This post was last edited by StarOfWest at 2018-05-31 02:10.
try to increase the priority - critical is the highest.
<Huawei> system-view
[Huawei] interface ethernet 0/0/6
[Huawei-Ethernet0/0/6] poe priority critical
Warning: This operation may power off some PD with lower priority.Continue?[Y/N]:y
Try to disable or enable poe legacy. Currently I see it's enabled on the port, so 802.3af or 802.3at standards compatibility is enabled. try to disable it and test again.
<Huawei> system-view
[Huawei] interface ethernet 0/0/6
[Huawei-Ethernet0/0/6] undo poe legacy enable
Try to test with another Huawei device, maybe a POE LAN switch like S5700, if it's working, you can compare the configuration on both sides and see the differences.
Anyway I recommend to get in touch with TAC, this is more like their type of case, maybe they meet this kind of situation before with Cambium and EnGenius devices.
http://e.huawei.com/en/service-hotline-queryCheers!