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Routing table and PAN ID.

arbi tel
Intellectual 320 points
Other Parts Discussed in Thread: CC2430, Z-STACK

Hello, I'm glad I found this forum and hope to fit in well.

I own a CC2430 Coordinator and Endpoints (Routers).

 I have a few questions please:

1. If two coordinators different PAN IDs, but working on the same channel, could this be a problem?

2. where is the routing table stored at each endpoint (router) and coordinator?

3. How do I enable Mesh topology in endpoints (routers) and coordinator?

4. When I start the endpoint in the network by calling ZDOInitDevice() (with restored network), can I afterwards (without restting the endpoint) call ZDOInitDevice again but change the start-up options to default network, or must i reset the Endpint first?

Thank you for any given help.

  • 0
    Expert 1075 points

    You can find more info in the ZigBee section of the Low Power RF Solutions workshop (see http://e2e.ti.com/forums/p/4610/16962.aspx#16962).

    It contains some ZigBee material (http://tiexpressdsp.com/images/8/8a/08_-_ZigBee_Stack.pdf) that helps you to understand the role of the different device types (e.g. pages 12 and 13 of 84).

    Let me try to give some answers:

    1) It is not a problem unless you have a latency/throughput critical application as both networks share the same channel; i.e. they cannot transmit at the same time if they are in RF range of each other (this is due to the CSMA-CA algorithm that IEEE 802.15.4 uses)

    2) The coordinator and the routers have each their own routing table. The end device has no routing table as all its communication goes through its parent.

    3) In Z-Stack mesh topology is enabled automatically; i.e. you do not have to enable it. However, end devices can always only communicate through its parent and not directly with other devices.

    4) I am not 100% sure but I think you will have to reset the device.

    -LL-

  • 0 in reply to LuckyLuke
    Intellectual 320 points

    Thank you very very much Luke! :)

    you helped me big time :)