Différences

Ci-dessous, les différences entre deux révisions de la page.

--- tech:linux_network_bridge [2025/03/30 21:32] – Jean-Baptiste
+++ tech:linux_network_bridge [2026/06/07 19:12] (Version actuelle) – modification externe 127.0.0.1
@@ Ligne 1: / Ligne 1: @@
+<!DOCTYPE markdown>
+{{tag>Network}}
+# Linux Network Bridge
+Voir :
+* https://www.linux-kvm.org/page/Networking
+* [[#MacVTap]]
+* https://linuxfr.org/forums/linux-general/posts/fonctionnalite-tun-tap
+Voir aussi :
+* ebtables
+## iproute2
+Voir :
+* https://wiki.archlinux.org/index.php/Network_bridge
+* https://baturin.org/docs/iproute2/
+Création
+~~~bash
+ip link add br0 type bridge
+ip link set br0 up
+ip link set enp0s8 up
+#ip addr flush enp0s8
+ip link set enp0s8 master br0
+~~~
+Affichage et configuration
+~~~bash
+bridge link
+bridge fdb show dev br0
+bridge vlan show
+ip addr add dev br0 192.168.56.11/24
+~~~
+Supression
+~~~bash
+ip addr flush br0
+ip link set enp0s8 nomaster
+#ip link set enp0s8 down
+ip link del br0 type bridge
+~~~
+## brctl (deprecated)
+brctl (deprecated). Use `ip link` instead
+~~~bash
+brctl show
+~~~
+## tunctl (deprecated).
+tunctl (deprecated). Use `ip tuntap` and `ip link` instead
+## SystemD
+Voir : https://wiki.archlinux.org/index.php/Systemd-networkd#Bridge_interface
+## nmcli
+~~~bash
+nmcli connection add type bridge autoconnect yes con-name br0 ifname br0
+nmcli con show
+nmcli -f bridge con show br0
+~~~
+Disable STP
+~~~bash
+sudo nmcli con modify br0 bridge.stp no
+~~~
+Afficher la conf
+~~~bash
+nmcli con show
+nmcli -f bridge con show br0
+~~~
+Pour ajouter, ou pour mettre une interface en esclavage
+~~~bash
+nmcli con add type bridge-slave ifname team0 master br0
+~~~
+ça va créer un fichier
+`/etc/sysconfig/network-scripts/ifcfg-br0`
+~~~ini
+STP=no
+TYPE=Bridge
+PROXY_METHOD=none
+BROWSER_ONLY=no
+BOOTPROTO=dhcp
+DEFROUTE=yes
+IPV4_FAILURE_FATAL=no
+IPV6INIT=yes
+IPV6_AUTOCONF=yes
+IPV6_DEFROUTE=yes
+IPV6_FAILURE_FATAL=no
+IPV6_ADDR_GEN_MODE=stable-privacy
+NAME=br0
+UUID=8ddf2382-7458-4f94-8986-40e95415ea20
+DEVICE=br0
+ONBOOT=yes
+~~~
+Un nouveau fichier est apparu
+`/etc/sysconfig/network-scripts/ifcfg-bridge-slave-team0`
+~~~ini
+TYPE=Ethernet
+NAME=bridge-slave-team0
+UUID=93645ead-7177-4794-88f3-0a43c95bf179
+DEVICE=team0
+ONBOOT=yes
+BRIDGE=br0
+~~~
+## RedHat
+~~~
+     Edit /etc/sysconfig/network-scripts/ifcfg-eth0
+        comment out BOOTPROTO
+        Add BRIDGE=br0
+    Create /etc/sysconfig/network-scripts/ifcfg-br0
+        The content should be:
+DEVICE=br0
+BOOTPROTO=dhcp
+ONBOOT=yes
+TYPE=Bridge
+~~~
+Source : https://www.linux-kvm.org/page/Networking
+## Debian
+~~~
+/etc/network/interfaces
+# Replace old eth0 config with br0
+auto eth0 br0
+# Use old eth0 config for br0, plus bridge stuff
+iface br0 inet dhcp
+    bridge_ports    eth0
+    bridge_stp      off
+    bridge_maxwait  0
+    bridge_fd       0
+~~~
+Source : https://www.linux-kvm.org/page/Networking
+## Macvlan
+Voir :
+* https://mghrepo.github.io/pse-mdbook/PSE_Res/virtualisation_reseau/macvlan.html
+## MacVTap
+Voir :
+* https://www.furorteutonicus.eu/2013/08/04/enabling-host-guest-networking-with-kvm-macvlan-and-macvtap/
+* https://virt.kernelnewbies.org/MacVTap
+* https://www.ibm.com/support/knowledgecenter/en/linuxonibm/liaag/wkvm/wkvm_c_net_macvtap.htm
+* https://www.ibm.com/support/knowledgecenter/linuxonibm/liaag/wehs/l0wehs00_kvmguestvirtnetconfusingmacvtap.htm
+* https://www.flat-planet.net/?p=479
+* https://www.fir3net.com/UNIX/Linux/what-is-macvtap.html
+* https://linuxnatives.net/2012/virtualized-bridged-networking-with-macvtap
+* https://suhu0426.github.io/Web/Presentation/20150120/index.html
+* https://blog.scottlowe.org/2016/02/09/using-kvm-libvirt-macvtap-interfaces/
+* http://www.math.cmu.edu/~gautam/sj/blog/20140303-kvm-macvtap.html
+* https://events.static.linuxfound.org/sites/events/files/slides/2016%20-%20Linux%20Networking%20explained_0.pdf