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HankBurton
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‎08-15-2016 12:52 PM - edited ‎08-15-2016 12:52 PM

‎08-15-2016 12:52 PM - edited ‎08-15-2016 12:52 PM

HPE 2530 switch problems with POE and Cisco phones with key management unit

I've installed an HP 2530 48 port switch, and I'm having problems getting Cisco 8851 phones with a key management side car / add on.  The KEM won't power up on all phones.  There are five phones with this setup. One actually powers on, but the other 4 don't.  I cannot tell if it's a config issue on the switch or something with the phone config.  Unfortunately, I don't have access to the phone config.

With the default switch configuration, the phones startup and indicate that the accessory cannot be started. When I look at the phone log, I find a line item indicating that a request for power is made but it is denied.  This is with the POE+ option TLV enabled.

If I turn off POE+ and just use LLDP-MED, the accessory still doesn't power up but there is no message about the accessory not being started.  When I look at the phone log, I find a lite item about a timeout occuring when the request for additional power is made.

I don't manage the phones.  I'm trying to get the HP switch in place to avoid having my client purchase the Cisco switches the phone vendor wants to install.  There's almost a 3x price difference !!!

Thanks for your help.

 

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