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5420M failing POE check with Fluke LinkIQ

5420M failing POE check with Fluke LinkIQ

Scott_J
New Contributor II

‎08-06-2024 11:01 AM

Attempting to figure out why POE is denied with an overload fault when doing a POE load test with a new LinkIQ. It works fine with a Linkrunner G2. 

show inline-power configuration ports 23

Port     Config    Operator     Priority  Detection                   Classification  Fast  Label
                   Limit
------   --------  -----------  --------  --------------------------  --------------  ----  --------------
23       Enabled   30000 mW     Low       802.3af-only                802.3bt-type4   N
debug poe show transfers latest
PoE Transfer Information:
Transfer time 1722964709.849, 08/06/2024 12:18:29
  [78085] TX   +0.000                    : 28 03 00 01 01 01 02 01 03 01 ff 34
          RX   +0.049                    : 28 03 00 61 01 61 02 61 03 61 ff b4
  [78086] TX   +0.020                    : 28 04 04 01 05 01 06 01 07 01 ff 45
          RX   +0.049                    : 28 04 04 61 05 61 06 61 07 61 ff c5
  [78087] TX   +0.020                    : 28 05 08 01 09 01 0a 01 0b 01 ff 56
          RX   +0.049                    : 28 05 08 61 09 61 0a 61 0b 61 ff d6
  [78088] TX   +0.020                    : 28 06 0c 01 0d 01 0e 01 0f 01 ff 67
          RX   +0.049                    : 28 06 0c 61 0d 61 0e 61 0f 61 ff e7
  [78089] TX   +0.020                    : 28 07 10 01 11 01 12 01 13 01 ff 78
          RX   +0.049                    : 28 07 10 61 11 61 12 61 13 61 ff f8
  [78090] TX   +0.020                    : 28 08 14 01 15 01 16 01 17 01 ff 89
          RX   +0.049                    : 28 08 14 61 15 61 16 31 17 61 ff d9
  [78091] TX   +0.020                    : 30 09 01 ff ff ff ff ff ff ff ff 32
          RX   +0.049                    : 30 09 01 00 00 00 00 00 c3 00 00 fd
  [78092] TX   +0.000                    : 30 0a 05 ff ff ff ff ff ff ff ff 37
          RX   +0.049                    : 30 0a 05 00 00 00 00 00 c3 00 00 02
Statistics:
  txOk        : 78092
  rxOk        : 78092
Port 23

Configured Admin State: enabled
Inline Power State    : searching
MIB Detect Status     : searching
Label                 :
Operator Limit        : 30000 milliwatts
PD Class              :
Max Allowed Power     : 0.0 W
Measured Power        : 0.0 W
Line Voltage          : 0.0 Volts
Current               : 0 mA
Fault Status          : None
Detailed Status       :
Priority              : low
Power Up Status       : 2-pair 15W
Powered Channels      : 0
Detection             : 802.3af-only
show inline-power info ports

Port    State           Class      Volts    Curr    Power     Fault
                                            (mA)   (Watts)
1       searching       ------      0.0       0      0.000    None
2       searching       ------      0.0       0      0.000    None
3       searching       ------      0.0       0      0.000    None
4       searching       ------      0.0       0      0.000    None
5       searching       ------      0.0       0      0.000    None
6       searching       ------      0.0       0      0.000    None
7       searching       ------      0.0       0      0.000    None
8       searching       ------      0.0       0      0.000    None
9       searching       ------      0.0       0      0.000    None
10      searching       ------      0.0       0      0.000    None
11      searching       ------      0.0       0      0.000    None
12      searching       ------      0.0       0      0.000    None
13      searching       ------      0.0       0      0.000    None
14      searching       ------      0.0       0      0.000    None
15      searching       ------      0.0       0      0.000    None
16      searching       ------      0.0       0      0.000    None
17      searching       ------      0.0       0      0.000    None
18      searching       ------      0.0       0      0.000    None
19      searching       ------      0.0       0      0.000    None
20      searching       ------      0.0       0      0.000    None
21      searching       ------      0.0       0      0.000    None
22      searching       ------      0.0       0      0.000    None
23      denied          ------      0.0       0      0.000    Overload
24      searching       ------      0.0       0      0.000    None

Is there a way to see the negotiation for POE that I'm missing? Because the switch says it's type 4 and the meter comes back at type 8 but shows type 3 when testing a Cisco switch. I'm curious if its a problem with lldp/cdp negotiation. 

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1 REPLY 1

hydr0gen
New Contributor II

2 weeks ago

Did you ever receive an answer to your question?  I have had some problems using the Fluke LinkIQ detecting power on certain ports.  I wasn't sure if there was a setting that needed to be changed to allow the Fluke to probe the port?  I haven't had your specific situation occur on any of my 5420M-48W-4YE's though.

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GTM-P2G8KFN