Advanced Network Management#
Network Management
Teaming and bonding#
Bridging#
Warning
Bridging support is known to be broken in many distributions. Be aware that your network configuration may be broken after using this feature.
$ yum install -y bridge-utils
$ nmcli con add type bridge con-name br0 ifname br0
$ nmcli con add type bridge-slave con-name br0-port1 ifname ens256 master br0
$ nmcli con add type bridge-slave con-name br0-port2 ifname ens161 master br0
$ nmcli con mod br0 ipv4.addresses 10.10.10.1/24
$ nmcli con mod br0 ipv4.method manual
$ nmcli con up br0
$ ip a
# brctl show
bridge name bridge id STP enabled interfaces
br0 8000.000c293ae68b yes ens161
ens256
Teamed Bridging#
# nmcli con add type team con-name team0 ifname team0 config '{"runner": {"name": "activebackup"}}'
# nmcli con add type team-slave con-name team0-ens256 ifname ens256 master team0
# nmcli con add type team-slave con-name team0-ens161 ifname ens161 master team0
# nmcli dev dis team0
# systemctl stop NetworkManager
# systemctl disable NetworkManager
# vi /etc/sysconfig/network-scripts/ifcfg-team0
BRIDGE=brteam0
Removing the team config
# cat /etc/sysconfig/network-scripts/ifcfg-team0-ens161
NAME=team0-ens161
UUID=9dced9f4-35b6-4edb-9aed-8c922ded7b52
DEVICE=ens161
ONBOOT=yes
TEAM_MASTER=team0
DEVICETYPE=TeamPort
Create Bridge config:
vi ifcfg-brteam0
# cat ifcfg-brteam0
DEVICE=brteam0
ONBOOT=yes
type=Bridge
IPADDR0=10.10.10.1
PREFIX=24
Routing#
$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.2.254 0.0.0.0 UG 600 0 0 wlp1s0
10.0.1.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr1
10.0.2.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr5
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
192.168.2.0 0.0.0.0 255.255.255.0 U 600 0 0 wlp1s0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0