On Apr 6, 2005 5:58 PM, Russell Fulton <[EMAIL PROTECTED]> wrote:
> BTW I have also spent some time looking for docs that describe exact
> order of processing of packets but could not find anything useful.
#man bridge 4
The algorithm works as follows by default, but can be modified via
ioctl(2) or the utility brconfig(8). When a frame comes in, the origin
segment and the source address are recorded. If the bridge has no knowl-
edge about where the destination is to be found, the bridge will forward
the frame to all attached segments. If the destination is known to be on
a different segment from its origin, the bridge will forward the packet
only to the destination segment. If the destination is on the same seg-
ment as the origin segment, the bridge will drop the packet because the
receiver has already had a chance to see the frame. Before forwarding a
frame, the bridge will check to see if the packet contains an ip(4) or
ip6(4) datagram; if so, the datagram is run through the pf(4) interface
so that it can be filtered.
Hopefully that helps, it seems to describe exactly what you were asking.
--
Jon Simola
Systems Administrator
ABC Communications
