# Zigbee network node

**URL:** <https://community.homey.app/t/zigbee-network-node/95827>\
**Category:** Devices\
**Tags:** zigbee\
**Created:** [November 26, 2023, 9:43am UTC](https://community.homey.app/t/zigbee-network-node/95827 "2023-11-26T09:43:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ArnarS](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/arnars/32/33981_2.png) [@ArnarS](https://community.homey.app/u/ArnarS)\
**Post date:** [November 26, 2023, 9:43am UTC](https://community.homey.app/t/zigbee-network-node/95827/1 "2023-11-26T09:43:52Z")

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Hi.

Can anyone explain to me why some of my zigbee devices have question marks in the mesh map:

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/0/e/0e244c6fe21c72a6de06c479cb3343cc65e13658.png)

I am asking because my zigbee mesh is rather fragile and more often than not crashes after updates (app and homey). I am just looking for explanations for that and got curious about these question marks.

best regards,  
Arnar

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**Author:** ![ArnarS](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/arnars/32/33981_2.png) [@ArnarS](https://community.homey.app/u/ArnarS)\
**Post date:** [November 26, 2023, 9:45am UTC](https://community.homey.app/t/zigbee-network-node/95827/2 "2023-11-26T09:45:02Z")

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and forgot to mention that all of the devices work, even those with the question mark

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**Author:** ![Rmb](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rmb/32/79135_2.png) [@Rmb](https://community.homey.app/u/Rmb)\
**Post date:** [November 26, 2023, 10:02am UTC](https://community.homey.app/t/zigbee-network-node/95827/3 "2023-11-26T10:02:17Z")

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Because there is unknown node in the route. Use the Z-wave test command to ping the device to see it is reachable.

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**Author:** ![DirkG](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dirkg/32/118897_2.png) [@DirkG](https://community.homey.app/u/DirkG)\
**Post date:** [November 26, 2023, 12:45pm UTC](https://community.homey.app/t/zigbee-network-node/95827/4 "2023-11-26T12:45:40Z")

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> [@ArnarS](#):
>
> my **zigbee** devices

> [@Rmb](#):
>
> Use the **Z-wave** test command to ping the device **to see it is reachable**.

> [@ArnarS](#):
>
> and forgot to mention that **all of the devices work** , even those with the question mark

❓

* * *

@ArnarS, I don’t really know why some devices show questions marks. I also had this with some devices on my HP19, but they still worked perfectly. The issue has also been discussed several times in the forum, but I am not aware of a logical explanation. I recommend that you contact Athom support.