Lines Matching +full:bridge +full:- +full:enable

1 .\"	$NetBSD: bridge.4,v 1.5 2004/01/31 20:14:11 jdc Exp $
41 .Nd network bridge device
46 .Bd -ragged -offset indent
53 .Bd -literal -offset indent
64 For example, it is possible to bridge Ethernet and 802.11 networks together,
65 but it is not possible to bridge Ethernet and Token Ring together.
96 .Va net.link.bridge.inherit_mac
97 has a non-zero value, the newly created bridge will inherit the MAC
98 address from its first member instead of choosing a random link-level
100 This will provide more predictable bridge MAC addresses without any
109 A bridge can be used to provide several services, such as a simple
110 802.11-to-Ethernet bridge for wireless hosts, or traffic isolation.
112 A bridge works like a switch, forwarding traffic from one interface
115 interfaces that are part of the bridge.
116 For unicast traffic, the bridge learns which MAC addresses are associated
119 By default the bridge logs MAC address port flapping to
124 .Va net.link.bridge.log_mac_flap
136 The MTU of the first member interface to be added is used as the bridge MTU.
138 If the MTU of a bridge is changed after its creation, the MTU of all member
142 bridge are disabled if any of the interfaces do not support/enable them.
144 All the capabilities are restored when the interface is removed from the bridge.
145 Changing capabilities at run-time may cause NIC reinit and a link flap.
147 The bridge supports
161 address family on bridge interfaces.
164 variable configures an IPv6 link-local address on
167 .Bd -literal -offset indent
172 .Bd -literal -offset indent
182 This means each member interface still has a separate link-local scope
186 aggregated link-local scope zone at the same time.
200 checks whether a link-local scoped IPv6 address is configured on
213 .Va net.link.bridge.allow_llz_overlap
242 A bridge can be forced to operate in STP mode without rapid state transitions
248 The bridge can log STP port changes to
251 .Va net.link.bridge.log_stp
259 inbound on the originating interface, on the bridge interface and outbound on
264 .Bl -tag -width ".Va net.link.bridge.pfil_onlyip"
265 .It Va net.link.bridge.pfil_onlyip
266 Controls the handling of non-IP packets which are not passed to
272 to unconditionally pass all non-IP Ethernet frames.
273 .It Va net.link.bridge.pfil_member
276 to enable filtering on the incoming and outgoing member interfaces, set
280 .It Va net.link.bridge.pfil_bridge
283 to enable filtering on the bridge interface, set
287 .It Va net.link.bridge.pfil_local_phys
294 .It Va net.link.bridge.ipfw
297 to enable layer2 filtering with
312 is not run twice; these can be re-enabled if desired.
313 .It Va net.link.bridge.ipfw_arp
316 to enable layer2 ARP filtering with
331 .Cm mac-type
342 There are situations when some of the bridge members are sharing
354 from the list of bridge members with the same MAC address and the
365 .Bl -bullet
377 there are possibly other bridge members with the same MAC address
380 the bridge has more than one interface that are sharing the
395 no matter if there are any other bridge members carrying the same
408 This problem arises for any bridge members that are sharing the same
415 that are doing IP-forwarding; in some of such cases it is better
418 interface and not to the bridge members.
420 .Va net.link.bridge.pfil_local_phys
424 applications may open a bridge interface in emulated mode.
432 application transmits a packet to the host stack via the bridge interface,
448 will cause a bridge called
454 to the bridge, and then enable packet forwarding.
456 802.11-to-Ethernet bridge (assuming the 802.11 interface is
457 in ad-hoc mode).
458 .Bd -literal -offset indent
463 For the bridge to forward packets,
464 all member interfaces and the bridge need to be up.
466 .Bd -literal -offset indent
472 Consider a system with two 4-port Ethernet boards.
473 The following will cause a bridge consisting of all 8 ports with Rapid Spanning
475 .Bd -literal -offset indent
489 The bridge can be used as a regular host interface at the same time as bridging
491 In this example, the bridge connects em0 and em1, and will receive its IP
493 .Bd -literal -offset indent
500 The bridge can tunnel Ethernet across an IP internet using the EtherIP
508 tunnel, these are reversed on the remote bridge.
509 .Bd -literal -offset indent
528 .An -nosplit
530 .Nm bridge
546 driver currently supports only Ethernet and Ethernet-like (e.g., 802.11)
547 network devices, which can be configured with the same MTU size as the bridge