Questions tagged [openvswitch]
The openvswitch tag has no usage guidance.
0
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0answers
21 views
Openvswitch stops working randomly
I have configured OVS with Linux KVM on Ubuntu 18.04 OS. I have done the configuration with different VLAN's in our OVS configuration. Suddenly the OVS switch stops working even though the KVM host is ...
1
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0answers
30 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. ...
0
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0answers
22 views
Openvswitch does not forward transit GRE traffic.
Seems to be that openvswitch on my KVM host doesn't forward transit GRE packets.
I have switch acting as source of ERSPAN traffic, directly connected to the host. This traffic is just unidirectional ...
0
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0answers
15 views
How do I block all access to port 24510 using OpenvSwitch
I try create flow to the machine and block traffic access port 247510 but not working:
ovs-ofctl add-flow br0 "priority=2000,in_port=6,tcp,tcp_dst=24510,actions=drop"
How can I do this?
3
votes
4answers
156 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 ...
0
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0answers
27 views
Redirecting to an IP address using OpnVswitch flow rules
I want to redirect all the traffic coming to my OVS switch to an IP address. Is it possible to do so by adding any ofctl add-flow statements?
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0answers
34 views
Unrecognized options in ovs-ofctl
I cannot use --names or --stats options of the dump-flows subcommand in ovs-ofctl.
ovs-ofctl: unrecognized option '--names'
The binary was fetched using aptitude:
ovs-ofctl (Open vSwitch) 2.5.4
...
1
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0answers
41 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 ...
0
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0answers
29 views
Netflow not captured by flowd
I am trying to capture netflow packets through flowd. I could not see any packets data in log file of flowd.
How can I see netflow data in flowd log file?
I used this command to generate netflow ...
1
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1answer
337 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 ...
1
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2answers
713 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 ...
1
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1answer
1k 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
168 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
183 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
478 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....
1
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1answer
1k 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 ...
0
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2answers
501 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 ...
1
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0answers
740 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 ( ...
0
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0answers
444 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 ...
1
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1answer
914 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 ...
0
votes
1answer
68 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
18 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 ?
1
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0answers
457 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 ...
1
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0answers
2k views
OpenVSwitch LACP bonding test setup problems
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 ...
1
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0answers
308 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:
...
1
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1answer
1k 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-...
1
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0answers
348 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 ...
3
votes
0answers
365 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 ...
0
votes
2answers
439 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 ...
1
vote
0answers
58 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 ...
0
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1answer
979 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 ...
0
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1answer
790 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]# ...
0
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1answer
115 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
2k 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
588 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 ...
1
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0answers
946 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 ...
1
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0answers
336 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 ...
2
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0answers
46 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?
1
vote
3answers
8k 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.
0
votes
1answer
377 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,...
0
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1answer
4k 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
votes
1answer
9k 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
votes
1answer
984 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 ...
0
votes
1answer
233 views
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 ...
2
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0answers
2k views
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
...
-1
votes
1answer
534 views
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 ...
2
votes
1answer
618 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"
...
0
votes
0answers
1k views
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
votes
0answers
2k views
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-...
1
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2answers
2k 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:...
