Unable to force specific network (pan ID, extended pan ID). (TZ-1269)

[Fienberber]

Question

Hellpo, I'm facing a behavior which was partially addressed in some issues. I try to make a Zigbee Gateway using the esp_zigbee_gateway example, and I need to force the the device on a specific zigbee network. I'd like to switch networks.

For this I use : esp_zb_set_extended_pan_id, esp_zb_set_pan_id which don't work each time. I also use esp_zb_set_primary_network_channel_set and I also set the network keys, which seem to work just fine.

I'm able to set the pan ID but not reliably. It work only once, after one forced network switch I have to restart the chip.

• Before setting the network parameter I leave the network using esp_zb_bdb_reset_via_local_action
• I'm waiting for the leave to take effect
• I set the network parameters
• and then using esp_zb_start to create the network.

I'm probably missing something. I feel like there is one thing I didn't understand otherwise it would work 100% of the time.

I tried to set the pan ID (extended and normal) between esp_zb_init and esp_zb_start during the startup sequence without success, this won't work at all. It would be nice if I can switch network during the normal operation of the device.

If you need more informations I'll share it. Thanks in advance for your help.

Additional context.

No response

[xieqinan]

@Fienberber ，

it would be nice if I can switch network during the normal operation of the device.

Zigbee does not support switching networks once the network has been formed. Therefore, esp_zb_set_extended_pan_id() and esp_zb_set_pan_id() only take effect when the device is in a factory-new state.

[Fienberber]

@xieqinan thank you for your quick reply.

It seem quite understandable that a factory-new state is required. That is what I'm doing but I unable to do it multiple time in a row.

is the use of esp_zb_bdb_reset_via_local_action to trigger a factory reset appropriate ? Do I need to do something else to keep the Zigbee stack in the same state ?

[xieqinan]

Hi @Fienberber ,

The stack only allows the application to set the PAN ID once during runtime. Could you please provide more details about the application background? There might be a better solution for your needs.

[Fienberber]

Hi @xieqinan,

I understand what I want to do isn't standard. I'd like to switch networks for production validation, we have a sequence of tests to do and wanted to use pre-defines network for each one of them. Depending on the step the gateway would move to a network. It would be very efficient for us if we don't have to power cycle the device. Currently I use a workaround which reboots and set the pan ID which work but is quite a slow process.

When you say we can only set the PAN ID once during runtime, If I completely restart the Zigbee stack it could work ? Or the ESP32 has to power cycle ?

Thanks for your support,

[xieqinan]

Hi,

When you say we can only set the PAN ID once during runtime, If I completely restart the Zigbee stack it could work ? Or the ESP32 has to power cycle ?

With the current SDK implementation, you may need to power cycle the device.

[Fienberber]

Thank you for your clarification,

This is what I was wondering. I can close the issue.