Bonding configuration with LACP in Red Hat

What is LACP?

LACP Link Aggregation (IEEE 802.3ad)

Virtual link aggregation, also called trunking, is a Layer 2 feature, which joins physical ports on the network into a single high-bandwidth data link; In this way, bandwidth capacity is increased and redundant and highly available links are created. If one link fails, the load is redistributed among the remaining links, so operation is continuous. Thanks to the distributed multilink trunking capability, the failure or removal of one stack unit will not cause an entire trunk to go down.

Configuration of network interfaces:

BOND0

cat /etc/sysconfig/network-scripts/ifcfg-bond0

DEVICE=bond0

TYPE=Unknown

IPADDR=192.168.0.229

NETMASK=255.255.255.0

GATEWAY=192.168.0.225

ONBOOT=yes

BOOTPROTO=none

USERCTL=no

BONDING_OPTS=»miimon=100 mode=4″

Configuration of physical interfaces:

cat /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

ONBOOT=yes

BOOTPROTO=none

NM_CONTROLLED=no

MASTER=bond0

SLAVE=yes

USERCTL=no
cat /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1

ONBOOT=yes

BOOTPROTO=none

NM_CONTROLLED=no

MASTER=bond0

SLAVE=yes

USERCTL=no

Module configuration:

cat /etc/modprobe.d/bonding.conf

alias netdev-bond0 bonding

options bond0 miimon=100 mode=4 lacp_rate=1

If this configuration does not work, try the following:

cat /etc/modprobe.d/bonding.conf

alias bond0 bonding

options bond0 miimon=100 mode=4 lacp_rate=1

We restart the network service:

systemctl restart network.service

If it doesn't work, we can try to restart or see the module configuration in case there is an error.

Restart module:

modprobe -r bonding

Verify module configuration:

modinfo bonding

All the best.