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Possible routing issue(?): Timeout - 57587 - 1 - 246 - 513 - 4 after 10000ms

See original GitHub issue

Hi there,

I’ve got a Zigbee network with the following components:

Z2M 1.10.0
CC2531 w/ the default 1.2 20190619 firmware
serveral SPZB0001
two innr SP120
various Xiaomi sensors
various Tradfri bulbs
one Tradfri repeater

Today, one SPZB0001 (0xE0F3) became unreachable. It still periodically sends data requests to what it considers its parent (a Tradfri bulb 0x63B), but never gets anything back. Requests addressed to the SPZB0001 end with a timeout such as:

zigbee2mqtt:error 2020-02-10 18:14:32: Publish 'set' 'current_heating_setpoint' to 'climate.thermostat_<redacted>' failed: 'Error: Write 0x00158d0001ffb027/1 hvacThermostat({"16387":{"value":1850,"type":41}}, {"timeout":10000,"defaultResponseTimeout":15000,"manufacturerCode":4151,"disableDefaultResponse":true}) failed (Error: Timeout - 57587 - 1 - 246 - 513 - 4 after 10000ms)'
zigbee2mqtt:debug 2020-02-10 18:14:32: Error: Write 0x00158d0001ffb027/1 hvacThermostat({"16387":{"value":1850,"type":41}}, {"timeout":10000,"defaultResponseTimeout":15000,"manufacturerCode":4151,"disableDefaultResponse":true}) failed (Error: Timeout - 57587 - 1 - 246 - 513 - 4 after 10000ms)
    at Endpoint.<anonymous> (/app/node_modules/zigbee-herdsman/dist/controller/model/endpoint.js:150:23)
    at Generator.throw (<anonymous>)
    at rejected (/app/node_modules/zigbee-herdsman/dist/controller/model/endpoint.js:6:65)

Using a Zigbee sniffer I found out that the reasons seems to be that the coordinator sends the requests to 0xad22, the Tradfri repeater, which previously used to be the parent of the SPZB0001:

So, the request ends up on 0xad22, but the SPZB0001 0xE0F3 tries to retrieve it from 0x63B:

Any ideas?

Edit: Apologies if I picked the wrong project - not sure if this is zigbee-herdsman, zigbee2mqtt or firmware

Edit^2: In the network map I can see that 0x63B is considered the parent of the SPZB0001. 0x63B does not have a direct link to the coordinator, so attempting to reach it via a router would make sense. I am not that familiar with Zigbee yet, so I am uncertain whether the route should manifest in the Wireshark dump or whether I should observer any communication between the Tradfri repeater and the bulb regarding the SPZB0001.