Questions tagged [openvswitch]
The openvswitch tag has no usage guidance.
53
questions with no upvoted or accepted answers
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answer
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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 ...
3
votes
0
answers
958
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....
- 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
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
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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
2
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0
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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
2
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0
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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
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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
1
vote
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
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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
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0
answers
274
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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
vote
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
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0
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327
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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
vote
0
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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 ...
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1
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0
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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
1
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0
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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:
...
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1
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0
answers
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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1
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0
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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
1
vote
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
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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
1
vote
0
answers
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
1
vote
1
answer
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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0
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0
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38
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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 ...
0
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0
answers
35
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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:/...
- 1
0
votes
0
answers
39
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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 ...
0
votes
0
answers
39
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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 ...
- 1
0
votes
0
answers
58
views
Nothing but DHCP works after testing SR-IOV on Mellanox ConnectX-4 Lx
I was following the Proxmox guide for enabling PCIe passthrough and SR-IOV for my NIC, since I am running Vyos in a VM as a router. However, after undoing all the changes the NIC is not working ...
0
votes
0
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83
views
OVS switch and Tap interface- Connecting two vm using tap interface-ubuntu
I want to connect 2 VM together using tap interface on Ubuntu.
VM2 will connect to VM1 by a tap interface on VM1.
I will use OVS switch to forward traffic from VM1 to VM2.
Scenario:
Router from ISP ...
0
votes
0
answers
27
views
Ingress traffic shaping with OVS port
I have a ovs topology like this:
h1
|
|
[SW 1]
/ \
/ \
[SW 2] [SW 3]
\ /
\ /
[SW 4]
|
|
h2
Traffic is sent ...
- 1
0
votes
0
answers
21
views
Traffic shaping for multipath routing in OVS
I'm working with OVS and tried multipath routing using group tables like in this link: https://github.com/PSIB0T/Multipath-Routing. It splits traffic to buckets with output is different ports.
At ...
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0
votes
1
answer
144
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 ...
- 123
0
votes
0
answers
67
views
Weave net empty flows for OpenvSwitch
I have 2 containers c1/c2 on 2 separate hosts and I am running Weave Net docker plugin with multicast and fastdp enabled.
Both containers can communicate fine on the underlay network both in unicast ...
0
votes
0
answers
167
views
Open VSwitch - Connect two virtual networks through two physical networks
I managed to setup the following network configuration :
HOST1 and HOST2 are two physical machines running Debian OS.
They have both two network cards (eth0 and eth1), each of them connected to two ...
- 111
0
votes
0
answers
188
views
GTP-U configuration in OVS
I'm trying to configure a virtual GTP-U interface in OVS, however when I try the below command (from https://docs.openvswitch.org/en/latest/faq/configuration/):
Q: Does Open vSwitch support GTP-U?
A: ...
- 478
0
votes
0
answers
84
views
Tracing a packet across a DNAT boundary and into OpenVSwitch
I am trying to figure out where a connection is getting dropped in a complex SDN environment that involves a combination of nftables rules and an OpenVSwitch switch with complex flow rules.
I have a ...
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0
votes
0
answers
95
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 ...
0
votes
0
answers
99
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 ...
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0
votes
0
answers
93
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 ...
0
votes
1
answer
600
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 ...
- 1
0
votes
0
answers
864
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&...
- 11
0
votes
1
answer
681
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 ...
0
votes
0
answers
976
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 ...
- 301
0
votes
1
answer
307
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 ...
0
votes
1
answer
3k
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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
0
votes
1
answer
143
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 ...
- 123
0
votes
0
answers
726
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 ...
- 133
0
votes
1
answer
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
votes
0
answers
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
0
answers
3k
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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-...
