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E-MSM466-R - Ethernet power surge protector/suppressor ?

 
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FranoM
Advisor

E-MSM466-R - Ethernet power surge protector/suppressor ?

Hi,

 

HP firmly suggest to install an Ethernet surge protector / suppressor (c.f. « HP E-MSM466-R Access Point Installation Guide ») when installing an E-MSM466-R outdoor.

 

Unfortunately HP doesn't provide any surge protector reference (Neither the pre-sales support or technical support provide one).

 

I tried to use the BlackBox PoE Surge protector (technical's specs here : http://www.blackbox.fr/fr-fr/Download/ItemFile.cfm?IdItemFile=10699&IdLanguage=2&nocache=false ). It works fine when using an HP PoE injector (J9407B) but doesn't work (AP doesn't boot (looks like not powered)) when using PoE switch (tested with 2520G-8-PoE and 2915-8G-PoE).

 

As previously said, I got no response from technical and pre-sale support.

 

Does anyone have a PoE surge Protector reference ?

 

Regards,

1 REPLY 1
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FranoM
Advisor
Solution

Re: E-MSM466-R - Ethernet power surge protector/suppressor ?

Explanations / Solution :

 

There is two modes of PoE alimentation :

  • Mode A
  • Mode B

 

MSM466-R does support Mode A and B.

 

The power-injector works on Mode B.

The PoE Switch works in Mode A.

 

The PoE Surge protector I used is working in Mode B. (That's why it's works fine yith PoE injector and not with the switch).

 

Solution : PoE surge protector should be in accordance with the way of PoE Mode injection is done !