Zigbee router generates ZB_NWK_SIGNAL_NO_ACTIVE_LINKS_LEFT signal all the time

Hello everyone,

I'm encountering an issue with my Zigbee network that I hope someone can assist me with. Despite my efforts, I haven't been able to find a resolution.

I'm using two nrf52840 DK boards, one serving as the coordinator and the other as a router. Initially, the router successfully joins the network, but I consistently receive the ZB_NWK_SIGNAL_NO_ACTIVE_LINKS_LEFT signal thereafter. Strangely, the state signal appears to be normal. I've attached a Wireshark log along with logs from both the router and coordinator for further reference.

Any insights or assistance on resolving this would be greatly appreciated.

Thank you,

Julen

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*** Booting nRF Connect SDK v2.5.1 ***
[00:00:00.012,420] <err> main: RESET
[00:00:00.012,451] <dbg> main: get_reset_reason: Reset cause is: RESET_PIN
[00:00:00.012,481] <inf> nvram_app: Page info: size 4096, start offset 1024000
[00:00:00.012,542] <dbg> fs_nvs: nvs_recover_last_ate: Recovering last ate from sector 0
[00:00:00.020,568] <inf> fs_nvs: 3 Sectors of 4096 bytes
[00:00:00.020,599] <inf> fs_nvs: alloc wra: 0, fc8
[00:00:00.020,599] <inf> fs_nvs: data wra: 0, 2c
[00:00:00.020,629] <inf> nvram_app: NVRAM initialized
[00:00:00.020,690] <inf> zb_conf: NVRAM first id is correct
[00:00:00.020,751] <dbg> zb_conf: zb_conf_read_from_nvram: Extended PAN ID:
88 88 00 00 00 00 00 00 |........
[00:00:00.020,751] <wrn> zb_conf: Reading Node Identifier from NVRAM
[00:00:00.020,812] <wrn> zb_conf: Node Identifier:
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
ZB_NWK_SIGNAL_NO_ACTIVE_LINKS_LEFT_LOG.pcapng
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W: JULEN ZB_ZDO_SIGNAL_DEVICE_AUTHORIZED
I: Device authorization event received (short: 0xd239, long: f4ce361fccb346a2, authorization type: 0, authorization status: 0)
I: Unimplemented signal (signal: 54, status: 0)
I: Network steering finished
I: nRF5 802154 radio initialized
*** Booting nRF Connect SDK v2.5.1 ***
I: Starting ZBOSS Coordinator example
I: ZBOSS Coordinator example started
W: JULEN ZB_ZDO_SIGNAL_PRODUCTION_CONFIG_READY
I: Production configuration is not present or invalid (status: -1)
W: JULEN ZB_ZDO_SIGNAL_SKIP_STARTUP
I: Zigbee stack initialized
I: Device started for the first time
I: Start network formation
I: Unimplemented signal (signal: 54, status: 0)
W: JULEN ZB_BDB_SIGNAL_FORMATION
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX