02-05-2012 10:09 AM - edited 03-07-2019 04:44 AM
Hi,
I have a situation where two of my CGS-2520-16S-8PC switches are not applying POE power to the copper ports, but showing power inline, two ports are showing power applied. Shutting down the port and re-enabling it will return the port to normal and the phone will connect.
I'm running cgs2520-lanbasek9-mz.122-58.EY2 after using 122-58-se1. Happening on both, but i have more switches running EY2 with no issues at the moment.
Using DC power supply averaging around 53v.
Thanks,
Andrew
02-05-2012 02:20 PM
If port goes down and then comes up after you enable it, it could be a port security issue, not relating to poe settings.
Check port security settings.
Hope this helps
Eugen
02-05-2012 04:10 PM
hi
No port security on this switch yet.
Thanks
Andrew
Sent from Cisco Technical Support iPhone App
02-05-2012 04:51 PM
How is your power inline configured? auto, static, never?
02-05-2012 05:25 PM
auto
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02-05-2012 06:36 PM
Did you try to set the power inline to static on a port?
Choose a port that will have an ip phone attached and shut it down, config "power inline static" with no value,( switch will automatically allocate 15.4W max) then open the port again.
Eugen
02-05-2012 06:56 PM
Also can you post the output of "show power inline consumption" and "show interface "
02-06-2012 04:30 AM
#sh power inline consumption
Interface Consumption Admin
Configured Consumption (Watts)
---------- ----------- -------------------
Fa0/17 NO 0.0
Fa0/18 NO 0.0
Fa0/19 NO 0.0
Fa0/20 NO 0.0
Fa0/21 NO 0.0
Fa0/22 NO 0.0
Fa0/23 NO 0.0
Fa0/24 NO 0.0
#sh power inline
Available:65.0(w) Used:7.0(w) Remaining:58.0(w)
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Fa0/17 auto on 7.0 Ieee PD 2 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
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
FastEthernet0/17 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is f025.72cc.8b13 (bia f025.72cc.8b13)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 47000 bits/sec, 36 packets/sec
23478 packets input, 4099586 bytes, 0 no buffer
Received 13 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
6985367 packets output, 1274518081 bytes, 0 underruns
02-06-2012 05:08 AM
I see that you get power on Fa0/17. Do you have ip phones connected to other 7 ports? Is cdp enabled on those ports?
Are the ip phones Cisco? If they are not, you should set the power inline to static.
Eugen
02-05-2012 07:35 PM
Sounds like an IOS bug to me.
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