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What can I have configured bad, when PoE on HP 3500yl-48G isn't working?

The IP phone, Linksys SPA942, works at another PoE switch.

Port configuration:

  • PoE Enabled: Yes
  • Maximum Watts: 17
  • Priority: low
  • Allovation: usage
  • LLDP
    • Dot3 LLDP TLV: Enabled
    • PoE LLDP-MED: Disabled
  • Configuration type: empty
  • Threshold: 80

Statistics:

  • Detection status: Searching...

configuration screenshot

my setup connected

Esa Jokinen
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martin
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1 Answers1

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Both HP 3500yl-48G-PoE+ & Linksys SPA942 supports 802.3af PoE standard and the power consumption should only be aroung 5 Watts, so your configuration seems compatible.

HP Linksys SPA942 IP phone supports LLDP-MED (Media Endpoint Discovery, an enhancement of LLDP) for its PoE management. However, currently your port 23 has PoE LLDP-MED disabled. I'd try enabling LLDP-MED.

Esa Jokinen
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  • Thank you for edit and answer. As suggested I tried to change LLDP to TLV on, MED off; TLV off MED on; both on; both off, but none of this combination helped to solve the problem... – martin May 28 '20 at 17:25