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Rejoining the network for router devices.

Ethan Huang
Prodigy 80 points
Other Parts Discussed in Thread: CC2530

using devices from TI's development kit. I am using cc2530 In my set up (not PRO config) there is one coordinator basically doing nothing, and other 7 router devices (doing some normal OTA message sending recieving via AF layer).  The PanID (0xFF20) and default chanel is speicified in the .cfg file

I did a test as follows:

a) the coordinator is first powered up,

b) followed by powering up the 7 routers,

c) after all the 7 routers joint the network (recieving a ZDO_NETWORK_UPDATE message, in the application layer), 

d) I power down all the 7 routers.

The problem is that then any of the 7 routers can not join the network anymore after they are powered up again. But an end device can stail join the network

If I do not power  down all the 7 routers in step d) (say leave one or two power on), then those routers can rejoin the network, with no problem (seem that way in my test).

If the total number of the routers in above tests are, say 3 instead of 7, there is no problem with the rejoining.

My question is that: is this behavior normal ? Is there a way to deal with it?

Thanks

Ethan

 

  • 0
    Prodigy 80 points

    Ok, I think I got the answer: The above case is just normal.

    Cause the coordinator in my test can only accept limited number of children and will not take more once reaching that limit. But when router is powerdown they are not leave the network so when they powered up, a new device then can not joint the network because the coordinator will not take more routers as children.

    Ethan