Hi, On Tue, Aug 19, 2014 at 05:27:43PM +0100, João Pedro Taveira wrote: > On Tue, Aug 19, 2014 at 4:23 PM, Alexander Aring <alex.aring@xxxxxxxxx> wrote: > > > > I thought RPL needs the LQI value. For the LQI value I (we) thought about > > to handle the LQI value like the wireless signal strength. > RPL doesn't need LQI.It depends on RPL configurations and parameters, > which metrics it will use. One could setup RPL to use metrics based on > ETX, LQI, battery voltage, mains, temperature, ... sky is the limit. ok, we currently doesn't offer any of these information. > > > > If you have a wireless card, simple type: > > > > "iw dev $WLAN_DEV scan dump" (maybe you need to run a scan first). You will > > see all access points and their signal strength etc. > > > > We should have something similar for all neighbor nodes and LQI values, > > tx failures and similar information. > > > >> What's your opinion? > >> > > > > I think we should get a working mac layer with a working 6LoWPAN layer > > at first, then we can do effort to implement RPL or RFC6775. > RPL works on IPv6 layer, it doesn't depend on 6lowpan. I already > started to implement several RFCs but not MHROF. Right now, I can > connect linux and contiki sensors using rpl_of_of0, but this is the > basic. To get mhrof working with default configurations as defined on > RFCs, ETX should be available. My problem is that RPL works on IPv6 > layer, but ETX it's only available on link layer. Some abstraction > should be available to allow implementation of RPL metrics and RPL > Objective functions to make use of any metrics on existing link > protocols. > Okay, then this is a general question to your implementation. Maybe you ask this on netdev and not related to 802.15.4/802.15.4 6LoWPAN. It's more a IPv6 question. We don't support to offer these information in any case. Maybe you want to try to implement/test your RPL implementation for 802.11, there you have more change to access information like this. Maybe in future we offer these information in mac802154. - Alex -- 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
