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This port has been disabled because Link has been found to be fluctuating between Up and Down states rapidly

Line protocol is down (err-disabled)

HP Blade Server Network doesn't work

Situation: 1. One of HP 480c full Blade network doesn't work.

2. Tried different slot, but has the same problem.

3. Other Blade doesn't have this issue.

4. HP tech support has replaced two System boards.

5. Upgraded all drivers and firmware.

6. Re-installed the Windows 2008.

7. When we ran Cisco Network Assistant, I got this Warming " This port has been disabled because Link has been found to be fluctuating between Up and Down states rapidly. Reason could be bad physical connector hardware or drivers on the switch port or connecting device is faulty" as shown below.

Description: Gi0/7: This port has been disabled because Link has been found to be fluctuating between Up and Down states rapidly. Reason could be bad physical connector hardware or drivers on the switch port or connecting device is faulty.

Recommendation: Replace physical connector or upgrade drivers on switch port or try replacing cable and enable port again.

Also the show interface shows "line protocol is down (err-disabled) "

GigabitEthernet0/7 is down, line protocol is down (err-disabled)

  Hardware is Gigabit Ethernet, address is 001e.79bb.ae87 (bia 001e.79bb.ae87)

  MTU 1500 bytes, BW 1000000 Kbit, 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, link type is auto, media type is 1000BaseX

  input flow-control is off, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 12w0d, output 2w4d, 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 0 bits/sec, 0 packets/sec

     7134782 packets input, 1356058468 bytes, 0 no buffer

     Received 4330407 broadcasts (4092380 multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 4092380 multicast, 0 pause input

     0 input packets with dribble condition detected

     272944294 packets output, 50175381267 bytes, 0 underruns

     0 output errors, 0 collisions, 3 interface resets

     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

Resolution: 1. Use shutdown and no shutdown commands to enable the port 7.

2. Upgraded the Cisco IOS update to  12.2.50-SE3(ED) or later.

Contact a consultant

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