Unable to ping VM in Proxmox

Akubra

Member
Jul 30, 2023
10
1
8
I'm working on a Proxmox 8 server with 4 NICs, port 1 dedicated to management (vmbr0) , port 2 and 3 bonded (active/active) for VMs running in Proxmox (vmbr1) and 1 spare.
I now a couple of VMs running but they all seem to have the same issue. From those VMs I can ping other VMs on the network which are not in Proxmox but vice versa won't work nor something like RDP.
The VMs use the virtio network adapters and for testing purposes, the windows firewall is off.
The proxmox server uses 2 bridges and setup is

auto bond0
iface bond0 inet manual
bond-slaves eno2 eno3
bond-miimon 100
bond-mode balance-rr


auto vmbr0
iface vmbr0 inet static
address 10.17.100.51/26
gateway 10.17.100.56
bridge-ports eno1
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094



auto vmbr1
iface vmbr1 inet static
bridge-ports bond0
bridge-stp of
bridge-fd 0
[FONT=Calibri]bridge-vids 2[/FONT]



In the Proxmox setup for the VM's , the NIC has the firewall disabled and tagged for vlan 2
 
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