Ryfujk

I upgraded to Ubuntu 18.04 and the new Netplan configuration, but my (2) network cards stopped sharing the load evenly. In my network configuration, I have many connections to many different servers; this configuration worked with previous versions of Ubuntu.

My configuration is below:

network:

ethernets:

    enp0s31f6:

        dhcp4: false

    enp1s0:

        dhcp4: false

version: 2

bonds:

    bond0:

         interfaces: [enp0s31f6,enp1s0]

         addresses: [10.0.10.10/16]

         gateway4: 10.0.0.1

         mtu: 9000

         nameservers:

              addresses: [10.0.0.1]

              search: [mydomain.example.com]

         parameters:

                 mode: 802.3ad

                 lacp-rate: fast

                 mii-monitor-interval: 100

However, ifconfig shows uneven distribution of the network load:

bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST>  mtu 9000

    inet 10.0.10.10  netmask 255.255.0.0  broadcast 10.0.255.255

    inet6 fe80::4876:c7ff:fecc:8a73  prefixlen 64  scopeid 0x20<link>

    ether 4a:76:c7:cc:8a:73  txqueuelen 1000  (Ethernet)

    **RX packets 7379403761  bytes 11148965732346 (11.1 TB)**

    RX errors 0  dropped 168862  overruns 8554  frame 0

    **TX packets 504974341  bytes 37356421339 (37.3 GB)**

    TX errors 0  dropped 6 overruns 0  carrier 0  collisions 0



enp0s31f6: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>  mtu 9000

        ether 4a:76:c7:cc:8a:73  txqueuelen 1000  (Ethernet)

        **RX packets 1251616  bytes 107128982 (107.1 MB)**

        RX errors 0  dropped 83864  overruns 0  frame 0

        **TX packets 1120861  bytes 238470225 (238.4 MB)**

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        device interrupt 16  memory 0x92f00000-92f20000  



enp1s0: flags=6211<UP,BROADCAST,RUNNING,SLAVE,MULTICAST>  mtu 9000

        ether 4a:76:c7:cc:8a:73  txqueuelen 1000  (Ethernet)

        **RX packets 7378152145  bytes 11148858603364 (11.1 TB)**

        RX errors 0  dropped 0  overruns 8554  frame 0

        **TX packets 503853480  bytes 37117951114 (37.1 GB)**

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        device memory 0x92e00000-92e1ffff  

Any idea what is wrong with this configuration? Thank you for your help.

The following configuration work fine for me. Running Ubuntu 18.04 ppc64el. And BTW, if you want to use the REAL interface name instead of something like enp0s31f6, just do the following.

vi /etc/default/grub and add this:

GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"

Then rebuilt the boot loader

grub-mkconfig -o /boot/grub/grub.vfg

Reboot the system and You'll get the real nic name like eth0, eth1...
When it's done, edit this file and make sure it fit with your IP's !!!

vi /etc/netplan/01-netcfg.yaml



# This file describes the network interfaces available on your system

# For more information, see netplan(5).

network:

  version: 2

  renderer: networkd

  ethernets:

    eth0:

      match:

        macaddress: 'xx:xx:xx:xx:xx:xx'

      wakeonlan: true

    eth1:

      match:

        macaddress: 'xx:xx:xx:xx:xx:xx'

      wakeonlan: true

  bonds:

    bond0:

      interfaces: [eth0, eth1]

      addresses: [192.168.0.10/24]

      gateway4: 192.168.0.1

      parameters:

        mode: 802.3ad

        lacp-rate: fast

        mii-monitor-interval: 100

      mtu: 9000

      nameservers:

        search: [home.lan],

        addresses: [192.168.0.250]

Then, type netplan try to validate your configuration. If successful, run netplan apply and reboot.