Zigbee reconnection speed for multi-channel is slow

[Dunliang]

Hi，

I am using nRF54L15-DK for Zigbee light_stwitch startup testing. After successfully connecting the development board to the Hub for the first time, I evaluated the time from booting up to reconnecting to the Hub by clicking the RESET button.

After adding the following configuration, the time delay from each boot to successful Zigbee reconnection is about 5 seconds (default configuration is about 1 second):

CONFIG_ZIGBEE_CHANNEL_SELECTION_MODE_MULTI=y
CONFIG_ZIGBEE_CHANNEL_MASK=0x3FE0000

Best Regards
Dwenliang Weng

[Kazi Afroza Sultana]

Hello,

Can you provide device logs and sniffer logs?

[Dunliang]

Fullscreen 4645.device_log.txt Download

[2025-05-29 09:34:48.539]
RX：I: nRF5 802154 radio initialized
*** Booting nRF Connect SDK v2.8.0-a2386bfc8401 ***
*** Using Zephyr OS v3.7.99-0bc3393fb112 ***
I: Starting ZBOSS Light Switch example
I: ZBOSS Light Switch example started
I: Production configuration is not present or invalid (status: -1)
I: Zigbee stack initialized

[2025-05-29 09:34:53.371]
RX：I: Unimplemented signal (signal: 56, status: 0)
I: Joined network successfully on reboot signal (Extended PAN ID: 35f8be00b1eb94cc, PAN ID: 0xa88a)

You can see from the device logs that the rejoin process takes a few seconds to wait.

I don't have a sniffing tool, so I can't provide sniffing logs.