RedHat networking

Bonding

In this example we configure two bonds.

bond0 : Failover (eno1/bond0_slave1 and eno3/bond0_slave2) bond1 : LACP

/etc/modprobe.d/bonding.conf

alias netdev-bond0 bonding
options bond0 miimon=100 mode=active-backup updelay=0 downdelay=0 primary=bond0_slave1

alias netdev-bond1 bonding
options bond1 miimon=100 mode=4 lacp_rate=1

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

DEVICE=bond0
TYPE=Bond
BONDING_MASTER=yes
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
NAME=bond0
UUID=9e2088b8-4cfe-435a-b0a2-9387f0fc8024
ONBOOT=yes
DNS1=172.16.0.69
BONDING_OPTS="miimon=100 updelay=0 downdelay=0 mode=active-backup primary=bond0_slave1"
IPADDR=172.16.0.105
PREFIX=16
GATEWAY=172.16.0.1

/etc/sysconfig/network-scripts/ifcfg-bond0_slave1

HWADDR=94:18:82:80:C2:18
TYPE=Ethernet
NAME=bond0_slave1
UUID=a03819df-0715-455d-9726-9348cdbd45c9
DEVICE=eno1
ONBOOT=yes
MASTER=bond0
SLAVE=yes

/etc/sysconfig/network-scripts/ifcfg-bond0_slave2

HWADDR=94:18:82:80:C2:1A
TYPE=Ethernet
NAME=bond0_slave2
UUID=a03819df-0715-455d-9726-9348cdbd45c9
DEVICE=eno3
ONBOOT=yes
MASTER=bond0
SLAVE=yes

Check state of bond0

# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eno1
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: eno1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 94:18:82:80:c2:18
Slave queue ID: 0

Slave Interface: eno3
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 94:18:82:80:c2:1a
Slave queue ID: 0

/etc/sysconfig/network-scripts/ifcfg-bond1

DEVICE=bond1
TYPE=Bond
BONDING_MASTER=yes
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
NAME=bond1
UUID=c9a4bce2-5dbe-4cf9-beb6-34a24512ae23
ONBOOT=yes
BONDING_OPTS="mode=4 miimon=100 lacp_rate=1"
IPADDR=172.20.0.30
PREFIX=24

/etc/sysconfig/network-scripts/ifcfg-bond1_slave1

TYPE=Ethernet
NAME=bond1_slave1
UUID=9ad3a93f-362e-4a18-bb2e-c4588e666e12
ONBOOT=yes
MASTER=bond1
SLAVE=yes
MACADDR=14:02:ec:8e:f3:24
MTU=1500
DEVICE=eno49

/etc/sysconfig/network-scripts/ifcfg-bond1_slave2

TYPE=Ethernet
NAME=bond1_slave2
UUID=6d8015ef-fe60-472a-b18f-17caf952e45b
ONBOOT=yes
#MASTER=c9a4bce2-5dbe-4cf9-beb6-34a24512ae23
MASTER=bond1
SLAVE=yes
MACADDR=14:02:ec:8e:f3:24
MTU=1500
DEVICE=eno50

Check state of bond1

# cat /proc/net/bonding/bond1
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

802.3ad info
LACP rate: fast
Min links: 0
Aggregator selection policy (ad_select): stable
Active Aggregator Info:
	Aggregator ID: 2
	Number of ports: 2
	Actor Key: 13
	Partner Key: 70
	Partner Mac Address: 01:e0:52:00:00:02

Slave Interface: eno49
MII Status: up
Speed: 10000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 14:02:ec:8e:f3:24
Slave queue ID: 0
Aggregator ID: 2
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0
details actor lacp pdu:
    system priority: 0
    port key: 13
    port priority: 255
    port number: 1
    port state: 63
details partner lacp pdu:
    system priority: 32768
    oper key: 70
    port priority: 32768
    port number: 534
    port state: 63

Slave Interface: eno50
MII Status: up
Speed: 10000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 14:02:ec:8e:f3:24
Slave queue ID: 0
Aggregator ID: 2
Actor Churn State: none
Partner Churn State: none
Actor Churned Count: 0
Partner Churned Count: 0
details actor lacp pdu:
    system priority: 0
    port key: 13
    port priority: 255
    port number: 2
    port state: 63
details partner lacp pdu:
    system priority: 32768
    oper key: 70
    port priority: 32768
    port number: 1046
    port state: 63