12-08-2015 11:17 AM - edited 03-08-2019 03:01 AM
I have an older Cisco 2960-48PST-S PoE switch that no longer has power on any of it's ports. I plug in a device tha requires PoE and it doesn't boot up/turn on. Running the latest recommended firmware - 12.2.(55)SE10. Normal network connectivity works just fine on each port, but not for any device that requires PoE. I tried plugging my device into every port without any luck. I followed this link and everything looks normal to me.
sho env all = fan is ok, temp is ok, power is ok
show power inline = (i won't copy it all as it's exactly the same)
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/1 auto off 0.0 n/a n/a 15.4
Fa0/2 auto off 0.0 n/a n/a 15.4
Fa0/3 auto off 0.0 n/a n/a 15.4
Fa0/4 auto off 0.0 n/a n/a 15.4
Fa0/5 auto off 0.0 n/a n/a 15.4
Fa0/6 auto off 0.0 n/a n/a 15.4
Fa0/7 auto off 0.0 n/a n/a 15.4
Is there anything else I can do? Does it mean the switch is dead when it comes to PoE? It's around 7 years old.
Solved! Go to Solution.
12-09-2015 01:23 PM
Ryan,
the only thing I have had that caused the Poe to fail was a lighning strike on the building, which caused the Poe to shut down. but reloading the switch fixed it up.
So if you removed all connections to the switch, reloaded and then connected one Poe device with a short lead and it still doesn't work and you have followed everything else in the troubleshooting guide then I guess it's a new switch.
12-08-2015 10:30 PM
don't you see
CHISWS05#sh power inline
Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
1 370.0 126.0 244.0 < this line with available power?
if you don't then Poe definately stuffed
12-09-2015 05:37 AM
Sorry, yes I do see that.
HHSSWT22#sho power inline
Available:370.0(w) Used:0.0(w) Remaining:370.0(w)
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/1 auto off 0.0 n/a n/a 15.4
Fa0/2 auto off 0.0 n/a n/a 15.4
Fa0/3 auto off 0.0 n/a n/a 15.4
Fa0/4 auto off 0.0 n/a n/a 15.4
Fa0/5 auto off 0.0 n/a n/a 15.4
Fa0/6 auto off 0.0 n/a n/a 15.4
Fa0/7 auto off 0.0 n/a n/a 15.4
Fa0/8 auto off 0.0 n/a n/a 15.4
Fa0/9 auto off 0.0 n/a n/a 15.4
Fa0/10 auto off 0.0 n/a n/a 15.4
Fa0/11 auto off 0.0 n/a n/a 15.4
Fa0/12 auto off 0.0 n/a n/a 15.4
Fa0/13 auto off 0.0 n/a n/a 15.4
Fa0/14 auto off 0.0 n/a n/a 15.4
Fa0/15 auto off 0.0 n/a n/a 15.4
Fa0/16 auto off 0.0 n/a n/a 15.4
Fa0/17 auto off 0.0 n/a n/a 15.4
Fa0/18 auto off 0.0 n/a n/a 15.4
Fa0/19 auto off 0.0 n/a n/a 15.4
--More-- Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/20 auto off 0.0 n/a n/a 15.4
Fa0/21 auto off 0.0 n/a n/a 15.4
Fa0/22 auto off 0.0 n/a n/a 15.4
Fa0/23 auto off 0.0 n/a n/a 15.4
Fa0/24 auto off 0.0 n/a n/a 15.4
Fa0/25 auto off 0.0 n/a n/a 15.4
Fa0/26 auto off 0.0 n/a n/a 15.4
Fa0/27 auto off 0.0 n/a n/a 15.4
Fa0/28 auto off 0.0 n/a n/a 15.4
Fa0/29 auto off 0.0 n/a n/a 15.4
Fa0/30 auto off 0.0 n/a n/a 15.4
Fa0/31 auto off 0.0 n/a n/a 15.4
Fa0/32 auto off 0.0 n/a n/a 15.4
Fa0/33 auto off 0.0 n/a n/a 15.4
Fa0/34 auto off 0.0 n/a n/a 15.4
Fa0/35 auto off 0.0 n/a n/a 15.4
Fa0/36 auto off 0.0 n/a n/a 15.4
Fa0/37 auto off 0.0 n/a n/a 15.4
Fa0/38 auto off 0.0 n/a n/a 15.4
Fa0/39 auto off 0.0 n/a n/a 15.4
Fa0/40 auto off 0.0 n/a n/a 15.4
Fa0/41 auto off 0.0 n/a n/a 15.4
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/42 auto off 0.0 n/a n/a 15.4
Fa0/43 auto off 0.0 n/a n/a 15.4
Fa0/44 auto off 0.0 n/a n/a 15.4
Fa0/45 auto off 0.0 n/a n/a 15.4
Fa0/46 auto off 0.0 n/a n/a 15.4
Fa0/47 auto off 0.0 n/a n/a 15.4
Fa0/48 auto off 0.0 n/a n/a 15.4
HHSSWT22#
12-09-2015 01:23 PM
Ryan,
the only thing I have had that caused the Poe to fail was a lighning strike on the building, which caused the Poe to shut down. but reloading the switch fixed it up.
So if you removed all connections to the switch, reloaded and then connected one Poe device with a short lead and it still doesn't work and you have followed everything else in the troubleshooting guide then I guess it's a new switch.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide