port down

[vishalpatil86]

Hi,

I have a 2960 switch to which printer is connected

port configuration is -

#show run innt fa0/2

interface fastethernet 0/2

!

switchport access vlan 20

Problem is, after some time, that port goes down and i have to restart the switch.

But, when i connect the printer indirectly to the switch i.e. putting small d-link switch(8 port), it works just like normal

I tried everything hysically. Am i missing anything in switch configuration.

Please help

[John Blakley]

The port shuts down or is it err-disable? How often does it happen? The port looks pretty basic, and for a printer it shouldn't need to be configured special. The next time it happens, can you post:

sh int fa0/2

[Jan Hrnko]

Hi Vishal,

Can you also post:

show port-security interface fa0/2

Thank you.

Best regards,

Jan

[vishalpatil86]

sure....

[vishalpatil86]

hi,

I observed one more thing...

Same printer is attched to the switch to different port. That port is working fine,,,,,

please find attached port config for these two ports

[Leo Laohoo]

Same printer is attched to the switch to different port. That port is working fine

You most likely have a cable issue.  The best bet is to run a TDR, which the 2960 "kinda" support.

[vishalpatil86]

hi,

I think I got the problem; the port went to err-disabled mode

sw#sh int fa0/3
FastEthernet0/3 is down, line protocol is down (err-disabled)
  Hardware is Fast Ethernet, address is 0024.f98d.8d83 (bia 0024.f98d.8d83)
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Auto-duplex, Auto-speed, 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 20:38:36, 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
     21132 packets input, 1353478 bytes, 0 no buffer
     Received 303 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
     675919 packets output, 51816930 bytes, 0 underruns
     0 output errors, 0 collisions, 1 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

Now I dont understand that why it is in err disabled mode...

Please suggest..

[nkarpysh]

Can you check "show log" for the reason of  port being error-disabled.

Nik

[Leo Laohoo]

Now I dont understand that why it is in err disabled mode...

Kindly post the output to the command "sh interface f0/3 status err".