenVswitch VXLANs tunnels

I have working Openvswitch VXLANs, Recently i noticed Network Discovery wont work over VXLAN tunnels across different Hypervisors. Virtual machines can use all file sharing etc if accessed through IP ...
topmop75's user avatar
0 votes
0 answers
137 views

2x Node OpenStack with additional Synology

Dave here I'm building a concept for a customer and they want to build a dev environment for their small business network. This is for pen testing, and as close as they can virtualized version of ...
Dave's user avatar
  • 1
0 votes
1 answer
137 views

kernel BUG at ./include/linux/skbuff.h:4470 leads Server to Hang

Server with linux version 5.5.0-050500-generic and OS version Ubuntu 20.04 LTS I have two interface which are connected to ovs bridge. As per normal flow packets are redirected to one interfcae to ...
aldin's user avatar
  • 11
0 votes
0 answers
141 views

open vswitch and open virtual network in openstack

I have a local lab which does not have a physical switch and consists of 3 servers which are connected to each other Nics. Now I want to implement vlans, want to know is it possible to setup vlans ...
AliReza NaSRi's user avatar
0 votes
1 answer
749 views

Open vSwitch and port translation

we've got a very specific requirement which I want to solve with Open vSwitch. It already works somehow - can you show me what I'm missing here? Requirement: a Docker container connected to a mac-vlan ...
BuzzTee's user avatar
1 vote
1 answer
1k views

OVS Bridge Inbound broadcast packets dropped when rstp enabled

I have set up the network through OVS. However, communication with other PCs is not working normally. Checking the reason, inbound broadcast packets are dropped. ovs-vsctl show Bridge "vmbr1&...
user212942's user avatar
1 vote
0 answers
202 views

OpenvSwitch PLVAN support

I have looked up the supported feature of OpenvSwitch on the official website. However, I couldn't find any support for PVLAN. I wonder if OVS supports Private VLAN (PVLAN) which is composed of ...
user393397's user avatar
1 vote
0 answers
325 views

Multiple private networks across multiple hosts (KVM, OpenVSwitch)

I had asked this question on SuperUser, looks like it wasn't the correct forum. Hopefully ServerFault is the correct one. I am working on a project, running KVM virtualization on 4 different host with ...
ASM's user avatar
  • 11
0 votes
2 answers
2k views

Why does my ethernet interface not get added to my openvswitch bridge on startup, with debian 10.5?

I am setting up a kvm/qemu/libvirt host (debian buster 10.5) with two ethernet interfaces: eno1 for the host traffic and eno2 for the VM traffic. eno2 is connected to a trunk switch port carrying the ...
Andreas Schuldei's user avatar
5 votes
1 answer
1k views

In virtual networking, how does a Virtual Switch differ from a linux kernel bridge?

I have seen that in virtual networking, guest VMs/containers can be connected with host and internet either by using kernel bridges(linux) or Virtual Switches. Example - Bridges docker uses linux ...
samshers's user avatar
  • 238
0 votes
1 answer
3k views

How to configure VLANs along with Libvirt/KVM/QEMU and OVS?

I am using Debian 9 machine as a router with two interfaces: eth0 for WAN eth1 for LAN The eth1 has subinterfaces for multiple VLANs (eth1.10; eth1.20; eth1.30) and has trunk connection to managed ...
benetsi's user avatar
  • 11
1 vote
0 answers
967 views

Why can't we ping the gateway on our Open-vSwitch network configuration on Proxmox 6.1-3?

We are trying to get open vswitch working on 10 hosts running Proxmox 6.1-3. We think we have a configuration that should work, but it doesn't and we can't ping the gateway. These are hosts with 4 ...
surfrock66's user avatar
2 votes
2 answers
5k views

What is the proper way to setup Open vSwitch with NetworkManager in CentOS 8?

How it was before in good old times of network-scripts: I've describing bridge and port in files: /etc/sysconfig/network-scripts/ifcfg-br0 /etc/sysconfig/network-scripts/ifcfg-port0 than restart ...
Oleg Neumyvakin's user avatar
1 vote
1 answer
3k views

libvirt & openvswitch VLAN tagging on the fly

I'm working on a project using libvirt with qemu and openvswitch on Debian 10. I would like to be able to modify the configuration of a network card of a domain in bash with the update-device command ...
Nicolas's user avatar
  • 21
2 votes
1 answer
950 views

