Cisco 3560cx poe max

[Dylan2505]

Hello,

We are using a cisco 3560cx to connect speakers and microphones. One of the microphones require a higher wattage to work properly. I read online that the max wattage is 15.4 watts, is this true? Or is there a way to get a higher wattage output. We are only using 4 ports out of the 12. Any help would be greatly appreciated.

[Joseph W. Doherty]

There are various PoE power "standards", some (I last recall) supporting up to 60w per port.  Additionally, besides per port ratings, there can be overall power limitations.

As to 3560cx, the datasheet should list PoE specs.  Have you been unable to find them?

[Joseph W. Doherty]

I just checked.  Overall PoE is up to 240w and ports are PoE+, 30w.

[marce1000 · Accepted solution]

  - Ref : https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3560-cx-series-switches/datasheet-c78-733229.html
    >...●  PoE power: The technology supports PoE and PoE+ for all the supported speeds and cable types.

   Also check Table 2. and Table 3.  for more info's

 M.

[Dylan2505]

I have applied this change and the speaker is still only pulling 15.4 watts. Ports 5 through 12 are disabled and ports 1 through 4 are configured with power inline auto max 30000.

[marce1000]

- @Dylan2505  What type of speaker (brand & model) is this ?

    M.

[Dylan2505]

Shure MXA 902

[Joseph W. Doherty]

". . . ports 1 through 4 are configured with power inline auto max 30000."

Try "power inline static".

[cory-j-fowler]

You need to enable "2-event" mode on each and every port.  The default for the 3560CX devices is to push 15.4W then let CDP or LLDP negotiate anything more when the link is established and the device can communicate.  This default behaviour unfortunately assumes all PoE+ devices talk CDP or LLDP when some PoE+ devices do not even have ethernet PHYs.  Google brought me here looking for the answer I ended up finding elsewhere and I like an internet that has the answers faster.

So for anyone who needs 30W see this: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960cx_3650cx/software/release/15-2_6_e/configuration_guide/b_1526e_consolidated_3560cx_2960cx_cg/m_configuring_2-event_classification.html

[Leo Laohoo]

3560CX has 240.0wac PoE allowance and each port can do up to 30.0wac until the allowance runs out.

[Jens Albrecht]

Hello @Dylan2505,

as far as I know Shure has added LLDP support for PoE+ negotiation for layered switches about one year ago with firmware version 6.1.64.

Hence the easiest way is to enable LLDP on your 3560CX globally so that you can use any port to connect the microphones in the future without any further configuration.
To do this enter the command "lldp run" in global config mode and then save the configuration.

In case you also need to connect other PoE devices that do not support LLDP, then you can also configure a single port with the required power settings. Check the data sheet to find out how much power is needed by such device.
Let's take your mic as an example which has a power consumption of 24 Watt maximum according to the data sheet.
Then go to the port e.g. interface gi0/5 and issue the command "power inline static max 24000" to provide 24 Watt on this single port.

Anyway, LLDP is the easiest and preferred way and should work with your Shure microphone.

HTH!