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 level

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