topic Re: R710: "PoE+" injector still gets recognized as 802.3af power in To Be Moved

R710: "PoE+" injector still gets recognized as 802.3af power

john_d — Wed, 02 Dec 2015 17:03:56 GMT

For fun, I tried buying a PoE+ injector to unlock full transmit power on 2.4GHz on my R710. I found that even with an injector that's advertised to be PoE+, the power mode still says 802.3af, not 802.3at.

Looking at the support article KB-5005, it looks like it's implying that PoE+ negotiation requires a PoE+ switch that speaks LLDP. Is this true? Is there any way to get the AP into PoE+ mode via an injector?

https://support.ruckuswireless.com/answers/000005005

Re: R710: "PoE+" injector still gets recognized as 802.3af power

hayward_kong — Sat, 12 Dec 2015 18:29:51 GMT

isn't LLDP the function of the switch that you are hooking it up to while using the injector?

Re: R710: "PoE+" injector still gets recognized as 802.3af power

john_d — Sat, 12 Dec 2015 18:31:40 GMT

Yes and no -- LLDP in this context refers to the LLDP POE+ switch negotiation protocol. since my underlying switch isn't PoE, the switch isn't going to speak it. And my injector is too dumb to speak LLDP too.

Re: R710: "PoE+" injector still gets recognized as 802.3af power

hayward_kong — Sat, 12 Dec 2015 18:58:14 GMT

isn't LLDP the function of the switch that you are hooking it up? I went to switch route and looked for the cheapest POE+ with VLAN options. However, even with LLDP still doesn't seem to work... might have to get a better switch...

Re: R710: "PoE+" injector still gets recognized as 802.3af power

hayward_kong — Sat, 12 Dec 2015 19:00:30 GMT

oh I see the issue now....

Re: R710: "PoE+" injector still gets recognized as 802.3af power

brian_hoyt_6612 — Thu, 18 Aug 2016 16:07:00 GMT

Was there ever an answer to this? I too have a handful of R710 and would like to get injectors rather than whole new switch if possible.

Re: R710: "PoE+" injector still gets recognized as 802.3af power

john_d — Thu, 18 Aug 2016 16:21:29 GMT

In 9.13 ZD and I presume the corresponding SZ release, there's now a controller-wide POE mode option under the AP config that allows you to specify at, which forces PoE+ (suitable for injectors).

Works well for me on R710 / ZD 9.13 GA

Quite honestly though, in retrospect this wasn't worth all the effort / fretting anyway. I honestly don't notice much of a range or performance difference on the 2.4 radio. IMO this AP seems just as performant in AT or AF mode.

Re: R710: "PoE+" injector still gets recognized as 802.3af power

brian_hoyt_6612 — Fri, 19 Aug 2016 23:02:29 GMT

Using 9.13 and a Netgear switch forcing it worked, but you are probably right, big deal?

Re: R710: "PoE+" injector still gets recognized as 802.3af power

john_d — Sat, 20 Aug 2016 17:54:31 GMT

It seems like also, 9.13 switched the behavior of af fallback from reducing 2.4GHz tx power to reducing to 4x2 MIMO, which seems like it would have even *less* of an impact on observable performance.

The only devices I have capable of 3ss on 2.4GHz are always on 5GHz anyway.

Re: R710: "PoE+" injector still gets recognized as 802.3af power

richard_6787364 — Mon, 14 Nov 2016 23:52:42 GMT

I'm surprised the answer isn't mentioned here, and I couldn't find it on the link above at Ruckus Wireless support, although that helped point me in the right direction.

You shouldn't need to use a POE+ switch with LLDP if you have a POE+ (802.3at) compatible power injector. You need to connect to the R710 access point's CLI (command line interface) via SSH (putty.exe on TCP port 22) and type the following:

rkscli: set power-mode at

Then type:

rkscli: get power-mode

and it should show:

PoE Configured Mode : AT
Power Consumption Status : 802.3at PoE+
OK

Hope this helps!

Re: R710: "PoE+" injector still gets recognized as 802.3af power

john_d — Tue, 15 Nov 2016 00:22:01 GMT

It was alluded to in our posts above. Note that the forced AT command only started showing up a few months ago in SZ first and then undocumented but also present in ZD shortly thereafter. When this thread was created 11 months ago there was as no way to force AT.

Re: R710: "PoE+" injector still gets recognized as 802.3af power

hayward_kong — Tue, 15 Nov 2016 02:44:43 GMT

Thanks Vito,

I was about to give up on this and now it works fine in AT mode 🙂

Re: R710: "PoE+" injector still gets recognized as 802.3af power

john_d — Tue, 15 Nov 2016 21:25:17 GMT

Beware that setting this option via AP CLI may not persist past reboot. This setting is now on the controller side too -- go to Configure -> AP and select the AP. There will be a Power Mode drop down and you can force to AT from there.

Not sure where the setting is in SmartZone.

Re: R710: "PoE+" injector still gets recognized as 802.3af power

richard_6787364 — Tue, 15 Nov 2016 22:34:00 GMT

This post references setting the POE/POE+ mode on a stand-alone AP, therefore setting the option via an AP's CLI may not stay as set (configured) if the AP is connected to and controlled by a ZoneDirector appliance, and your additional comment about where to set it via the ZD appliance's configuration is helpful.

Re: R710: "PoE+" injector still gets recognized as 802.3af power

john_d — Tue, 15 Nov 2016 22:35:48 GMT

Actually I think I made the post and was ZD managing my R710 at the time 😉

It was because Ruckus's KBAs only offered AP CLI commands which, at the time, were required to enable AT autonegotiation.

Re: R710: "PoE+" injector still gets recognized as 802.3af power

petebraham — Sat, 11 Mar 2017 20:22:45 GMT

Is the AT power mode setting on the R710 CLI persistent after reboot on a stand alone AP?

Re: R710: "PoE+" injector still gets recognized as 802.3af power

ammar_abukurah — Fri, 22 Sep 2017 04:02:55 GMT

Thank you for this!

Re: R710: "PoE+" injector still gets recognized as 802.3af power

Greg_WiGuy — Tue, 17 Apr 2018 13:29:10 GMT

I'm curious, has anyone tested what would happen if all your APs were set to PoE+/at mode while some are connected to a .3af switch? I'm guessing they would just be asking for more power and be stuck in .3af Consumption status - which makes me wonder why use Auto anyway.