Questions tagged [openvswitch]

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45 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 ...
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0answers
10 views

How do I add an extra bridge to a bonded interface using openvswitch

I need to add redundancy to my network, currently my public facing servers have one interface facing the internet and one going to my private network. This is all in the same vlan over separate ...
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0answers
46 views

IPSec + IKEv2 with Pre-Shared Key between Open vSwitch and pfSense

I have a simple network made of an Open vSwitch Ubuntu Server-based virtual machine connected to a pfSense firewall. I would like to connect this two with an IPSec + IKEv2 secure tunnel. {10.2.2.0/24}...
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1answer
212 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 ...
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0answers
38 views

Routing between linux bridge and openvswitch?

My scenario look like this: As you can see the Node1 use OVS and Node2 use Linux bridge (LB) I need to make both KVM1 & KVM2 can see each other over network. The configuration on OVS I use in ...
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0answers
112 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 ...
1
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1answer
838 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 ...
1
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1answer
244 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 ...
1
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1answer
141 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 ~]# ...
1
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1answer
214 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 ...
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0answers
135 views

Automatic port mirroring in OVS without duplicate packets

Here is the thing: I need to setup a port mirroring configuration in Proxmox and OVS in order to monitor all traffic from VMs and send them to an IDS. This configuration should not generate duplicate ...
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0answers
60 views

Having more than one openvswitch instance in a server

I am working in a Linux software infrastructure that uses openvswitch and Namespaces. The idea is to create new instances of openvswitch when a instance being used becomes too much loaded and starts ...
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1answer
400 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-...
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0answers
66 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. ...
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4answers
309 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 ...
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0answers
80 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 ...
2
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1answer
770 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 ...
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2answers
2k 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 ...
2
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1answer
3k 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 ...
1
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1answer
333 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. ...
0
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1answer
315 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 ...
3
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0answers
693 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....
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1answer
2k 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 ...
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2answers
706 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 ...
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1answer
1k 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 ( ...
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0answers
611 views

Why on network node not create tap* interface when created instance?

OS RHEL 7.2, openstack release - kilo. I have 4 node: controller, network, compute and block storage. I have some problem. When I create instance on Horizon, he get IP, but in network node not create ...
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1answer
1k views

Linux Spanning Tree between Bond and an interface

I try to do something with network virtualisation to get my Proxmox server ready for production in an HA environment i'm using openvswitch 2.5 the Setup that i try to reach: My Server which has 4 ...
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1answer
88 views

how to direct all the traffic associated with a VM to a separate physical ethernet interface in Xen?

I have 3 VMs running on Xen hypervisor with Ubuntu 14 DomU.I want to configure my network in such a way that traffic to and from Vm1 goes out via eth1, vm2 via eth2 and so on. For this i need to use ...
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0answers
23 views

Bind OVSBridge to an already bound port

I want to enslave a NIC to OVSBridge which is already enslaved to a Bridge. Is that possible, if yes, how ?
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0answers
659 views

Lacp over two linux boxes - something like MC-LAG

I have two linux box'es which are gateways for some kind of virtualized network (Openvswitch, GRE). I am trying to optimize performance - so I decided, that I have to try remove routing part from them ...
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0answers
2k views

OpenVSwitch LACP bonding test setup problems [closed]

I want to test LACP bonding on ovs. I have 3 Ubuntu computer. Using 2 of them as a openvswitch and one of them as a host. The first ubuntu (call it switch1) has three NIC (2 of them usb/eth ...
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0answers
354 views

Connect Open vSwitch to interface in a VM OpenStack

I have single VM in OpenStack, with a single interface eth0. I want that all the traffic that goes in and out is passed trough a Open vSwitch (where I will have some flow rules). I did the following: ...
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1answer
2k views

how to bring up network-interfaces and bridges in specific order at boot time

Currently, my setup is having many nodes, each having RHEL 7 installed, with each node having only one single interface. I am using ovs-bridge and a vlan-tagged interface within the host. I use vlan-...
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0answers
454 views

Adding multiple vlan interfaces into bridge (ovs)

