[pve-devel] BUG in vlan aware bridge

[VELARTIS Philipp Dürhammer]

HI,

we use HP Server with Intel Cards or the standard hp nic ( ithink also intel)

Also I see the I did a mistake:

Setup working:
tapX (UNtagged) <- -> vmbr0 <- - > bond0

is correct. (before I had also tagged) 

it should be :

Setup not working:
 tapX (tagged) <- -> vmbr0 <- - > bond0

Setup working:
tapX (untagged) <- -> vmbr0 <- - > bond0

Setup also working:
tapX < - - > vmbr0v350 < -- > bond0.350 < -- > bond0

-----Ursprüngliche Nachricht-----
Von: pve-devel <pve-devel-bounces at lists.proxmox.com> Im Auftrag von Stoyan Marinov
Gesendet: Dienstag, 12. Oktober 2021 13:16
An: Proxmox VE development discussion <pve-devel at lists.proxmox.com>
Betreff: Re: [pve-devel] BUG in vlan aware bridge

I'm having the very same issue with Mellanox ethernet adapters. I don't see this behavior with Intel nics. What network cards do you have?

> On 12 Oct 2021, at 1:48 PM, VELARTIS Philipp Dürhammer <p.duerhammer at velartis.at> wrote:
> 
> HI,
> 
> i am playing around since days because we have strange packet losses.
> Finally I can report following (Linux 5.11.22-4-pve, Proxmox 7, all devices MTU 1500):
> 
> Packet with sizes > 1500 without VLAN working well but at the moment they are Tagged they are dropped by the bond device.
> Netfilter (set to 1) always reassembles the packets when they arrive a bridge. But they don't get fragmented again I they are VLAN tagged. So the bond device drops them. If the bridge is NOT Vlan aware they also get fragmented and it works well.
> 
> Setup not working:
> 
> tapX (tagged) <- -> vmbr0 <- - > bond0
> 
> Setup working:
> 
> tapX (tagged) <- -> vmbr0 <- - > bond0
> 
> Setup also working:
> 
> tapX < - - > vmbr0v350 < -- > bond0.350 < -- > bond0
> 
> Have you got any idea where to search? I don't understand who is in charge of fragmenting packages again if they get reassembled by netfilter. (and why it is not working with vlan aware bridges)
> 
> 
> _______________________________________________
> pve-devel mailing list
> pve-devel at lists.proxmox.com
> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
> 


_______________________________________________
pve-devel mailing list
pve-devel at lists.proxmox.com
https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel