ME-3600X-TS interface issue

[rubberheart]

I know it is a very very old devices 

we see a very very weird thing in the switch , we try to connect a device to one the of the interface 

On the endpoint device side, I can see the interface is up, no issues, but the switch side shows down

we admin-down the interface in switch and we can see dendpoint interface go down 

we re-enable that switchport again , even we still see "notconnect" , but in endpoint side , it say up up 

we asked DC OPS team test the cable , all good , we tried straight , X-over,, default interfaces , etc ,, even changed another switchport ,, same issue ,, we even changed another endpoint , same result 

what could be this issue ? any thought? 

many thanks in advance  

[liviu.gheorghe]

Hello @rubberheart ,

can you share the output of the following commands for the interface in question:

show run interface gigabit 0/x

show interface gigabit 0/x

show interface gigabit 0/x switchport

show interface gigabit 0/x trunk

show interface gigabit 0/x status

show interface gigabit 0/x status err-disabled

[rubberheart]

First, thanks, LG

The interface is defaulted, there is no configuration, and I just "no shut" it
interface still show down, not in erridisable mode as well

GigabitEthernet0/1 is down, line protocol is down (notconnect)

  Hardware is Gigabit Ethernet, and the address is 001f.6c8d.1234 (bia 001f.6c8d.1234)

  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)

  Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX

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

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

  Last input never, output never, 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

     0 packets input, 0 bytes, 0 no buffer

     Received 0 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

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 0 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

[liviu.gheorghe]

I understand, but still would like to see the show run interface Gi0/1 command and the rest of the commands that I mentioned. From the output of the show interface Gi0/1 and what you described it looks like a cable issue. This is the reason I would like to see those outputs.