Bugs with VLAN Networking?

Andreas2512

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Mar 1, 2018
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So recently I set up my home network around VLANs...

I wanted to get the proxmox webinterface to vlan 10 instead of untagged ... so I made an SVI and configured it with the desired ip (also on the *beautiful* topology:D) and for the most part that worked just fine.

But if I set up the SVI I get strange performance losses on all vlans over the bridge (for example if I make an internet speedtest I get a normal ping but my upload and download are at around ~1mbit)

Also I configured the vlans on the vms by the vlan tag field on the virtual interfaces. (shown in one of the pictures)

Could somebody please explain me what I'm doing wrong? Would be much appreciated:oops:

topology.png interface.PNG
 

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  • interfaces.txt
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wolfgang

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Hi,

This setting are correct but I would try with virtio nic instead of e1000.
 

Andreas2512

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Hi,

The Interfaces of all VMs are virtio ones, the only e1000 is from the windows vm (which I screenshot *sight*).
 

wolfgang

Proxmox Staff Member
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Do you on the latest version because there where a bug in the vlan device with vlan_aware bridge.
If this do not work with the current version of PVE than check you nic and you switch.
 

Andreas2512

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I have the latest version of ProxMox.

But I have just discovered that if I use only E1000s as Interfaces the internet on the VM's works just fine, however on devices physically attached on enp4s0f0 the problem still accurs.

Why is it sooo buggy?? :(:(
 
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Andreas2512

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Also, I've tried OVS as well but it behaves exactly the same...

My interfaces file now looks like this:

Code:
 auto vmbr0
 iface vmbr0 inet manual
    ovs_type OVSBridge
    ovs_ports enp4s0f0
    ovs_ports enp4s0f0 vmbr0-mgmt

allow-vmbr0 vmbr0-mgmt
iface vmbr0-mgmt inet static
    address  10.0.0.1
    netmask  255.255.255.0
    gateway  10.0.0.254
    ovs_type OVSIntPort
    ovs_bridge vmbr0
    ovs_options tag=10

Furthermore, I turned off MLVPN for now and use pfSense only...with of course no effect
 
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wolfgang

Proxmox Staff Member
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Oct 1, 2014
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What do you use as host network card?
Vendor and Type?
 

Andreas2512

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HP NC375i in an HP DL580 G7. But that should have no effect on the choice of the virtual network adapters or should it?
 
Last edited:

wolfgang

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But that so have no effect on the choice of the virtual network adapters or should it?
That's not true. Virtio network are para vitalized, so if the driver/firmware has problems you vnic has problems too.
The same is counts for all other vnic types.

This is a netxen asic NX3031 and I never test or used it.
I have a quick look in the kernel and there are no know bugs open.

May be you get a firmware update from HP.
 

Andreas2512

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That's not true. Virtio network are para vitalized, so if the driver/firmware has problems you vnic has problems too.
The same is counts for all other vnic types.
Oh ok I didn't know that, interesting.

I will try a firmware update for the server when I have time (probably this evening).
Hopefully this works, getting slightly depressive...:confused:
 

Andreas2512

Member
Mar 1, 2018
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Nope no difference after firmware update..sigh:oops:

Code:
auto lo
iface lo inet loopback

iface enp4s0f1 inet manual

iface enp4s0f2 inet manual

iface enp4s0f3 inet manual

iface enp4s0f0 inet manual

auto vmbr10
iface vmbr10 inet static
        address  10.0.0.1
        netmask  255.255.255.0
        gateway  10.0.0.254
        bridge_ports enp4s0f0.10
        bridge_stp off
        bridge_fd 0

auto vmbr20
iface vmbr20 inet manual
        bridge_ports enp4s0f0.20
        bridge_stp off
        bridge_fd 0

auto vmbr100
iface vmbr100 inet manual
        bridge_ports enp4s0f0.100
        bridge_stp off
        bridge_fd 0

auto vmbr110
iface vmbr110 inet manual
        bridge_ports enp4s0f0.110
        bridge_stp off
        bridge_fd 0
also does not work..
 
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wolfgang

Proxmox Staff Member
Staff member
Oct 1, 2014
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459
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Have you an alternative nic to test?
 
Last edited:

wolfgang

Proxmox Staff Member
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Oct 1, 2014
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You can contact HP and tell them you run on Ubuntu and VLan do not work.
Maybe they have a clue.
 

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