1# 2# 802.1d Ethernet Bridging 3# 4 5config BRIDGE 6 tristate "802.1d Ethernet Bridging" 7 select LLC 8 select STP 9 ---help--- 10 If you say Y here, then your Linux box will be able to act as an 11 Ethernet bridge, which means that the different Ethernet segments it 12 is connected to will appear as one Ethernet to the participants. 13 Several such bridges can work together to create even larger 14 networks of Ethernets using the IEEE 802.1 spanning tree algorithm. 15 As this is a standard, Linux bridges will cooperate properly with 16 other third party bridge products. 17 18 In order to use the Ethernet bridge, you'll need the bridge 19 configuration tools; see <file:Documentation/networking/bridge.txt> 20 for location. Please read the Bridge mini-HOWTO for more 21 information. 22 23 If you enable iptables support along with the bridge support then you 24 turn your bridge into a bridging IP firewall. 25 iptables will then see the IP packets being bridged, so you need to 26 take this into account when setting up your firewall rules. 27 Enabling arptables support when bridging will let arptables see 28 bridged ARP traffic in the arptables FORWARD chain. 29 30 To compile this code as a module, choose M here: the module 31 will be called bridge. 32 33 If unsure, say N. 34 35config BRIDGE_IGMP_SNOOPING 36 bool "IGMP snooping" 37 depends on BRIDGE 38 depends on INET 39 default y 40 ---help--- 41 If you say Y here, then the Ethernet bridge will be able selectively 42 forward multicast traffic based on IGMP traffic received from each 43 port. 44 45 Say N to exclude this support and reduce the binary size. 46 47 If unsure, say Y. 48