multicast in xdot

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  • November 17, 2017 at 5:03 am #21790
    alejandro ballesta
    Participant

    Hi all,

    I am bit confused with the Multicasting topic.

    I have read LoraWan spec 1.0 and multicasting is a possibility. Also read the xdot guide and says it is compatible with 1.0.
    Is this feature really available on the XDOT? I haven’t seen any AT commands in this direction.
    Also I have read this in the forum (by Jason Reyss)

    “A multicast message would require a shared session between end-points.

    An ABP device could be registered in the network server and used as a mulitcast address. The net address and session keys would then need to be shared with each device. The end-device would need the ability to accept alternate addresses and authenticate with session keys.”

    This makes sense. Nodes must be class C and have preshared keys for multicasting. Also this nodes must listen to other addresses besides its own (unicast address).
    Is this behaviour possible on XDOT?

    Thanks

    November 17, 2017 at 6:36 am #21791
    Jason Reiss
    Keymaster

    The xdot dev libraries have support for multicast sessions. 3 addresses and keys can be registered for downlink.

    Event handlers can be set to receive packets for normal and multicast packet with DevAddr.

    A method to exchange keys can happen at the application layer.

    A protocol for exchanging keys is being developed.

    December 5, 2017 at 9:04 am #22008
    alejandro ballesta
    Participant

    Hi Jason,

    thanks for your reply.
    I assume you’re telling me that no AT command support for multicasting is available at this time, right?

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