We're having some very aggravating PoE issues with 2960S switches powering primarily Bosch video surveillance cameras. We'll have several cameras connected to a WS-C2960S-48FPS-L switch or a stack of them, and all will come up and work correctly. At some later time, one or more of the cameras will lose connection while the others continue to function. Moving the dead camera to another port on the same switch doesn't work, neither does swapping the patch cable, doing a shut/no shut on the interface, setting power inline static/auto on the port, etc.
However, that same camera _will_ power back up when we bring a spare 2960S switch in to the IDF, using all the same patch cables & cable run out to the installed location.
We're definitely not coming anywhere near overruning the power budget on these switches.
On one of the problematic devices, I do see the following in the logs when I admin the power down then back up:
Jan 9 09:10:29.401: %LINK-5-CHANGED: Interface GigabitEthernet1/0/24, changed state to administratively down
Jan 9 09:10:39.678: %SYS-5-CONFIG_I: Configured from console by admin on vty0 (10.32.100.250)
Jan 9 09:10:39.804: %ILPOWER-7-DETECT: Interface Gi1/0/24: Power Device detected: IEEE PD
Jan 9 09:10:40.527: %ILPOWER-5-POWER_GRANTED: Interface Gi1/0/24: Power granted
Jan 9 09:10:40.726: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/24, changed state to down
Jan 9 09:10:45.676: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/24, changed state to up
Jan 9 09:10:46.677: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/24, changed state to up
Jan 9 09:10:49.839: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/24, changed state to down
Jan 9 09:10:50.840: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/24, changed state to down
The switch thinks it's still providing power to that port:
as05-sbmdf#show power inline gig1/0/24
Interface Admin Oper Power Device Class Max
--------- ------ ---------- ------- ------------------- ----- ----
Gi1/0/24 auto on 15.4 Ieee PD 0 30.0
Interface AdminPowerMax AdminConsumption
---------- --------------- --------------------
Gi1/0/24 30.0 15.4
But the link never comes back up:
as05-sbmdf#sh int gig1/0/24
GigabitEthernet1/0/24 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is b4e9.b0ea.9998 (bia b4e9.b0ea.9998)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 239/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:07, output hang never
Last clearing of "show interface" counters 00:04:53
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 0 bits/sec, 0 packets/sec
0 packets input, 38194 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
145 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
8 packets output, 2627 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
Config for all those ports is pretty minimal:
as05-sbmdf# sh run int gig1/0/24
Current configuration : 91 bytes
switchport access vlan 329
We've tried working with Bosch, but they don't have much useful to offer. The really infuriating thing is that these same cameras will come up when connected to a spare switch, but never when connected to the original switch they were on when they initially began to fail.
I did try opening a TAC case on this, but while our 2960S are still covered under their one year warranty for hardware, Cisco won't let me open a support case on them without adding them to one of our support contracts.
reliability 239/255, txload 1/255, rxload 1/255
I must admit I haven't seen a lot of threads where the OP posted a lot of very, very RELEVANT information. Hats off to you!
Right, back to business. You've got a cable issue. See the value up in "reliability"? Well those values should ALWAYS be "255/255" and neither the numerator and the denominator should go below that.
Since you're using a 2960S (you've done yourself a favour too!), you can run a TDR.
The command to run a TDR is very simple:
1. Command: test cable tdr interface G 1/0/24;
2. Wait for approximately 5 to 7 seconds;
3. Command: sh cable tdr interface G 1/0/24; and
4. Post the output to the #3 command.
I have issue with same cisco ws 2969-s,48 I connect linksys ap to the switch just work fine for port 1 to 24 and not working on port from 25 to 48
I connect cisco ap just work fine on all 48 ports
I connect non cisco ip camera not working same like linksys
I did the bellow tshoot steps
- sh down then no sh
- sh power inline showing no thing obvious power supply 740 admin auto every thing ok
Even I did many changes under power inline mode and sill the same
#PlZ help ASAP#
Which model is it? How many ports are currently using PoE?
Cisco devices will negotiate how much power is required - some of the other cameras may not, so the switch will assume the full power per port is being requested - which might not be sufficient?