bonding

CentOS 7

ifcfg-em1

TYPE=Ethernet
DEVICE=em1
NAME=em1
ONBOOT=yes
USERCTL=no
NM_CONTROLLED=no
BOOTPROTO=none
MASTER=bond0
SLAVE=yes

ifcfg-em2

TYPE=Ethernet
DEVICE=em2
NAME=em2
ONBOOT=yes
USERCTL=no
NM_CONTROLLED=no
BOOTPROTO=none
MASTER=bond0
SLAVE=yes

ifcfg-bond0

DEVICE=bond0
ONBOOT=yes
USERCTL=no
BOOTPROTO=none
NM_CONTROLLED=no
BONDING_OPTS="mode=4 miimon=100 xmit_hash_policy=layer2+3"

ifcfg-brbond99

DEVICE=brbond99
NAME=brbond99
ONBOOT=yes
TYPE=Bridge
NM_CONTROLLED=no

ifcfg-bond0.99

DEVICE=bond0.99
ONPARENT=yes
BOOTPROTO=none
NM_CONTROLLED=no
BRIDGE=brbond99
VLAN=yes