Hi all, I need some 'tc ... action ... mirred' doc/man. On "http://lartc.org/howto/lartc.intro.linux.html"; (Linux Advanced Routing & Traffic Control), it said 'Traffic control is almost undocumented.'
What I want to do: My network is /A\ B D \C/ All of the nodes(A, B, C, D) have two wireless cards (wlan0, wlan1). A-B, B-C, A-D, D-C are wireless links. Node A wnats to transmit packets with node C. Because the wireless links are not very reliable, I want to forward the same packet through A-B-C and A-D-C simultaneously. How to achieve my purpose？ Someone said, >Not sure what the best solution would be, but you could investigate >using the 'tc filter mirred' action. Essentially, the traffic control >command allows putting filters on output (or input) that can be used >to do things like mirror packets. > On node A, wlan0, IP address 192.168.1.1/24 ; wlan1, IP address 192.168.2.1/24 I use command 'tc filter add dev wlan0 ... match ip src 192.168.1.0/24 ... action mirred egress mirror dev wlan1' to mirror packets. When I use 'tcpdump -i wlan1', I can 'see' the packets 'A(wlan0)->B' (node B will forward them to C). How to forward the mirroring packets 'A(wlan1)' to D (then, node D forwards them to C) ? Regards, Wu