I am adding multiple vlan interfaces (eth3.409, eth3.410, ...) to a bridge, furthermore I also add the eth2 interface (local network) to the bridge. eth3 is a trunk with 13 different vlans. The ...
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0answers
622 views

So many retransmission over NSX enabled vDS of vSphere

I'm currently on test of VMware NSX network environment and met some trouble. My Environment is: Management Cluster with 3 Hosts and NSX components on 2 dedicated Hosts Compute Cluster with 2 ...
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2answers
574 views

Persist OVS mirroring on Xen reboot

I'm running Xen on Debian with five guest VM:s. I've used the following command to setup port mirroring to two of the VM:s ovs-vsctl \ -- --id=@m1 create mirror name=detector \ -- add bridge ...
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0answers
68 views

network switch features recommended for use with open vswitch

I am looking to setup openvswitch to use with a handful (<10) servers and need a couple of ethernet switches to implement this. Are there any features that are recommended to be present in the ...
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1answer
2k views

RTNETLINK answers: Invalid argument while specifying packet loss by tc command

I am trying to specify packet loss by tc command on interface (port) 1 of switch part of network I have created using mininet : sudo tc qdisc change dev s1-eth1 root netem loss 0.1% but gettring ...
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1answer
1k views

configure openvswitch in amazon ec2

i have installed openvswitch-2.3.2 in Amazon EC2 CentOS 6.5, and want to use openvswitch to build a gre tunnel with other PCs. this is the ifconfig output [root@ip-172-31-30-157 openvswitch]# ...
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1answer
128 views

Openvswitch CLI versus network files

There is something I don't get with openvswitch. Let's say that I want to create br0 and a port on eth0. As far as I understand, we can setup a bridge and a port through the network configuration ...
0
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1answer
3k views

QoS/traffic-limit on internal ports in OpenVSwitch

I am currently trying to put traffic control on our OpenStack cloud and my questions in one sentence would be: is it possible at all to rate-limit particular port with type internal? The whole story ...
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0answers
630 views

Traffic Control in OpenStack Neutron with either TC or OpenVSwitch

As far as I know, QoS in OpenStack Neutron is still under development and not production-ready (I could be wrong on this point though, shout at me if so...), but we are required to implement traffic ...
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0answers
1k views

How to set network configuration for openflow on openwrt?

I made a custom build Openwrt (barrier breaker) with Openflow 1.3 and I could connect it to ryo simple_switch_13 controller in outofband mode. Ehternet port number 3 and 4 are set as openflow ports ...
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0answers
378 views

Openvswitch 802.3ad not working properly.

I have set up the catalyst and tested with standard bonding to work normally. bond+bridge had no issues. I then recreated using openvswitch and set bond0 to balance-tcp the 2ndary port is now ...
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0answers
50 views

Can a virtual switch be depatched?

Is it possible to depatch a virtual switch; And is there any point to doing so on a virtual switch?
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3answers
11k views

MTU on Open vSwitch Bridge/Port

How to set MTU value for an Open vSwitch bridge from command line? I have tried man pages, I failed. Thank you.
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1answer
426 views

Newbie to KVM/oVirt/ovs looking for clarity

I have some experience with vSphere, but am looking to get up and running with KVM. I've been looking at using oVirt as a VCenter type manager but, being new to all things server/Linux/virtualisation,...
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1answer
5k views

Proxmox VE Open vSwich configuration?

I am using Proxmox VE 3.3 (which I like very much and have been using for a few years), but cannot seem to make open vSwitch work as per below. I am having trouble getting Open vSwitch working. I ...
2
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1answer
11k views

Proxmox with an Openvswitch bridge

All, I'm trying create a way for me to be able to use the local network within my Proxmox infrastructure. Currently, everything is running off of NAT from wlan0 and all internal machines have the ...
0
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1answer
2k views

Equivalent to TYPE=“OVSPort” DEVICETYPE=“ovs” OVS_BRIDGE=br-ex in Ubuntu 14.04?

Is there an equivalent to TYPE="OVSPort" DEVICETYPE="ovs" OVS_BRIDGE=br-ex in Ubuntu 14.04? The system is OpenStack Icehouse with 3 nodes (controller, network, compute1) each on a VirtualBox Ubuntu ...