sdn

I am using the default PVE IPAM plugin with DHCP. I have one zone with a couple of VNets defined, each with separate subnets and certain reserved IPs: For the sake of this post, assume these are all VMs that are configured with DHCP, so they ask for a lease and normally get those static IPs...

Hello, With the major SDN enhancements introduced in Proxmox 9.0, is it now recommended to use these built-in SDN features to separate Ceph network traffic, rather than relying on traditional VLANs configured through a switch or OPNsense?

Hello, I am having trouble configuring the Vnet Firewall. I have set up a PoC with two hosts. There is one VM on each host, each of which has a service interface and another interface for the NAS. Two VLANs are configured, one for the service and another for the NAS. The intention is that the...

Hallo, einmal eine Anfrage an euch zu dem Problem mit CT (Container) im Proxmox, die ich habe! Ich komme einfach nicht weiter. Screenshot 2025-09-26 091126.png Die Netzwerk Einstellung vom VE Proxmox des Server Master! Screenshot 2025-09-26 091232.png Die SDN Einstellung Screenshot...

Hello, apologies if I miss anything obvious, haven't had to dig this far into things yet and am still finding my way around Proxmox. I have a datacenter with three hosts. SDN is configured with a really basic setup. No firewalls are active anywhere. Two hosts work fine, all VLANs are accessible...

Hi, I have a setup of 3 Racks, each of them having two ToR L3 Switches and at least 1 proxmox Server in each rack. The switches (Mellanox SN2700) cannot do EVPN also being an exit node, so I tried the SDN Feature from Proxmox for our proxmox setup. The switches are fully routed. There is no...

I have never been able to get PVE's SDN functionality working. I have followed many guides on the web and on YouTube. I'm on PVE 9.0.5. When I try to get it to work, the VMs on different hosts can not talk on that SND network I set up. Anyone aware of a tutorial for setting up SDN so multiple...

I have been struggling with an IPv6 routing issue for about 6 months now, looked up tremendous amounts of forum threads and Claude AI-chats, but nothing solved my issue. The setup worked perfectly until late last year, then suddenly stopped working without any configuration changes on my part...

Proxmox 8.4.1 I was trying to add an IPv6 ranges to my SDN setup - so I added an ULA /48 to the vnet, and added a dhcp range. In /etc/pve/sdn/subnets.cfg I see subnet: local-fdaa:b3a8:7e93::-48 vnet vnet0 dhcp-range...

Hello everyone, am facing an issue with an phpipam and self signed certificates. When I add an external IPAM system to Proxmox IPAM section I have the possibility to add a fingerprint of the certificate, which works fine, but if I try to add a VNET with a subnet and dhcp pool I receive an error...

hi all just looking for information about the SDN and the interfaces it creates. I have created a vlan SDN on bond0 but its created 4 interfaces instead of the expected 2 13: ln_example@pr_example: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master example state UP mode DEFAULT...

Hi all! I've installed the new PVE 9 on a small testing machine, made all the updates from the no-subscription repository and installed dnsmasq and disabled the service. I intend to use it as DHCP and DNS in the SDN zones. All following steps are without any VLAN. ERROR: The containers don't...

Hi All, I have run into curious behavior of DHCP under SDN. I have followed the setup based on this page https://pve.proxmox.com/wiki/Setup_Simple_Zone_With_SNAT_and_DHCP. My vmbr0 is 172.31.255.240/28 with DHCP range 172.31.255.241-172.31.255.249 When I start VM the network interface doesn't...

Hi. I'm working on automating my homelab setup with Ansible and the PVE API. I'm using the new SDN fabrics in PVE 9, and I've been able to set up my OSPF fabric manually. However, when I try to do the same with the API I get a bit stuck. I'm able to create a fabric node if I don't specify...

I'm am not new to hypervisors, but I am new to Proxmox. I'm trying to build a proof of concept for my enterprise, and I'm attempting to follow best practices so not to hate myself down the road. I'm running into some advanced network configuration issues, and I am not finding clear directions...

Hi, So I managed to get my NAT setup for my VMs using a SDN. To lock down the environment, I've setup Tailscale on the PVE host and I was using ufw to only allow incomingi connections via the tailscale0 interface. Here's my ruleset: $ ufw status verbose Status: active Logging: on (low)...

I have a working EVPN setup, now I want the host to be able to access services hosted on the subnet. The problem is hosts are only able to access IPs of VM/CTs that is on themselves. Say an EVPN VNet Subnet 192.168.20.0/24, the relevant routing table entries on Node A then looks like...

[Hope I'm not doing anything wrong here, but this post was awaiting admin approval before it could be shown publicly and I'm not quite sure why, please let me know if this breaks any rules] Hi, I've been scouring the forums for a solution that would allow me to use the DHCP plugin (only for...

Please add the “cost” parameter in SDN/Fabrics for OSPF/interfaces. The manually added “cost” parameter is removed after modification from the GUI.

Hi My question is whether it's possible to connect an external server to the Promox SDN, which is on the same hardware switch I don't get any generated response on Google, but I don't see it in the original documentation