×

Warning message

  • Cisco Support Forums is in Read Only mode while the site is being migrated.
  • Cisco Support Forums is in Read Only mode while the site is being migrated.

GigabitEthernet0/3 is down, line protocol is down (err-disabled)

Unanswered Question
Apr 8th, 2008
User Badges:

We had a 3560 go down today. It had an err-disable on its GigabitEthernet port.


This is a first. Do you guys have any clue as to why it would do this?


The 6513 FastEthernet stated that it was up/up.


I'm scratching my head for now...


Thanks!

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
mohammedmahmoud Tue, 04/08/2008 - 10:36
User Badges:
  • Green, 3000 points or more

Hi,


Please post the output of "show interface status err-disabled", it should have the reason, example:


Switch#show interfaces status err-disabled


Port Name Status Reason

Fa0/13 err-disabled bpduguard



BR,

Mohammed Mahmoud.

djgizmo250 Tue, 04/08/2008 - 10:41
User Badges:

I already put the switch online by doing a shut/no shut on the port.


Here's the output of the show interface g0/3.


GigabitEthernet0/3 is down, line protocol is down (err-disabled)


Hardware is Gigabit Ethernet, address is 0013.1933.ef9b (bia 0013.1933.ef9b)


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)


Auto-duplex, Auto-speed


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


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


Last input 00:59:19, output 00:59:19, 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


178072502 packets input, 3914189599 bytes, 0 no buffer


Received 129108645 broadcasts (0 multicast)


0 runts, 0 giants, 0 throttles


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


0 watchdog, 77596408 multicast, 0 pause input


0 input packets with dribble condition detected


35696681 packets output, 393726150 bytes, 0 underruns


mohammedmahmoud Tue, 04/08/2008 - 10:53
User Badges:
  • Green, 3000 points or more

Hi,


Without the output of "show interfaces status err-disabled" we can't say what was the reason of the err-disable, please issue it if this reoccurs.


BR,

Mohammed Mahmoud.

djgizmo250 Tue, 04/08/2008 - 11:07
User Badges:

Will do. Thanks for the input.


I was in a panic mode and wanted to get the department back online ASAP.


If it occurs again, I'll be sure to issue the "show interfaces status err-disabled".


Thanks again!

mohammedmahmoud Tue, 04/08/2008 - 11:21
User Badges:
  • Green, 3000 points or more

Hi,


You are very welcomed, and good luck.


BR,

Mohammed Mahmoud.

Actions

This Discussion