Questions tagged [openvswitch]
The openvswitch tag has no usage guidance.
106
questions
13
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2
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connect Open vSwitch switch to real network : iptables masquerade
I'm using Open vSwitch to create a switched network between virtualBox guest machines, and i
want that the host OS (Ubuntu 12.04) join this network and to configure it as the gateway of this virtual ...
- 131
5
votes
1
answer
758
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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 ...
- 238
4
votes
1
answer
622
views
Automating Configuration of VMware's vSwitch (OpenStack/libvirt/Nova)
There's a lot of talk now about VMware integrating with OpenStack now.
I've noticed that Nova network service is working with VMware's standard and vDS.
Deploying a full OpenStack instance is not ...
3
votes
4
answers
654
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 ...
- 41
3
votes
1
answer
5k
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How to make my linux vm attach to an openvswitch bridge?
I am following this tutorial: http://networkstatic.net/wp-content/uploads/2012/04/openvswitch.openflow.gre_.tutorial1.pdf
In brief: br0 is connected to the actual net, br1 is an isolated bridge to ...
- 155
3
votes
1
answer
2k
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How GRE traffic finds way after arrive GRE remote end points (in open vswitch)?
I'm quite new to both network and open vswitch, I'm not sure whether this question is more relevant to open vswitch(ovs) or gre.
belows are ovs settint commands. There are two hosts. Each host has ...
- 183
3
votes
1
answer
2k
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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 ...
- 187
3
votes
0
answers
958
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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....
- 125
3
votes
0
answers
1k
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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 ...
- 264
2
votes
2
answers
4k
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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 ...
- 629
2
votes
1
answer
2k
views
Persistent Network Configuration using KVM and libvirt
Our environment will have a KVM host setup dynamically using kickstart (easy enough).
The hard part is dealing with network configuration and keeping VLAN configuration (and possibly bridge/host ...
2
votes
1
answer
1k
views
How do I block all access to machine except port 3389 using Open vSwitch
I can allow access to the machine and block everything else using:
ovs-ofctl add-flow xenbr0 "dl_src={mac-address} priority=39000 dl_type=0x0800 nw_dst={ip-address} idle_timeout=65000 action=normal"
...
- 465
2
votes
1
answer
764
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 ~]# ...
- 43.8k
2
votes
2
answers
4k
views
openvswitch with multiple vlans
I'm having an issue wrapping my head around a setup. We currently use vmware+vsphere and switching to kvm.
So we want the similar type setup using openvswitch. So our setup will be like
kvm host ip:...
- 22.4k
2
votes
2
answers
4k
views
OpenVSwitch between namespaces
I'm trying to configure a bridge between two TAP interfaces each created inside their own network namespace, on Linux.
I'm using OpenVSwitch as software bridge.
These are the steps that I believe ...
- 158
2
votes
1
answer
1k
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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 ...
2
votes
1
answer
5k
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 ...
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2
votes
1
answer
14k
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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 ...
- 642
2
votes
1
answer
1k
views
GRE Mesh to GRE Star in open virtual switch
i have 3 kvm hosts running open vswitch with many virtual machines.
These vms are on two separate tenants and GRE tunnel carries private traffic between these 3 hosts.
But is there a better way to ...
- 757
2
votes
1
answer
371
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 ...
- 121
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 ...
- 583
2
votes
0
answers
967
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 ...
- 21
2
votes
0
answers
54
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?
- 4,879
2
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0
answers
3k
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How Open-VSwitch bridge assigns IP addresses to guest when used on KVM hypervisor?
I have setup ovs switch on ubuntu and configured network xml and guest VM xml files respectively(Set-up for KVM hypervisor).
Created new network for openVswitch by creating and defining new vlans.xml
...
- 121
2
votes
0
answers
2k
views
access tap interface in network namespace across machines
I want to be able to access services running on a TAP interface within a namespace from outside the machine where it is running. I have setup that looks like this -
VM1/Machine1
+eth0 : Public ...
- 143
1
vote
3
answers
17k
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.
- 153
1
vote
1
answer
10k
views
Deleting port on one openvswitch bridge causes change in MAC address on another bridge
I am trying to set an explicit MAC address on an openvswitch bridge
named br-ex. I am running Fedora 20 and using the native
ifdown/ifup commands to configure the bridge (details of my
network ...
- 43.8k
1
vote
1
answer
404
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 ...
- 163
1
vote
1
answer
3k
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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 ...
- 143
1
vote
1
answer
2k
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Openstack Neutron stabilty problems
I have a fairly simple Openstack setup for a PoC. 2 nodes, both running Nova, and everything else on node 1. It is running CentOS 6 and was set up using RDO. Importantly I am using Neutron for the ...
- 523
1
vote
1
answer
2k
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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 ...
- 21
1
vote
1
answer
726
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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 ...
- 125
1
vote
1
answer
694
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.
...
- 21
1
vote
1
answer
3k
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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 ( ...
- 111
1
vote
1
answer
2k
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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 ...
- 29
1
vote
1
answer
3k
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-...
- 152
1
vote
1
answer
3k
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Does Open vSwitch put attached interfaces into promiscuous mode?
When I use Linux bridging to bridge a virtual machine to a physical NIC, I have to explicitly set the NIC to promiscuous mode so that ethernet frames that were destined for the VM would make it to the ...
- 5,038
1
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1
answer
99
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/...
- 11
1
vote
0
answers
179
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 ...
- 37
1
vote
0
answers
274
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 ...
- 11
1
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0
answers
801
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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 ...
- 163
1
vote
0
answers
327
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. ...
- 629
1
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0
answers
142
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 ...
- 21
1
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0
answers
30
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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 ?
- 111
1
vote
0
answers
379
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:
...
- 111
1
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0
answers
693
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 ...
- 11
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0
answers
76
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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 ...
- 121
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0
answers
1k
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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 ...
1
vote
0
answers
464
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 ...
- 293
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0
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159
views
open flow controller + openvswitch. how?
I have a computer that's running openvswitch and I want to create a backup.
I'm thinking about moving the controller away from the server on which openvswitch runs, and create multiple openvswitch ...
- 11