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How to switch on poe function at switch port - Catalyst Cisco Computers & Internet

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telnet to the IP address of the Cisco switch
Enter the telnet access password for the Cisco swict when requested, and then the "Enter" key.
Type "enable" at the command prompt, and then the "Enter" key.
Enter the Privileged Exec password when requested at the command prompt, and then the "Enter" key. Then enter "configuration terminal" at the command prompt, and then the "Enter" key.
Type "interface fastethernet0/1," replacing the "fastethernet0/1" with the name of an interface in which you wish to enable PoE, and then the "Enter" key. Then, while in interface configuration mode, type "power inline auto" and then the "Enter" key. Repeat this step for each interface in which PoE is required.
Type "end" at the command prompt and then the "Enter" key, copy running-config
Below is some commands to run, I don't have any power on the interface but this will show you if this is working...
SW1#sh power inline fastEthernet 0/1
Available:360(w) Used:0(w) Remaining:360(w)
Interface Admin Oper Power Device Class Max
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/1 auto off 0.0 n/a n/a 15.4
Run this command to see the interface is up.....
SW1# sh interface fastEthernet 0/1 ' in protocol
FastEthernet0/1 is up, line protocol is up (connected)
SW1#sh cdp interface fastEthernet 0/1
FastEthernet0/1 is up, line protocol is up
Encapsulation ARPA
Sending CDP packets every 60 seconds
Holdtime is 180 seconds


Posted on Nov 26, 2014


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  • 137 Answers

SOURCE: i have aProSafe® 16-port 10/100 Desktop

your ISP cable shuld be go to WAN or DSL port means main cat5 cable.

Posted on Apr 04, 2010

SOURCE: How can I activate PoE

in the console prog' type,
conf t
int fast 1-12
no poe-shutdown

Posted on Jul 23, 2012

Chris Hunt

  • 1342 Answers

SOURCE: We have a Cisco 4948G set up for our network and everytime we try to plug in a PoE switch threw ethernet ports it shuts down what ever port the PoE switch is plugged into, how can i stop this from hap

Are you sure this unit can handle PoE? Here is the link from Cisco.

Posted on Jun 24, 2014

Testimonial: "I'm not sure i just want to run a CAT5e cable from my 4948G to a PoE cisco 8 Port switch, Not trying to power the either switch with PoE, just want the 8-Port PoE switch for testing phones and Access Points"

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How to resolve PoE fault hp5400zl

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and have the serial number of the switch handy. have the switch plugged in and running and have a laptop and a console cable ready before you get HP on the phone. If it comes down to being a problem with a part they will either send you the part you need OR the whole switch depending on what the problem is with the switch. Most PoE faults are power supply problems. if your switch has more than one power supply be sure the connect both of them to power as HP POE switches that have more than one power supply, 1 power supply gives power to a certain portion of ports and the other power supply will give power to another portion of the ports. Much good luck!

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1 Answer


If your switch does not support PoE, you'll have to use a power injector which should be enclosed with your router package.
connect the switch to the injector using one of the two ports in the injector (should be labeled with a small drawing or writing to differentiate which port of the two connects to the switch and which connects to the router), power the injector up, connect the other port to the router.

good luck

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How can I activate PoE port on avaya2526T switch?

Try this:

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PoE indicator light turns from Green to Amber when I plug in a PoE phone. phone does not come up but will in another switch. Set-up is the same on both switches. 2610-24PWD J9087A

How much power is in use on this switch? it might be using too much, or the PoE might be faulty. Contact support by calling 1-866-my-procurve

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1 Answer

I am trying to add an additional PoE device, put it will not power up. How can I tell the switch to power up a specific port, or put the switch into automatic mode?

Are you within the power budget?

Power feeding of Ethernet is limited for fixed 10BASE-T/100BASE-TX ports. The solution can provide maximum output power per PoE port up to 15.4W on 12 ports or 7.5W on 24 ports simultaneously. The Switch provides independent overload and short-circuit protection for each port, LED indicators for power status per PoE port, and supports IEEE802.3af MIB for Power over Ethernet functionality.
For each attached 802.3af-compliant device, the Switch automatically senses the load and dynamically supplies the required power. The Switch delivers power to a device using the two data wire pairs in the twisted-pair cable. Each port can provide up to 15.4W of power at the standard -48 VDC voltage.


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