1 # SPDX-License-Identifier: GPL-2.0-only <<
2 # 1 #
3 # 802.1d Ethernet Bridging 2 # 802.1d Ethernet Bridging
4 # 3 #
5 4
6 config BRIDGE 5 config BRIDGE
7 tristate "802.1d Ethernet Bridging" 6 tristate "802.1d Ethernet Bridging"
8 select LLC 7 select LLC
9 select STP 8 select STP
10 depends on IPV6 || IPV6=n 9 depends on IPV6 || IPV6=n
11 help !! 10 ---help---
12 If you say Y here, then your Linux b 11 If you say Y here, then your Linux box will be able to act as an
13 Ethernet bridge, which means that th 12 Ethernet bridge, which means that the different Ethernet segments it
14 is connected to will appear as one E 13 is connected to will appear as one Ethernet to the participants.
15 Several such bridges can work togeth 14 Several such bridges can work together to create even larger
16 networks of Ethernets using the IEEE 15 networks of Ethernets using the IEEE 802.1 spanning tree algorithm.
17 As this is a standard, Linux bridges 16 As this is a standard, Linux bridges will cooperate properly with
18 other third party bridge products. 17 other third party bridge products.
19 18
20 In order to use the Ethernet bridge, 19 In order to use the Ethernet bridge, you'll need the bridge
21 configuration tools; see <file:Docum !! 20 configuration tools; see <file:Documentation/networking/bridge.txt>
22 for location. Please read the Bridge 21 for location. Please read the Bridge mini-HOWTO for more
23 information. 22 information.
24 23
25 If you enable iptables support along 24 If you enable iptables support along with the bridge support then you
26 turn your bridge into a bridging IP 25 turn your bridge into a bridging IP firewall.
27 iptables will then see the IP packet 26 iptables will then see the IP packets being bridged, so you need to
28 take this into account when setting 27 take this into account when setting up your firewall rules.
29 Enabling arptables support when brid 28 Enabling arptables support when bridging will let arptables see
30 bridged ARP traffic in the arptables 29 bridged ARP traffic in the arptables FORWARD chain.
31 30
32 To compile this code as a module, ch 31 To compile this code as a module, choose M here: the module
33 will be called bridge. 32 will be called bridge.
34 33
35 If unsure, say N. 34 If unsure, say N.
36 35
37 config BRIDGE_IGMP_SNOOPING 36 config BRIDGE_IGMP_SNOOPING
38 bool "IGMP/MLD snooping" 37 bool "IGMP/MLD snooping"
39 depends on BRIDGE 38 depends on BRIDGE
40 depends on INET 39 depends on INET
41 default y 40 default y
42 help !! 41 ---help---
43 If you say Y here, then the Ethernet 42 If you say Y here, then the Ethernet bridge will be able selectively
44 forward multicast traffic based on I 43 forward multicast traffic based on IGMP/MLD traffic received from
45 each port. 44 each port.
46 45
47 Say N to exclude this support and re 46 Say N to exclude this support and reduce the binary size.
48 47
49 If unsure, say Y. 48 If unsure, say Y.
50 49
51 config BRIDGE_VLAN_FILTERING 50 config BRIDGE_VLAN_FILTERING
52 bool "VLAN filtering" 51 bool "VLAN filtering"
53 depends on BRIDGE 52 depends on BRIDGE
54 depends on VLAN_8021Q 53 depends on VLAN_8021Q
55 default n 54 default n
56 help !! 55 ---help---
57 If you say Y here, then the Ethernet 56 If you say Y here, then the Ethernet bridge will be able selectively
58 receive and forward traffic based on 57 receive and forward traffic based on VLAN information in the packet
59 any VLAN information configured on t 58 any VLAN information configured on the bridge port or bridge device.
60 59
61 Say N to exclude this support and re 60 Say N to exclude this support and reduce the binary size.
62 61
63 If unsure, say Y. 62 If unsure, say Y.
64 <<
65 config BRIDGE_MRP <<
66 bool "MRP protocol" <<
67 depends on BRIDGE <<
68 default n <<
69 help <<
70 If you say Y here, then the Ethernet <<
71 protocol to detect loops <<
72 <<
73 Say N to exclude this support and re <<
74 <<
75 If unsure, say N. <<
76 <<
77 config BRIDGE_CFM <<
78 bool "CFM protocol" <<
79 depends on BRIDGE <<
80 help <<
81 If you say Y here, then the Ethernet <<
82 protocol according to 802.1Q section <<
83 <<
84 Say N to exclude this support and re <<
85 <<
86 If unsure, say N. <<
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