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How to switch off and on POE on a device

Entrust Dave
Level 1
Level 1

Dear Sirs

I would like to switch off and back on again the POE function on one channel of my Cisco 2960 Catalyst switch.

I have a number of Latte Panda PCs attached and sometimes one may need to be powered down and powered up again without switching the entire switch off and back on. I can access the Management port and should be able to do this via this port.

I have trawled through some YouTube stuff but to no avail. I was wondering if I could limit the power going to a particular port and set it to zero watts and then switch it back to "auto". This, I think, could have the desired effect.

Is there a written procedure I could follow?

Many thanks in advance for your help.

Kindest Regards

Dave Berry

18 Replies 18

Leo Laohoo
Hall of Fame
Hall of Fame
conf t
 interface <PORT>
 power inline NEVER
end

Entrust Dave
Level 1
Level 1
Sorry to ask but I have tried this but need more text to explain as it doesn't seem to work for me at the moment.



conf t

interface

power inline NEVER

end



Need a bit more info on how to switch back on as well






Do you have access to the switch, don´t you? 

 

If does, them, open up the cli with Putty on any other appropriate program and run this command. You can replace the "fastethernet0/2" for any interface on the switch.

 

Switch(config)#conf t

Switch(config)# interface fastethernet0/2

Switch(config-if)# power inline never

OK I'm getting slightly further...



Switch(config)#conf t this works

Switch(config)#interface port-channel9

Gets me to this

Switch(config-if)#

But this doesn't work

Switch(config-if)# power inline never



The switch is a 2960 Catalyst (not sure if this makes a difference)

Sorry to be a pain!



@Entrust Dave wrote:
Switch(config)#interface port-channel9
Switch(config-if)# power inline never

WTF. 

Disable PoE.  On a Port Channel?  

Read.  Understand.  Is that too much to ask?Read. Understand. Is that too much to ask?


@Entrust Dave wrote:
Sorry to ask but I have tried this but need more text to explain as it doesn't seem to work for me at the moment.

Go HERE.

Hello

Is that 2960 POE capable?
show power inline


Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

Leo Laohoo
Hall of Fame
Hall of Fame

Ok, let's make this very, very simple:  

  • Turn OFF PoE:  SHUT the port
  • Turn ON PoE:  Enable (no shutdown) the port

What Leo says.

Just shut down the port it is connected to, and wait 5sec and turn on again..

 

Please remember to select a correct answer and rate helpful posts
/ Carsten

Just so we are confusing folks - We don't turn off switch port just to turn off PoE. When you use "shut" you are turning off the port transmit/receive and PoE. To disable PoE only for an interface, go into interface config mode and use "power inline never" and then to enable PoE use "power inline auto"

Leszek Lozicki
Level 1
Level 1

I would like to reactivate the topic. I, in turn, need to perform this task from a third-party control system such as extron or crestron.
Is there a command that will disable and enable an individual port?
can be ASCI or HEX

Hello,

The command in question would be:
Int gigX/X/X

power inline never / power inline auto

or

shutdown/ no shutdown

BR

****Kindly rate all useful posts*****

but what would the command actually look like?
e.g. in projectors, turning on is usually a command
POWER ON <CR>
<CR> means enter
in HEX it is 50 4F 57 45 52 20 4F 4E 0A

and does the switch accept commands over port 23?
i.e. telnet or other parameters?

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