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Cisco 2960 PoE switch ports no longer have PoE

RB117892
Level 1
Level 1

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.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/troubleshooting/g_power_over_ethernet.html#wp1010511

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.

1 Accepted Solution

Accepted Solutions

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.

View solution in original post

3 Replies 3

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

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#

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.

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