CONFIG_BRIDGE: 802.1d Ethernet Bridging

General informations

The Linux kernel configuration item CONFIG_BRIDGE has multiple definitions:

802.1d Ethernet Bridging found in net/bridge/Kconfig

The configuration item CONFIG_BRIDGE:

• prompt: 802.1d Ethernet Bridging
• type: tristate
• depends on: CONFIG_IPV6 || CONFIG_IPV6 = CONFIG_n
• defined in net/bridge/Kconfig
• found in Linux kernels: 2.6.13–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12
• modules built: bridge, bridge

Help text

If you say Y here, then your Linux box will be able to act as an Ethernet bridge, which means that the different Ethernet segments it is connected to will appear as one Ethernet to the participants. Several such bridges can work together to create even larger networks of Ethernets using the IEEE 802.1 spanning tree algorithm. As this is a standard, Linux bridges will cooperate properly with other third party bridge products.

In order to use the Ethernet bridge, you'll need the bridge configuration tools; see Documentation/networking/bridge.rst for location. Please read the Bridge mini-HOWTO for more information.

If you enable iptables support along with the bridge support then you turn your bridge into a bridging IP firewall. iptables will then see the IP packets being bridged, so you need to take this into account when setting up your firewall rules. Enabling arptables support when bridging will let arptables see bridged ARP traffic in the arptables FORWARD chain.

To compile this code as a module, choose M here: the module will be called bridge.

If unsure, say N.

802.1d Ethernet Bridging found in net/Kconfig

The configuration item CONFIG_BRIDGE:

• prompt: 802.1d Ethernet Bridging
• type: tristate
• depends on: (none)
• defined in net/Kconfig
• found in Linux kernels: 2.5.45–2.5.75, 2.6.0–2.6.12
• modules built: bridge, bridge

Help text

If you say Y here, then your Linux box will be able to act as an Ethernet bridge, which means that the different Ethernet segments it is connected to will appear as one Ethernet to the participants. Several such bridges can work together to create even larger networks of Ethernets using the IEEE 802.1 spanning tree algorithm. As this is a standard, Linux bridges will cooperate properly with other third party bridge products.

In order to use the Ethernet bridge, you'll need the bridge configuration tools; see Documentation/networking/bridge.txt for location. Please read the Bridge mini-HOWTO for more information.

If you enable iptables support along with the bridge support then you turn your bridge into a bridging IP firewall. iptables will then see the IP packets being bridged, so you need to take this into account when setting up your firewall rules. Enabling arptables support when bridging will let arptables see bridged ARP traffic in the arptables FORWARD chain.

To compile this code as a module, choose M here: the module will be called bridge.

If unsure, say N.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module bridge CONFIG_BRIDGE : net/Kconfig : "802.1d Ethernet Bridging" # in 2.5.45–2.5.75, 2.6.0–2.6.12
• lkddb module bridge CONFIG_BRIDGE : net/bridge/Kconfig : "802.1d Ethernet Bridging" # in 2.6.13–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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