Zyxel GS1900-8HP v2 - Activating PoE?

[dhoe]

Dear all,

I'm a fresh new owner of the Zyxel GS1900-8HP v2 PoE switch. Did anyone have an idea, how to get PoE working? There are 3 PoE devices on Lan6/7/8 connected - but they didn't get any power:

 root@OpenWrt:~# ubus call poe info
 {
 	"firmware": "v0.0",
 	"budget": 70.000000,
 	"consumption": 0.000000,
 	"ports": {
 		
 	}
 }

 root@OpenWrt:~# cat /etc/config/poe 
 config global
 	option budget	'70'

 root@OpenWrt:~# ubus call poe manage '{ "port" : "lan8", "enable" : true }'
 Command failed: Invalid argument

Current Kernel - updatet as a result of testing (but didn't work also):
OpenWrt 24.10.4 r28959-29397011cc / LuCI openwrt-24.10 branch 25.292.66247~75e41cb

dmesg - pastebin

Kind regards
David

[brada4]

Please use the "Preformatted text </>" button for logs, scripts, configs and general console output.

Please edit your post accordingly. Thank you!

[dhoe]

Found the solution in another thread:

To enable support for the PoE controller in the v2 model, you need to add the following two lines to the global options block of /etc/config/poe:
option force_baudrate '115200'
option force_dialect 'realtek'

root@OpenWrt:~# ubus call poe info
{
	"firmware": "v16.0",
	"budget": 70.000000,
	"consumption": 30.000000,
	"ports": {
		"lan8": {
			"priority": 2,
			"mode": "PoE+",
			"status": "Delivering power",
			"consumption": 3.400000
		}
	}
}

Is there a way to add this information to the open wrt wiki entry for this switch?

[dekarl]

@dhoe

Is there a way to add this information to the open wrt wiki entry for this switch?

I think you can login with your Github account and add it. Like here https://openwrt.org/toh/zyxel/gs1900-8hp_v1#power_over_ethernet

there is also an open issue, hinting that autodetection is still on the wishlist

New realtek dialect is not autodetected

[dhoe]

I've added the two lines to the wiki. thank you for your reply. Hope it helps

[bmork]

Great. But I believe it would be even better if this went into the

utils/realtek-poe/files/etc/uci-defaults/30-poe

script, along with the appropriate settings or flags or whatever for the affected devices in realtek_setup_poe() in the target/linux/realtek/base-files/etc/board.d/02_network script

That way we could have correct defaults automatically, and users wouldn’t have to worry about making this change manually