How to set NIC bonding in Linux through nmcli command

Purpose

This simple instruction for NIC bonding is for roughly check on platform SKY8101 QSL

Target Audience

For users who are using Linux OS and would like to bond two ethernet ports for different network types

Steps

## Environment Info

Platform : SKY-8101 + Perscard 1221 (X550 dual 10G base-T)
OS : Advantech BSP: sky8101_qsl_standard_1.00
Kernel : 3.10.0-693.2.2.el7.x86_64
Driver :
driver: ixgbe
version: 5.2.3
firmware-version: 0x80000289

## Steps for Bond Check ##

(1) Start NetworkManager Service

# systemctl start NetworkManager

(2) Check connection state

# nmcli connection show
NAME UUID TYPE DEVICE 
Wired connection 3 566fb2c0-fb49-3f25-b0c3-8272d656a4ca 802-3-ethernet eth0_mgmt1 
Wired connection 4 14aacd68-12b0-3136-b71b-369d5401a935 802-3-ethernet eth4 
Wired connection 5 aa7f78eb-51f3-3985-b3af-a6b6dd2375c3 802-3-ethernet eth5 
Wired connection 1 a7ac483b-7697-335e-9f39-1438b6cdfe3d 802-3-ethernet -- 
Wired connection 2 46668b49-9655-36ba-8845-e91746f94b4e 802-3-ethernet --

(3) Add bond interface with mode 1 (Active / Backup)

# nmcli connection add type bond ifname bond0 mode 1

(4) Bond two ports (eth4 / eth5) to bond0

# nmcli connection add type bond-slave ifname eth4 master bond0
# nmcli connection add type bond-slave ifname eth5 master bond0

(5) Recheck connection state

# nmcli connection show
NAME UUID TYPE DEVICE 
Wired connection 3 566fb2c0-fb49-3f25-b0c3-8272d656a4ca 802-3-ethernet eth0_mgmt1 
bond-bond0 90e8f84e-5eaa-4b51-a3c0-cf9a1b04113e bond bond0 
bond-slave-eth4 cf462d5b-7a6b-4c8c-9165-0d01d2936a70 802-3-ethernet eth4 
bond-slave-eth5 7a9e3290-c79c-4544-a6bc-c30776bc95c7 802-3-ethernet eth5 
Wired connection 1 a7ac483b-7697-335e-9f39-1438b6cdfe3d 802-3-ethernet -- 
Wired connection 2 46668b49-9655-36ba-8845-e91746f94b4e 802-3-ethernet -- 
Wired connection 4 14aacd68-12b0-3136-b71b-369d5401a935 802-3-ethernet -- 
Wired connection 5 aa7f78eb-51f3-3985-b3af-a6b6dd2375c3 802-3-ethernet --

(6) Restar network service

# systemctl restart network.service

(7) Stop NetworkManager Service

# systemctl stop NetworkManager

(8) Check Bond0 Status

# cat /proc/net/bonding/bond0

*** Original ***

[root@sky-8101 ~]# 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: eth4
 MII Status: up
 MII Polling Interval (ms): 100
 Up Delay (ms): 0
 Down Delay (ms): 0

Slave Interface: eth4
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 0
 Permanent HW addr: 74:fe:48:09:3a:f9
 Slave queue ID: 0

Slave Interface: eth5
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 0
 Permanent HW addr: 74:fe:48:09:3a:fa
 Slave queue ID: 0

*** physical remove eth4 , wait few seconds ***

[root@sky-8101 ~]# 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: eth5
 MII Status: up
 MII Polling Interval (ms): 100
 Up Delay (ms): 0
 Down Delay (ms): 0

Slave Interface: eth4
 MII Status: down
 Speed: Unknown
 Duplex: Unknown
 Link Failure Count: 0
 Permanent HW addr: 74:fe:48:09:3a:f9
 Slave queue ID: 0

Slave Interface: eth5
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 0
 Permanent HW addr: 74:fe:48:09:3a:fa
 Slave queue ID: 0

*** plug eth4 back, wait few seconds ***

[root@sky-8101 ~]# 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: eth5
 MII Status: up
 MII Polling Interval (ms): 100
 Up Delay (ms): 0
 Down Delay (ms): 0

Slave Interface: eth4
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 1
 Permanent HW addr: 74:fe:48:09:3a:f9
 Slave queue ID: 0

Slave Interface: eth5
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 0
 Permanent HW addr: 74:fe:48:09:3a:fa
 Slave queue ID: 0

*** physical remove eth5 , wait few seconds ***

[root@sky-8101 ~]# 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: eth4
 MII Status: up
 MII Polling Interval (ms): 100
 Up Delay (ms): 0
 Down Delay (ms): 0

Slave Interface: eth4
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 1
 Permanent HW addr: 74:fe:48:09:3a:f9
 Slave queue ID: 0

Slave Interface: eth5
 MII Status: down
 Speed: Unknown
 Duplex: Unknown
 Link Failure Count: 1
 Permanent HW addr: 74:fe:48:09:3a:fa
 Slave queue ID: 0
 

*** Plug eth5 back, wait few seconds ***

[root@sky-8101 ~]# 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: eth4
 MII Status: up
 MII Polling Interval (ms): 100
 Up Delay (ms): 0
 Down Delay (ms): 0

Slave Interface: eth4
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 1
 Permanent HW addr: 74:fe:48:09:3a:f9
 Slave queue ID: 0

Slave Interface: eth5
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 1
 Permanent HW addr: 74:fe:48:09:3a:fa
 Slave queue ID: 0 
 

*** remove eth4, wait few seconds ***

[root@sky-8101 ~]# 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: eth5
 MII Status: up
 MII Polling Interval (ms): 100
 Up Delay (ms): 0
 Down Delay (ms): 0

Slave Interface: eth4
 MII Status: down
 Speed: Unknown
 Duplex: Unknown
 Link Failure Count: 2
 Permanent HW addr: 74:fe:48:09:3a:f9
 Slave queue ID: 0

Slave Interface: eth5
 MII Status: up
 Speed: 10000 Mbps
 Duplex: full
 Link Failure Count: 1
 Permanent HW addr: 74:fe:48:09:3a:fa
 Slave queue ID: 0