Catalyst 3750 PoE issue with Axis 1344-E

[ndarkness]

Hello,  I'm facing an issue with my 3750 switcher and some axis 1344-E IP cameras  I have.

The thing is that I want to power them over ethernet, PoE, but I'm not sure whether the Cisco support this kind of camera or not. In order to check out that, I have enabled LLDP and the debugging feature of the Cisco on the interfaces. The outputs are below

#show interfaces status

Port      Name               Status       Vlan       Duplex  Speed Type

Fa1/0/16                     connected    1          a-full  a-100 10/100BaseT

Fa1/0/17                     connected    1          a-full  a-100 10/100BaseT

Fa1/0/18                     connected    1          a-full  a-100 10/100BaseT

...

#show power inline

Module   Available     Used     Remaining

          (Watts)     (Watts)    (Watts)

------   ---------   --------   ---------

1           370.0       46.2       323.8

Interface Admin  Oper       Power   Device              Class Max

                            (Watts)

--------- ------ ---------- ------- ------------------- ----- ----

Fa1/0/16  auto   on         15.4    Ieee PD             4     15.4

Fa1/0/17  auto   on         15.4    Ieee PD             4     15.4

Fa1/0/18  auto   on         15.4    Ieee PD             4     15.4

#show log

...

Jul 19 14:52:27.819: ilpower_get_power_via_mdi_tlv_for_idb: Sending LLDP TLV on Fa1/0/18

Jul 19 14:52:27.819:     req pwr 130, alloc pwr 130, pwr type 2, pwr class 5 pwr prio 3

...

Jul 19 14:53:56.252: ilpower_get_power_via_mdi_tlv_for_idb: Sending LLDP TLV on Fa1/0/17

Jul 19 14:53:56.252:     req pwr 130, alloc pwr 130, pwr type 2, pwr class 5 pwr prio 3

Jul 19 14:53:35.692: ilpower_get_power_via_mdi_tlv_for_idb: Sending LLDP TLV on Fa1/0/16

Jul 19 14:53:35.692:     req pwr 130, alloc pwr 130, pwr type 2, pwr class 5 pwr prio 3

Jul 19 14:53:34.073:     req id 0, man id 1, pwr avail 0, pwr man -1

Jul 19 14:53:34.073: ilpower_powerman_power_available_tlv: about sending patlv on Fa1/0/17

Jul 19 14:53:30.407: ilpower_powerman_power_available_tlv: about sending patlv on Fa1/0/16

Jul 19 14:53:30.407:     req id 0, man id 1, pwr avail 15400, pwr man -1

Jul 19 14:53:46.286: ilpower_powerman_power_available_tlv: about sending patlv on Fa1/0/18

Jul 19 14:53:46.286:     req id 0, man id 1, pwr avail 15400, pwr man -1

So, reading the log I'm afraid that the Cisco doesn't support the power which is being requirred by the cameras, therefore, it tries to set the maximum amount of power that it can give, which is the 15.4W. Am I right?

Looking into internet I have seen that may be I could set up the power of the cameras through using LLDP, is that possible for my swithc?

Thanks in advance,

regards!

[Edison Ortiz · Accepted solution]

The message indicates the device is set as pwr class 5 while the switch supports up to pwr class 4.

According to the AXIS documentation, it seems you may have an option on the device for pwr class 4.

http://www.axis.com/academy/installation_challenges/poe.htm

PoE with P13xx-E

Some cameras are specified with two different classes of PoE. This is because products can require different wattages, depending on whether they are used with or without extra equipment, such as heating or cooling. The first PoE number specifies the wattage for the product itself, whereas the second number specifies the wattage needed for the product, including extra equipment. The AXIS P13xx-E is an enclosed product, and is specified as "PoE IEEE 802.3af max. 12.95 W or High PoE max 25.5 W".

Can you reach out to AXIS?

[ndarkness]

Hi Edison,

Thanks for replying, I found the information quiet interesting and enlightening.

Yes I think I can reach out the cameras. Are you thinking of reaching them and change their working mode to power class 4?

Thanks again.

Regards,

[Edison Ortiz · Accepted solution]

If they are changed to pwr class 4, it should work.

[ndarkness]

ok I will try it, this monday.

Thanks

[TM13]

My Axis P1355-E is running on class 4 with 15W by auto on the switch, but it is not working, disconnecting and connecting to the switch always, found the issue?