Setting up DHCP with OVN

I'm trying to set up an environment similar to the one described here in which OVN will provide DHCP service to logical networks. I have a logical switch named `net0 with two ports: [root@ovn0 ~]# ...
larsks's user avatar
  • 45.7k
1 vote
1 answer
790 views

oVirt - Running VMs into a Subnet

I am trying to run VMs (and Pools) into a NAT. To reach this target I have: created a new Network in the Cluster; checked "Create on external provider" check box; selected ovirt-provider-ovn; entered ...
Fabio Marzocca's user avatar
0 votes
1 answer
2k views

libvirt: create a bridged network using openvswitch with dhcp enabled

I am trying to use libvirt + dsnmasq + openvswitch to create a bridged network with dhcp enabled. I created a libvirt network with the following XML: <network connections='1'> <name>ovs-...
mooroj's user avatar
  • 3
1 vote
0 answers
427 views

How to isolate traffic between VMs within openvswitch?

I've trying to achieve traffic isolation between VMs inside openvswitch with using VLANs. But I've faced with issue that when I've set VLAN tag on VM's port VM can't access external physical network. ...
Oleg Neumyvakin's user avatar
3 votes
4 answers
798 views

Lab of virtual computers connected to virtual switch with port forwarding

I have a lab in which I have three computers connected to a switch. two of the switch's ports are mirrored to a third port so that all the communication between the two computers is mirrored to the ...
kroiz's user avatar
  • 41
1 vote
0 answers
169 views

Overlay Network on Windows Server 2016 for WSFC + SQL Server HA

I'm trying to create an Overlay Network on Windows Server 2016 to create a separate address space for Windows Server Failover Clustering (WSFC). This cluster will eventually be used to host a SQL ...
Bhavit Naik's user avatar
3 votes
1 answer
2k views

How to setup a GRE 3 host mesh without loops and forwards with OpenVSwitch?

I'm setting up a quite simple 3 host Proxmox (Debian) HA cluster. All VMs should be in the same subnet and when one fails over to another host inside the VM no reconfiguration should be required and ...
Jey DWork's user avatar
  • 187
2 votes
2 answers
3k views

What flow rules to add to the table for L2 Forwarding in open vSwitch?

I am performing an experiment on 2 Xeon based servers. Both the servers have two dual port NIC, total 4 NICs. OVS is running on one server and DPDK pktgen on the other server. I tried to add flow ...
A-B's user avatar
  • 603
2 votes
1 answer
6k views

How to configure VxLAN tunnel with ovs bridge?

I want to connect VMs located on two different machines with ovs bridge and VxLAN tunnel, suppose the topology as the picture topology shows, my configuration on host A like this(configuration on host ...
sujz's user avatar
  • 31
2 votes
1 answer
782 views

Using openvswitch with mpls and tcp

I'm doing R&D in SDN. In this case scenario, we use MPLS labeling, and Open vSwitch as software-switches. We are using 2 server nodes with ovs 2.6.0, with kernel modules loaded, and 2 hosts. ...
Juan L. Cruz's user avatar
0 votes
1 answer
762 views

Domain names not getting resolved after adding ethernet port to Open vSwitch

For a QoS experiment, I wanted to connect two VMs to Open vSwitch. I created two tap interfaces and attached the VMs to them. I added the two tap interfaces to Open vSwitch. Finally, I added the ...
Pranjal31's user avatar
3 votes
0 answers
1k views

OpenVSwitch with Libvirt

Here's my situation: I'm running CentOS 7 with Openvswitch and Libvirt/Qemu. My domains are configured to use the virtualport type openvswitch, so when I start a VM it creates a port in the ovs bridge....
user165222's user avatar
1 vote
1 answer
3k views

Direct Veth Pair vs Linux Bridge

I'm trying different network configurations between LXC containers to learn something and have fun. I've just found out that two containers can communicate with just a veth pair, so I'd like to know ...
JumpAlways's user avatar
0 votes
2 answers
1k views

OpenNebula (KVM) + OpenvSwitch, high CPU load on high bandwidth use

We are running an OpenNebula 5.0.2 environment on Ubuntu 16.04, using OpenvSwitch 2.5 for bridging the virtual interfaces and LACP trunking the two Gbit ports, which is working perfectly. But when I ...
cbix's user avatar
  • 141
1 vote
1 answer
3k views

Running dnsmasq in docker container on Debian - check_dhcp ignores dnsmasq

I'm testing configuration for my dnsmasq DHCP on my Virtualbox Debian machine. On production I want dnsmasq to provide static IP addresses to guest systems running via qemu + libvirt + openvswitch ( ...
sebastian_t's user avatar