Z-Stack Rejoining Procedure

Todor Dimitrov

Other Parts Discussed in Thread: Z-STACK

Hallo,

according to the Z-Stack developer's guide the rejoining procedure is performed automatically. Is there a possibility to setup the security options during rejoining. We have the requirement, that all rejoin requests should be secured.

Reading through the ZigBee specification it seems that a secured rejoin can be achieved by NLME-JOIN.request primitive (s. 3.2.2.11 NLME-JOIN.request, 3.6.1.4.2 Joining or Rejoining a Network Using NWK Rejoin), which allows for the specification of the SecurityEnable option. The Z-Stack APIs for joining and rejoining, however, do not have such an option. Is setting SECURE=1 in f8wConfig.cfg sufficient in order to achieve the desired secure rejoin-behaviour?

Best Regards,

Todor Dimitrov

over 11 years ago

0 YiKai Chen over 11 years ago

Guru 735695 points

If you set SECURE=1 in f8wConfig.cfg, the rejoin will be secure.

0 Todor Dimitrov over 11 years ago in reply to YiKai Chen

Prodigy 120 points

Hi, how can I verify the secure rejoin behaviour? Using a protocol analyser I was able to capture a single rejoin frame, which had an encrypted payload. However, I'm not able to reproduce this any longer. When the device is restarted the following frames can be observed:

Orphan notification (MAC, unencrypted)
Coordinator realignment (MAC, unencrypted)
Device announce (NWK/ZDP, encrypted)

After these frames (and some acknowledgements) the device works properly on the network. When are rejoin-frames sent/needed? I couldn't find an answer in the specification.

Regards,
Todor Dimitrov

0 YiKai Chen over 11 years ago in reply to Todor Dimitrov

Guru 735695 points

You can refer to 3.4.6 Rejoin Request Command in Zigbee spec.

0 Todor Dimitrov over 11 years ago in reply to YiKai Chen

Prodigy 120 points

Thanks for the help!

0 YiKai Chen over 11 years ago in reply to Todor Dimitrov

Guru 735695 points

You are welcome.

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Z-Stack Rejoining Procedure