LP-CC2652R7: Zigbee: Limiting maximum number of nodes in ZC network.

Krishna Kumar V

Part Number: LP-CC2652R7

I would like to restrict the number of nodes in the ZC. How I can do it? Can it be done by defining "NWK_MAX_DEVICE_LIST".

For example, if I need to have support for maximum 10 nodes then defined NWK_MAX_DEVICE_LIST as 10 will limit maximum number of nodes in network?

Thanks.

over 3 years ago

0 YiKai Chen over 3 years ago

Guru 735685 points

NWK_MAX_DEVICE_LIST defines the size of association table. If there’s router joins to coordinator before association table is full, the maximum device might be more than NWK_MAX_DEVICE_LIST. However, it will only allow maximum NWK_MAX_DEVICE_LIST device to join if all devices connected to your coordinator are end devices.

0 Krishna Kumar V over 3 years ago in reply to YiKai Chen

Prodigy 140 points

I want to limit the max number nodes in the ZC, how I can do it?

What about definition "ZDSECMGR_TC_DEVICE_MAX"?

0 YiKai Chen over 3 years ago in reply to Krishna Kumar V

Guru 735685 points

Yes, set ZDSECMGR_TC_DEVICE_MAX as 10 could achieve this goal.

0 Krishna Kumar V over 3 years ago in reply to YiKai Chen

Prodigy 140 points

I tried the same. But I am able to join more than 10 Routers into the Zigbee network even if I define ZDSECMGR_TC_DEVICE_MAX as 10. I expected failure in joining 11 node.

0 Ryan Brown1 over 3 years ago in reply to Krishna Kumar V

TI__Guru**** 218207 points

Hi Krishna,

Limiting ZDSECMGR_TC_DEVICE_MAX will work only if Zigbee 3.0 devices are joining, however it will not apply for Zigbee HA 1.2 nodes or other legacy specifications which join. You could set BDB_DEFAULT_TC_REQUIRE_KEY_EXCHANGE to TRUE but this restrict these HA/legacy devices from joining the Zigbee network. Otherwise, your application will need to further control permit join behavior and device discovery actions based on Device Announce indications.

Regards,
Ryan

+1 Krishna Kumar V over 3 years ago in reply to Ryan Brown1

Prodigy 140 points

Ok understood. Thank you.

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LP-CC2652R7: Zigbee: Limiting maximum number of nodes in ZC network.