Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

2960G switch port not responding

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............

10 REPLIES
New Member

Re: 2960G switch port not responding

Hi.

It`s  a  random ports or one group ports?

Did you had a problem   with power sapply ?

New Member

Re: 2960G switch port not responding

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.

New Member

Re: 2960G switch port not responding

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

Hall of Fame Super Gold

Re: 2960G switch port not responding

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

New Member

Re: 2960G switch port not responding

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?

New Member

Re: 2960G switch port not responding

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.

New Member

Re: 2960G switch port not responding

have you already tried a online diagnostic test?

Hall of Fame Super Gold

Re: 2960G switch port not responding

Post the config for the ports.

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

New Member

Re: 2960G switch port not responding

Try   show post  command

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

Purple

Re: 2960G switch port not responding

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.

Don't forget to rate helpful posts.
1326
Views
0
Helpful
10
Replies