1. I

    ovs made bond with vlan and custom mtu

    Hi! I apologize to open up another lot-discussed-topic, at the moment everything looks to me working well but still i would like to get confirmation if my thinking is good and specific configuration is good. My effort is computer has four physical interfaces and two of them are 10g and...
  2. aPollO

    openvswitch-switch Upgrade bricht Netzwerk

    Hallo, ich habe heute gesehen, dass das Paket openvswitch-switch inzwischen aus den Proxmox Quellen ausgeliefert wird. Am 19.01. und 01.02. scheint das aber nicht der Fall gewesen zu sein. Das Paket aus den PVE Quellen triggert keinen Neustart der OVS Interfaces. Das Paket aus den Debian...
  3. A

    Problem with VLAN tags

    There are seven servers in my data center. Each has eight network interfaces. Each physical pair of interfaces is bonded (OVS Bond) with Bond Mode - LACP (balance-slb). In turn, each bond is combined into a vmbr (OVS Bridge). Two different servers have one PfSense virtual router virtual machine...
  4. D

    [SOLVED] WARNING: CPU: 0 PID: ... [openvswitch]

    Hello, since upgrading to Kernel 5.15.35 I have following warning (and a second similar one) during boot: May 15 17:04:57 pve-2 kernel: WARNING: CPU: 0 PID: 1228 at include/net/netfilter/nf_conntrack.h:175 __ovs_ct_lookup+0x907/0xa40 [openvswitch] May 15 17:04:57 pve-2 kernel: Modules linked...
  5. M

    OVS Bridge Full Mesh with VLAN support

    Hello, I'm using OVS configured for supporting 3 node cluster with full mesh connection (it's basically copied from wiki and it works perfectly). The problem that I'm facing now is separation of networks for different intention - I have an iSCSI share on one of the server nodes and I'd like to...
  6. L

    Doubt in configuration using OVS; duplicate macadress when using OVSINTPORT

    Hello all, I'm a new starter in proxmox, and I have a doubt regarding OVS and SDN. I have two proxmox servers, each one dual port NIC My doubt, first regarding OVS: 1- created two OVS bridges on each proxmox server, using a dual port NIC, but one OVS bridge associated with one port, and second...
  7. F

    ovs_bridge for first interface + DHCP for VMs?

    Hi there, I am really new to all of this so excuse the question, if too stupid :) I want to use OVS and I understood that PVE needs a static IP. I replaced the basic linux bridge with OVS and it works just fine. /etc/network/interfaces (part of) auto lo iface lo inet loopback auto enp9s0...
  8. F

    OVS_bridge for first interface + DHCP for VMs?

    wrong forum now here
  9. S

    [ovs] mtu on several devices are "wrong" after a reboot

    Hey there, after testing the behavior a bit, there are probably two bugs I noticed. One "bug" is resolved with an ifreload or with ifup -a. 1. A ovs_bonds Interface have the mtu of 1500 - despite setting it to 9000 (ovs_mtu 9000). netstat -i (only bond0 and vmbr9) Kernel Interface table Iface...
  10. K

    [SOLVED] OVS - Problem with MTU 9000 on VMs assigned to vmbr0

    I'm investigating the issue what MTU over 1500 doesn't work for me from the (Windows) VM (works fine from the host, and I've set the MTU in adapter properties within the OS). While looking into it, I've noticed that if VM is assigned to vmbr0 than fw* interfaces will have MTU 1500 but if I...
  11. M

    ARP resolution not working while using Firewall and OVS

    PVE 7.1-10 Kernel: Linux 5.15.19-1-pve #1 SMP PVE 5.15.19-1 I have created two vms (id 9000, ip and 9001 IP with ubuntu linux 20.04 on a proxmox 7.1-10 cluster. Both vms have proxmox firewall settings enabled (see configuration below), also the cluster has...
  12. M

    Open vSwitch (OvS) not working with Proxmox 7.1

    I'm encountering issues with ovs on a brand new setup of a Proxmox 7.1 Server. What I did: 1. Installed current Proxmox 7.1 2. Changed proxmox apt packages sources.list to "pve-no-subscription" 3. apt update 3. apt full-upgrade 4. apt install openvswitch-switch 5. Adatped the...
  13. J

    [SOLVED] Throughput issues across VLANs with OVS and virtualized pfSense, is my network configuration the problem?

    I'm trying to hunt down a network throughput issue I'm having in my virtualized environment. It was suggested that perhaps my OVS config could be to blame and so I wanted to get a sanity check on what I'm working with. X-post...
  14. N

    [SOLVED] Error ovs multicast in new PVE 7.0-13 cluster install

    Hello! I have fresh cluster install, 5 nodes. I have all last updates. pve-manager/7.0-13/7aa7e488 (running kernel: 5.11.22-5-pve) Setup is 5 IBM blades and CISCO 3110G stack for LACP. If i have "classic" network with linux, a new node can join. If i use ovs config - node cant join and get...
  15. D

    [SOLVED] ifupdown2: ovs_extra parameter

    After upgrading to ifupdown to ifupdown2 (as part of PVE7), I have a problem to configure NetFlow with ovs_extra in /etc/network/interfaces. Following statement worked in ifupdown: ovs_extra --id=@nf create NetFlow targets=\"\" active_timeout=60 -- set Bridge vmbr0 netflow=@nf In...
  16. K

    Protect the KIDS! Simple vm to vm config

    Hey, I just want a internal (virtuell) connection between tow VMs. is it Possible to creat that without OVS (Open Virtuell switch) ? Have a nice day.
  17. C

    [SOLVED] OVS bond+bridge: all ports of bond are down

    Hello, I have configured an OVS bond+bridge with 2 ports belonging to the bond. Here's the relevant configuration in /etc/network/interfaces: source /etc/network/interfaces.d/* auto lo iface lo inet loopback auto eno1 allow-vmbr0 eno1 ##eno1 auto enp4s0f3 allow-vmbr0 enp4s0f3 ##enp4s0f3...
  18. C

    Static route required with OVS bond+bridge

    Hello, I have 2 routers in my network, and therefore I need a static route for a dedicated subnet. My idea was to add this line in /etc/network/interfaces: post-up ip route add <network> via <ip router> dev <interface> onlink However the static route is not shown correctly when checking with...
  19. C

    [SOLVED] Configuration OVS bond + bridge + internal ports

    Hello, I try to configure an OVS bond + bridge + internal ports with my new Proxmox VE 7.0 installation. However, this fails although a follow the example available in relevant wiki page. This is my current /etc/network/interfaces: source /etc/network/interfaces.d/* auto lo iface lo inet...
  20. N

    Periodic packet loss

    Hi all! I have 2 standalone servers with lastest proxmox ve. Each server has two ethernet adapters, they bonded and bridged via openvSwitch with config: auto eno1np0 iface eno1np0 inet manual auto eno2np1 iface eno2np1 inet manual auto bond0 iface bond0 inet manual ovs_bonds eno1np0...


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get your own in 60 seconds.

Buy now!