network

  1. B

    OPNSense VM Low Inter-VLAN throughput, SR-IOV the play?

    I am running an opensense VM in proxmox and while VM-VM throughput on the same VLAN can do ~32Gbps, routing across VLANs incur a 94% penalty dropping it to 2Gbps. I understand this is a limitation of emulating a L3 switch through software in which these devices typically have tailor-made ASICs...
  2. S

    VMs cant reach Github etc..

    Hello! I don´t know if this is the place to post this issue but if it isnt please refer me to where I can get help with this I am quite new to Proxmox and its inner workings. I´ve setup a couple of VMs and want to browse to Github but noticed I cant. Its not only Github but reddit, cloudflare...
  3. P

    Where does Proxmox get the gateway IP?

    Hi, pardon my lack of networking understanding. I have vmbr0 assigned an IP, say, 10.10.10.10/24 with gateway 10.10.10.1. I then want to tag vlans on on bridge. So I try to create vmbr0.1080 with an IP 10.10.11.11/24 in vlan 1080 but if I specify vlan 1080 gateway IP in the web UI, it throws...
  4. M

    Network lost after powerloss

    I've had a powerloss with my home test cluster of 3 N100 machines. 2 work as expected with nog problems. 1 doens't connect to the network anymore. When i do ifreload -av i get the following output. In image because i have no connection with the machine other than via hdmi i think it has to...
  5. P

    Proxmox host traffic routing issue

    I have an issue with my current network setup that for some reason is preventing the Proxmox host traffic to be routed back correctly to a Linux bridge. I have OPNsense virtualized and behind it a private internal LAN network. I am using HAProxy to proxy my services externally using a private...
  6. UdoB

    [TUTORIAL] FabU: no network connectivity after installation (or after switching the router) = can not load the Web Gui in a browser

    05.01.2025 - work-in-progress = definitely not complete... During installation you were asked for Hostname(FQDN), IP address, Netmask, Gateway and DNS Server. The values you enter must fit to your local network. You can not simply wish to use a random IP address like 1.1.1.1 ;-) Assumption...
  7. R

    correct conf behind NAT?

    I am experiencing an issue with my Nginx setup on Proxmox. All services work fine for the external network—if I try to visit abc.mydomain.com, which is pointed to my Proxmox server, it works as expected. However, when I try to access the site from the internal network, it does not work. I am...
  8. A

    SDN : Mismatch AFI with BGP controller IPv6 session?

    Hello, I try to setup a IPv6 plage into my EVPN zone (shared into 3 PVE in my cluster). I configure the IPv6 subet on the Vnet and it's working. I can ping the gateway from VM/LXC with this Vnet associted. My 3 PVEs are exit-node and share prefixes with my network via a BGP controller (to...
  9. J

    How to disable the restriction of SDN DHCP server

    I want to use SDN's DHCP to assign IP addresses to the virtual machine's tap device, but I find the dnsmasq config file which managed by PVE itself has this optiondhcp-ignore=tag:!know. So if the MAC address is not in the list of addresses assigned by PVE, the DHCP server can only receive the...
  10. S

    Windows VM network speed dropping over time

    I have a persistent issue where a windows VM (only one I know of with this issue) has a persistent problem of the network speed dropping after a period of time. I'm using VirtIO with multiqueue and I get 10Gb speeds as expected, but after a few hours, the speed seems to drop to become capped at...
  11. 0

    network connection to proxmox server cuts out when enabling bridge in vm?

    hello, i'm working on setting up a network bridge in a proxmox VM running rocky 9.5. a test bridge br0 created with iproute2 works fine. when i try to create a similar persistent bridge using nmcli per...
  12. A

    Network card missing

    I did setup a new promox node, and after setting up nic to a VM as hostpci other nics are gone from my setup. they should work as bond1 and vmbr1. root@pve2:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd...
  13. M

    [SOLVED] Can't connect to the Internet using Intel 82599 Huawei SP310 X520-DA2

    Hello Until now, I have been using the RJ45 port on the motherboard, but I purchased the X520-DA2 and SF10G-AOC-01 to support 10G. However, when I connect only the SFP port, I cannot access the Internet or other local devices. I will write the interfaces file. enp4s0 is the RJ45 port, and...
  14. P

    [SOLVED] Issue Building RTL8814AU Driver on Proxmox PMX 6.8.4-2 Due to Missing net/ipx.h

    Hello Proxmox Community, I am experiencing an issue while attempting to install the RTL8814AU driver on my Proxmox system. Below are the details of my setup and the problem: Operating System: Proxmox VE PMX 6.8.4-2 (2024-04-10T17:36Z) x86_64 GNU/Linux apt repositories Configured: deb...
  15. C

    No Connection after unplugging GPU

    My GPU is really loud and as this is supposed to be a server I do not need it. But after I unplugged it, I couldn‘t connect to the WebGUI, so I plugged it back in and everything worked again. And yes, I know about network names changing when adding or removing PCIe devices, but that doesn‘t...
  16. S

    Live migration mac address release issue

    We are testing the live migration on 8.3.0 between both clusters and we're running into one issue we can't seem to find a good resolution to. Whenever we migrate a machine it can't pull networking because for some reason the arp table on the source is still holding on to the mac address. We've...
  17. A

    Confirming VM Networking and Public IP Behavior in Proxmox Setup

    Hello, I want to confirm if my current Proxmox networking setup is configured correctly and working as expected. Here's the scenario: I have a Proxmox server with a public IP assigned (e.g., 103.xxx.xxx.244) on vmbr0. My organization uses a Sophos firewall for routing and NAT. The firewall...
  18. G

    is there port blocking or a weird firewall rule?

    i run rtsp surveillance cameras using port 554. the same machine running windows ran/connected to the cameras just fine, but after installing proxmox and a windows VM it can only see port 80? yes i have disabled the VM firewall in the VM not the host or datacenter tab. any tips?
  19. S

    The right way to configure network

    I am struggeling to find the right way to configure my network. Information: Network First Node <--> Switch (unmanaged and dumb) <--> Second Node First Node 4 CT Vlan 80 1 CT Vlan 40 1 Vm Vlan 20 Network bond1 NIC1 NIC2 NIC3 NIC4...
  20. P

    Proxmox als Switch

    Hi, ich habe Opnsense auf Proxmox laufen und zwei Interfaces auf dem Server: WAN (eth01 - vmbr0) und LAN1 (eth02 - vmbr1). Über Opnsense habe ich mehrere VLANs (LAN1 als Parent) konfiguriert sodass mein Switch der über LAN angeschlossen ist, Geräte zuweisen kann. Ich habe aber noch weitere...

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