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teamed nics setup

Last edited by clayton craft

With the move to 10GbE networking between switches, configured in a star topology with a 10GbE switch in the center, it is desirable to use NIC bonding on the master's two 10GbE NICs. The method below uses systemd-networkd

Create a new file under /etc/systemd/network/bond.network:

[Unit]
Description=Bond interface

[Match]
Name=eth4
Name=eth5

[Network]
Bond=bond0

Create a new file under /etc/systemd/network/bond0.netdev:

[NetDev]
Name=bond0
Kind=bond

Create a new file under /etc/systemd/network/bond0.network:

[Match]
Name=bond0

[Network]
DHCP=no
Address=192.168.1.1/24
DNS=192.168.1.1

Then restart systemd-networkd: systemctl restart systemd-networkd

Previous method

With the addition of 10Gb-E optical networking, the master is no longer configured to team nics.

Teamed NICs Setup on Debian

Here is the command history for setting up the teamed NICs:

sudo apt-get install ifenslave
ifconfig

at this point, you can reboot and set up the pair. Edit /etc/network/interfaces. Read iptables setup to understand the /etc/iptables-rules line:

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual
bond-master bond0

auto eth1
iface eth1 inet manual
bond-master bond0

auto bond0
iface bond0 inet static
   address 192.168.1.1
   netmask 255.255.255.0
   pre-up iptables-restore < /etc/iptables-rules       
bond-mode balance-xor
bond-miimon 100
bond-slaves none

At this point, you reboot and check the setup:

cat /proc/net/bonding/bond0
cd /proc/net/bonding
# I used iperf to check the speed of the pair.  You will probably have to do some googling to use it.
sudo apt-get install iperf
iperf -c 10.23.115.29 -i 2
# check the speed of the nics
sudo apt-get install ethtool
ethtool eth0 | grep -i spee

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