PoE Power injector 802.3at and 802.3af

[muki30001]

I do not know if this is the right forum to ask this question

I'm trying to find technical specs of AIR-PWRINJ4

I received Power injector Model 740-64214-001 of Ruckus Wireless

That's the only thing I've found on Google on Power injector Model  740-64214-001

I want to know if its specification is the same as that of Cisco AIR-PWRINJ4

i have AIR-CAP3502 that work on Standard power supply

I want to use the Ruckus Wireless Power injector instead of the Regular power supply

Will this fit Cisco's AIR-CAP3502?

[muki30001]

it is not controller based

it is standalone / autonomous

If I change the power settings
Just to try
Could it do some damage to the access point?

[patoberli]

No, not as far as I know.

Here you find some information (at least for the older AP models): https://www.cisco.com/c/en/us/td/docs/wireless/access_point/15-3-3/configuration/guide/cg15-3-3/cg15-3-3-chap4-first.html#25045

[muki30001]

I saw that link It says

Using a Power Injector

If you use a power injector to provide power to the 1040, 1130, 1140, 1240, 1250, or 1260 access point, select Power Injector on the System Software: System Configuration page and enter the MAC address of the switch port to which the access point is connected.

There is no option to select power injector

only Pre-standard Compatibility and Power Negotiation

I read the manual of the access point
And I did not find any information about it

That's the most detailed thing I've found

It's not clear what I'm supposed to choose

and how do i find the switch port mac address ?

[patoberli]

Sorry I don't have any more information about PoE than that.



Regarding the mac address, if it's a Cisco Catalyst

#sh int g1/0/1

GigabitEthernet1/0/1 is up, line protocol is up (connected)

Hardware is Gigabit Ethernet, address is bcf1.f29e.d881 (bia bcf1.f29e.d881)

[muki30001]

it is a cisco switch model SG200-26 26-Port Gigabit Smart Switch

i use his gui not command line

about the Access point

Could it be that the heat is due to the incorrect setting of the transmission power

Last night I was in a place where there were quite a number of such access points
None of them was hot

[muki30001]

Are these settings correct?
I set it to a lower one
The access point is still hot


Is there anything else to do?

[patoberli]

No idea why it gets hot, but I recommend you to use the CLI for configuration.
The switch supports 802.3af, so it's a current version of PoE and not a pre-standard one.
Which setting did you set to a lower one?
In any case, I wouldn't worry to much if it's running.

[muki30001]

First of all, thanks to everyone who responded and help

I did not understand the answer

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@patoberli wrote:
The switch supports 802.3af, so it's a current version of PoE and not a pre-standard one.

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It is a switch without PoE

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@patoberli wrote:
Which setting did you set to a lower one?

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Those at an access point
It is less hot but still hot (I've attached a picture of the settings at an access point)

What is the difference between the top line and the bottom line?

[patoberli]

Ah sorry, misread SG200-24P (which would offer PoE).
Those two lines on your image are the sending and suggested receiving power for the radius interface. Not 100% sure about the Client Power, but the Transmit Power is the signal strength of the AP signal. 17 dBm is roughly 100 mW with the standard or built-in antenna (could also be 50, depending on the country). Anyway, that is only radio and is a tiny fraction of the full power usage.

[muki30001]

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@patoberli wrote:
Not 100% sure about the Client Power, but the Transmit Power is the signal strength of the AP signal. 17 dBm is roughly 100 mW with the standard or built-in antenna

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Until now I was sure I had reduced the power of transmission
After reading some online Power Transmission 3500 data sheet
I think I did the opposite
I'm not sure any of this.

Transmitter Power (dBm):  was on 5

i set it to 8

According to the information page The higher the number, the higher the signal strength

So why on the other side where the low number is listed "max"

What parameters do I need to mark so that the transmission power will be the lowest ?

Are the other settings on the page OK ? (Autonomous-AP that is connected to the router using a network cable)

[patoberli]

8 would be the lowest setting, 1 the highest.

Check the information in this thread for understanding the power levels and dBm:

https://supportforums.cisco.com/t5/getting-started-with-wireless/access-point-power-levels/td-p/1467363

[muki30001]

It was on 8 and it was warmer
Now it's about 14 that's less hot

why on the side that there is the lowest number is listed "max" ??

It is not clear

[patoberli]

As far as I remember, Client Power means what signal strength the client should use for communicating. The more power, the more battery drain of the mobile client.
But I agree, it would make more sense if the word "max" would be listed on the left and not right side of the table.