2960G switch port not responding

[manoj.kumar0074]

Hi All,

I have 2960-G switch , last few days i am facing problem with it.Some ports are not responding .LED blinks but no packets are send or receive.

I tried a lot by restarting it and even I had restore default the switch but no luck.Pls find attached text file for config details............

[Anton Noskov]

Hi.

It`s  a  random ports or one group ports?

Did you had a problem   with power sapply ?

[rocco.scholz]

Hi,

what is the status of those ports - notconnected,errdisabled? Please post a "show interface status" output and also an "show interface  ge 0/x" from affected port.

[manoj.kumar0074]

Dear Rocco.scholz,

please find below mention output ....

show interfaces gigabitEthernet 0/12
GigabitEthernet0/12 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet, address is 0023.abe2.440c (bia 0023.abe2.440c)
  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 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  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, 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
CH-ADMIN_CABIN-ASC-01#
CH-ADMIN_CABIN-ASC-01#show interfaces gigabitEthernet 0/13
GigabitEthernet0/13 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet, address is 0023.abe2.440d (bia 0023.abe2.440d)
  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 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported
  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, 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
CH-ADMIN_CABIN-ASC-01#show interfaces status

Port      Name               Status       Vlan       Duplex  Speed Type
Gi0/1                        connected    244        a-full   a-10 10/100/1000BaseTX
Gi0/2                        connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/3                        connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/4                        notconnect   244          auto   auto 10/100/1000BaseTX                                                                             seTX
Gi0/5                        connected    244        a-full a-1000 10/100/1000BaseTX                                                                             seTX
Gi0/6                        connected    244        a-full   a-10 10/100/1000BaseTX                                                                             seTX
Gi0/7                        connected    244        a-full a-1000 10/100/1000BaseTX                                                                             seTX
Gi0/8                        connected    244        a-full a-1000 10/100/1000BaseTX                                                                             seTX
Gi0/9                        notconnect   244          full   auto 10/100/1000BaseTX                                                                             seTX
Gi0/10                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/11                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/12                       notconnect   244          auto   auto 10/100/1000BaseTX                                                                             seTX
Gi0/13                       notconnect   244          auto   auto 10/100/1000BaseTX                                                                             seTX
Gi0/14                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX

Port      Name               Status       Vlan       Duplex  Speed Type
Gi0/15                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/16                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/17                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/18                       notconnect   244          auto   auto 10/100/1000BaseTX                                                                             seTX
Gi0/19                       notconnect   244          auto   auto 10/100/1000BaseTX                                                                             seTX
Gi0/20                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/21                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/22                       connected    244        a-full   a-10 10/100/1000BaseTX                                                                             seTX
Gi0/23                       connected    244        a-full  a-100 10/100/1000BaseTX                                                                             seTX
Gi0/24                       connected    trunk      a-full  a-100 10/100/1000BaseTX                                                                             seTX

[Leo Laohoo]

Are these ports coming from a client with NIC Teaming turned on?

[rocco.scholz]

Hi, as leolaohoo wrote please tell us what kind of device is connected to these ports. From your show int status I can see that all counters are zero so I think these ports were never up. Have you tried to connect directly with a notebook to one of these ports?

[manoj.kumar0074]

hi rocco.scholz,

Our end users were connected through these ports but due the problem i had remove them and restart the switch.

Now the problem is that the ports were randomly not responding and within 7 days total 5 nos ports were useless.

Even I had connected my laptop on these ports but it shows not connected.

[rocco.scholz]

have you already tried a online diagnostic test?

[Leo Laohoo]

Post the config for the ports.

Maybe BPDU Guard is enabled or port security or something could be sending the ports into error-disable.

[bojan15584]

Try   show post  command

If there is something wrong with ports there should be some errors...

[cadet alain]

Hi Leo,

Maybe BPDU Guard is enabled or port security or something could be sending the ports into error-disable

they would be  in errdisabled state but here they are in notconnect state.

But giving us a show run interface output  would maybe tell us a little bit more.

Regards.