VMs suddenly lose connection


New Member
Sep 17, 2023
Hi everybody,

this is basic scenario:

node1: vlanX subnet1
VMs: vlanY subnet2 - goes down

node2: vlanX subnet1
VMs: vlanY subnet2 - goes down
VMs: vlanZ subnet3 - works

It is happening ALL VMs in subnet2 became unavailable. subnet1 and subnet3 are still working fine.

Not really sure this is related to proxmox installation itself, just wondering if under some conditions (example some network attack to spefic subnet) this can happen.

Nodes load / network usage is normal.
The issue happens at the same time on different nodes. Node reboot did not help. The issue disapper with no other actions.



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