8.2.2. Problems with NICS and Vanishing Connections

[JakeBikeIT]

Hi,

I am have a very odd problem with 8.2.2
I have a host with a Bonded interface on balance-rr and VMBR0 looks at Bond0. This pair of interfaces sites on our .55.x ClassC Subnet.

I built the server then have come back to it today to finish the server - I had to migrate the TPM as I've built it raw in a folder - that went well.

But the primary NIC that gives the Windows Server an address on our 55.x subnet is not flowing any trafffic - there are no other problems with this network - and it built and ran fine for days as I was configuring the other services running on it.
Now - its not on the network.

Very odd. The box is in production - so I can't just reboot the host.

Its a licensed Subscription for Enterprise Updates

Its very odd - I've checked actually the NICS get DHCP address from the network. The Proxmox Host management is on the same bond and it works faultlessly. After getting DHCP - no traffic .

I can change the balance-rr to another method - but I don't want to "unmanage" this box.

Any tips please?

 

[JakeBikeIT]

Update - The Link Aggregation on the Switch STOPPED working with Balance-RR - yet it IS working on other hosts and on identical switches.

Is there a better bond mode to use ?