Questions tagged [openvswitch]
The openvswitch tag has no usage guidance.
106
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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
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2
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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 ...
- 141
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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
0
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976
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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 ...
- 301
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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
0
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307
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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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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
2
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967
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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
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379
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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
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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
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693
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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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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
0
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2
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813
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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 ...
- 101
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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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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 ...
- 101
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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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1
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143
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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 ...
- 123
0
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3k
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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 ...
- 133
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0
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726
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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 ...
- 133
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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 ...
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0
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464
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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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54
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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
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3
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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
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450
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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,...
- 113
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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 ...
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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
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2k
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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 ...
0
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1
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407
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Can we provide an stack of IP's to the Open Vswitch to pick the IP?
I have started learning virtualization using KVM hypervisor and trying to set-up virtual cluster on the host machine.However from the tutorials on the internet states that the VM connected to OVS ...
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0
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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
-1
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1
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799
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Hosts cannot ping in two name spaces using Open Vswitch
I have two name spaces red and blue. Red is connected to host1, and blue is connected to host2,
but these two hosts cannot ping each other. Here is the commands that I put:
ip link add host1 type ...
- 99
2
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1
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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"
...
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0
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Open vSwitch double VLAN tagging is ignored
I'm trying to add a flow to a KVM machine using Open vSwitch 1.10.2 for it's networking, which double tag all traffic comming from one of the virtual machine's ports.
I'm using the following command ...
0
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0
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Packets are not routed by iptables, how to debug
I'm using OpenStack and OVS. This is my case:
From a remote host, I ping VM with IP A.
Local gateway received the echo request, then send a packet with IP A and MAC address A' (based on a fixed IP-...
2
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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
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1
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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
2
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1
answer
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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 ...
1
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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 ...
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1
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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 ...
0
votes
1
answer
979
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Mininet additional veth pair between host and server
For those who don’t know - Mininet is a tool that allows for the automated creation of multiple OVS switches, chroot linux ‘containers’ as hosts and links them all together to prototype OVS powered ...
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Is there a way to emulate a DHCP server (overlay network) [closed]
I have created an overlay Level 2 network using VLAN tags with Open vSwitch. I want a Level 3 one so I need to give each VM a consistent IP address.
I'd like every host on this VLAN to get an IP ...
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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
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Adding eth0 to openvswitch bridge makes internet stop working
Adding my eth0 interface to openvswitch bridge with:
ovs-vsctl add-port br0 eth0
makes me unable to accesso to the internet both on the host and , obviously, on the guest.
How to solve this problem? ...
- 155
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480
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<virtualport type='openvswitch'/> is NOT recognized
In order to make my vm use the openvswitch interface I have to add the following lines to a vm xml config file:
<source bridge='ovsbr'/>
<virtualport type='openvswitch'/>
I edit the ...
- 155
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159
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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
2
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0
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2k
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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
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182
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Is Open vSwitch necessary for my setup?
I've been considering moving my VMware-based dedicated server to Linux using KVM/QEMU. The only major hurdle remaining is networking. My current setup is:
NIC <---> Public vSwitch <---> ...
- 9,595
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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
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772
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No traffic to Xen vif attached to Openvswitch
I'm trying to get my guest VMs to use an openvswitch on Ubuntu 12.04 with 3.8.0-26-generic. I've compiled the most recent stable build Xen 4.3.0 but can only get my guest VMs working with a standard ...
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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
2
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2
answers
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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