2015-07-27 12:38 GMT+02:00 Alexander Aring <alex.aring@xxxxxxxxx>: > On Mon, Jul 27, 2015 at 12:31:28PM +0200, Baptiste Clenet wrote: >> 2015-07-27 12:21 GMT+02:00 Alexander Aring <alex.aring@xxxxxxxxx>: >> > On Mon, Jul 27, 2015 at 12:08:18PM +0200, Baptiste Clenet wrote: >> > ... >> >> >> >> Receiving side: >> >> [ 176.921637] CID flag is set, increase header with one >> >> [ 176.931640] NH flag is set, next header carried inline: 02 >> >> [ 176.942502] SAC bit is set. Handle context based source address. >> >> [ 176.954397] >> >> [ 176.957352] ieee802154 phy0 wpan0: SAM value 0x3 not supported >> >> >> > >> > Yes this is not what it was transmitted before from the other node. >> > That's why I would ask for some sniffing device, somewhere in the lower >> > layers mac or phy it will fill your frame with garbage. >> > >> > I can't tell you now if it's the transmitted node or the receiving node. >> > You need to debug it there. >> Yeah, I agree. >> >> > >> > To ensure the transmitted node don't send garbage I would like to check >> > it with some sniffer device. If you see garbage on the sniffer device >> > then it's something wrong with the transmitting. >> Ok, but I did sniffing with monitor0 on the receiver as I mentioned earlier. >> How may I sniff a packet ont the sender? Because I can't set up >> lowpan0 on top of monitor0. >> How may I sniff on lower layers? >> > > In short: > > Monitor is just for sniffing, we don't parse any payload data on it. You > can't create a lowpan interface on it, please use the L2 interface > (wpan0). See [0], you maybe need a third node which running as monitor. I don't think I've got it, you want me to set up a network of 3 nodes with: 1 2 3 sender receiver receiver wpan0 wpan0 monitor0 But I will see exactly the same things as earlier. And I won't sniff phy layer. > >> Also, I would add that even if I change the destination IP, I still >> receive the message. Shouldn't the transceiver blocks messages which >> are not addressed to it? >> > > for L2 (ieee802154) addresses yes, for L3 (IPv6) no. ok > > - Alex > > [0] http://wpan.cakelab.org/#_sniffing -- Baptiste -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
