1.1.1. Create a new profile "static" with a specified IP address, network prefix, default gateway and DNS:
# nmcli con add con-name static ifname eth0 type ethernet ipv4.method manual ipv4.address 192.168.124.80/24 ipv4.gateway 192.168.124.1 ipv4.dns 192.168.124.1 Connection 'static' (626088a2-710b-425f-91ef-209cf78bcc40) successfully added.
1.1.2. Activate the new "static" connection:
# nmcli con up static Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/2)
1.1.3. Verify the new active connection:
# nmcli con show --active NAME UUID TYPE DEVICE static 626088a2-710b-425f-91ef-209cf78bcc40 ethernet eth0
1.1.4. Verify the IP address:
# ip addr show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 52:54:00:81:76:b3 brd ff:ff:ff:ff:ff:ff
inet 192.168.124.80/24 brd 192.168.124.255 scope global noprefixroute eth0
valid_lft forever preferred_lft forever
inet6 fe80::5444:48e4:604b:c5ca/64 scope link noprefixroute
valid_lft forever preferred_lft forever
1.1.5. Verify the default gateway:
# ip route default via 192.168.124.1 dev eth0 proto static metric 100 192.168.124.0/24 dev eth0 proto kernel scope link src 192.168.124.80 metric 100
1.1.6. Ping the DNS address:
# ping -c 3 192.168.124.1 PING 192.168.124.1 (192.168.124.1) 56(84) bytes of data. 64 bytes from 192.168.124.1: icmp_seq=1 ttl=64 time=0.179 ms 64 bytes from 192.168.124.1: icmp_seq=2 ttl=64 time=0.191 ms 64 bytes from 192.168.124.1: icmp_seq=3 ttl=64 time=0.178 ms --- 192.168.124.1 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2000ms rtt min/avg/max/mdev = 0.178/0.182/0.191/0.016 ms
1.2.1. Edit the network interface file to configure a static IP address:
# vi /etc/sysconfig/network-scripts/ifcfg-eth0 => TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=none IPADDR=192.168.124.80 NETMASK=255.255.255.0 GATEWAY=192.168.124.1 DNS1=192.168.124.1 DEFROUTE=yes IPV4_FAILURE_FATAL=no NAME=eth0 UUID=df7d88b6-a563-47bd-9805-a2824631610a DEVICE=eth0 ONBOOT=yes
1.2.2. Reactivate the network interface:
# ifdown eth0; ifup eth0
or restart the network sertvice:
# systemctl restart network
1.2.3. Verify the IP address:
# ip addr show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 52:54:00:81:76:b3 brd ff:ff:ff:ff:ff:ff
inet 192.168.124.80/24 brd 192.168.124.255 scope global eth0
valid_lft forever preferred_lft forever
inet6 fe80::5054:ff:fe81:76b3/64 scope link
valid_lft forever preferred_lft forever
1.2.4. Verify the default gateway:
# ip route default via 192.168.124.1 dev eth0 proto static metric 100 192.168.124.0/24 dev eth0 proto kernel scope link src 192.168.124.80 metric 100
1.2.5. Ping the DNS address:
# ping -c 3 192.168.124.1 PING 192.168.124.1 (192.168.124.1) 56(84) bytes of data. 64 bytes from 192.168.124.1: icmp_seq=1 ttl=64 time=0.187 ms 64 bytes from 192.168.124.1: icmp_seq=2 ttl=64 time=0.170 ms 64 bytes from 192.168.124.1: icmp_seq=3 ttl=64 time=0.168 ms --- 192.168.124.1 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 1999ms rtt min/avg/max/mdev = 0.168/0.175/0.187/0.008 ms
2.1.1. Add a static route to the "static" connection:
# nmcli con mod static +ipv4.routes "192.168.124.0/24 192.168.15.1"
2.1.2. Restart the network connection:
# nmcli con down static Connection 'static' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/2) # nmcli con up static Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/3)
2.1.3. Verify that the route is active:
# ip route default via 192.168.124.1 dev eth0 proto static metric 100 192.168.15.1 dev eth0 proto static scope link metric 100 192.168.124.0/24 dev eth0 proto kernel scope link src 192.168.124.80 metric 100 192.168.124.0/24 via 192.168.15.1 dev eth0 proto static metric 100
2.2.1. Edit the network interface file to add a static route:
# vi /etc/sysconfig/network-scripts/route-eth0 => 192.168.124.0/24 via 192.168.15.1 dev eth0
2.2.2. Reactivate the network interface:
# ifdown eth0; ifup eth0
or restart the network sertvice:
# systemctl restart network
2.2.3. Verify that the route is active:
# ip route default via 192.168.124.1 dev eth0 proto static metric 100 192.168.15.1 dev eth0 proto static scope link metric 100 192.168.124.0/24 dev eth0 proto kernel scope link src 192.168.124.80 metric 100 192.168.124.0/24 via 192.168.15.1 dev eth0 proto static metric 100
3.1. Create a bond interface with the "active-backup" mode:
# nmcli con add type bond con-name bond0 ifname bond0 bond.options "mode=active-backup" Connection 'bond0' (004a73e8-a8ed-4720-be7e-b778a979d23c) successfully added.
3.2. Display the network interfaces:
# nmcli dev DEVICE TYPE STATE CONNECTION ens4f0np0 ethernet disconnected -- ens5f0np0 ethernet disconnected -- lo loopback unmanaged --
3.3. Assign the network interfaces to the bond:
# nmcli con add type ethernet slave-type bond con-name bond0-port1 ifname ens4f0np0 master bond0 Connection 'bond0-port1' (93fc8898-fda8-4772-abec-6db347c21c9f) successfully added. # nmcli con add type ethernet slave-type bond con-name bond0-port2 ifname ens5f0np0 master bond0 Connection 'bond0-port2' (0e44212c-5797-49e6-82ba-98b568100bc8) successfully added.
3.4. Configure the static IPv4 address, network mask, default gateway and DNS server:
# nmcli con mod bond0 ipv4.addresses 192.168.15.105/24 ipv4.gateway 192.168.15.1 ipv4.dns 192.168.15.1 ipv4.method manual
3.5. Activate the connection:
# nmcli con up bond0 Connection successfully activated (master waiting for slaves) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/16)
3.6. Verify that the ports are connected:
# nmcli dev DEVICE TYPE STATE CONNECTION bond0 bond connected bond0 ens4f0np0 ethernet connected bond0-port1 ens5f0np0 ethernet connected bond0-port2 lo loopback unmanaged --
3.7. Display the connections:
# nmcli con NAME UUID TYPE DEVICE bond0 004a73e8-a8ed-4720-be7e-b778a979d23c bond bond0 bond0-port1 93fc8898-fda8-4772-abec-6db347c21c9f ethernet ens4f0np0 bond0-port2 0e44212c-5797-49e6-82ba-98b568100bc8 ethernet ens5f0np0
3.8. Enable all ports automatically when the bond is connected:
# nmcli con mod bond0 connection.autoconnect-slaves 1
3.9. Display the status of the bond:
# 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: ens4f0np0 MII Staus: up MII Polling Interval (ms): 100 Up Delay (ms): 0 Down Delay (ms): 0 Peer Notification Delay (ms): 0 Slave Interface: ens4f0np0 MII Staus: up Speed: 10000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 84:16:0c:11:33:f8 Slave queue ID: 0 Slave Interface: ens5f0np0 MII Staus: up Speed: 10000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 84:16:0c:11:33:f9 Slave queue ID: 0