PoE Switch interface error

One of a AP connecting to a Cisco PoE switch always loss heartbeat and resume later automatically.

I have checked the interface of the switch connecting to this AP, and it shows a high values in the interfaces. Is it indicated an issue in the switch physical interface or the AP itself problem ? How can I further identify the problem ?

Thx
AXISHKAsked:
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masnrockCommented:
Have you been able to see whether a higher number of users utilize that AP? One thing you could do is move the AP to a different switch port. If the issue persists while on the new switch port, the issue is more likely tied to the AP itself. If the issue stops, then the issue is more likely tied to the old switch port.
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Craig BeckCommented:
What AP are you using?
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AXISHKAuthor Commented:
Ruckus R500. Thx
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Craig BeckCommented:
Thanks. Can you post the show interface output please?
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AXISHKAuthor Commented:
POES1#sh interface gig1/0/4
GigabitEthernet1/0/4 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet, address is 381c.1a54.9684 (bia 381c.1a54.9684)
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, 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 00:00:00, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 190
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 122000 bits/sec, 209 packets/sec
  5 minute output rate 4775000 bits/sec, 400 packets/sec
     20165161 packets input, 7987537679 bytes, 0 no buffer
     Received 190210 broadcasts (99648 multicasts)
     0 runts, 0 giants, 0 throttles
     168 input errors, 134 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 99648 multicast, 0 pause input
     0 input packets with dribble condition detected
     26479102 packets output, 23077883869 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
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Craig BeckCommented:
You have a cable issue by the look of it.
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AXISHKAuthor Commented:
Do u mean the CAT5e cable connecting the AP and PoE switch ? How does it tell that ? Thx
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Craig BeckCommented:
Yes.

168 input errors, 134 CRC

That usually always indicates a layer 1 problem.  99% of the time that's a faulty cable.
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AXISHKAuthor Commented:
Thx.
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