Switch port showing Solid Amber port status not connected

[mahesh18]

Hi  Everyone,

2 Switch ports  on switch  WS-C3560-48PS  are showing as Solid Amber.

Even if i unplug the cable they stay as Amber.Nothing is connected on the other end.

I check the port status it shows not conencted.

There are no errors on the  port.

sh spanning-tree int fa0/20

no spanning tree info available for FastEthernet0/20

Can sometime tell if ports are gone bad or not?

Regards

Mahesh

[Peter Paluch · Accepted solution]

Hi Mahesh,

Often, err-disabled ports behave like this. Check the output of the following command:

show int status err-disable

If these ports are indeed found err-disabled, you have to solve the reason why they were err-disabled, and then you can reactivate them byt shutting them down, waiting 5-10 seconds, and no shut-ting them again.

Best regards,

Peter

[mahesh18]

Hi Peter,

Thanks for quick  reply it is not err-disabled right now.

It was errdisabled earlier due to link flap.

So we put the new cable from switch to PC.

Currently cable from switch port does not connect to PC.

Even if i unplug the cable from switch port it stays Amber.

Regards

MAhesh

[Peter Paluch · Accepted solution]

Mahesh,

Shut the port down using the shutdown command. The amber light should go off. Leave it shut down for at least 5 seconds and then reactivate it using no shutdown.

Let me know please!

Best regards,

Peter

[mahesh18]

Hi Peter,

Just did   that.

Left for 10 secs.Still  Solid  Amber.

Regards

MAhesh

[Peter Paluch]

Hi Mahesh,

I apologize for a totally stupid question - but are you absolutely sure that the switch and port you are configuring is exactly the switch and port that keeps staying amber? No offense please. I recall spending half an hour on a phone desperately trying to help a friend troubleshoot an apparently dead port until he found out he mistook its number with another port.

If this doubt can be eliminated, can you please post the output of the following commands?

show run int fa0/20

show int fa0/20

show int fa0/20 switchport

show int fa0/20 status

Also please check the show logging if there is any message about this interface being deactivated.

Best regards,

Peter

[mahesh18]

Hi Peter,

Yes i am sure because i did the physical inspection on switch.

sh run int fa0/20
Building configuration...

Current configuration : 140 bytes
!
interface FastEthernet0/20
switchport access vlan 101
switchport mode access
no logging event link-status
spanning-tree portfast
end

sh int fa0/20
FastEthernet0/20 is down, line protocol is down (notconnect)
  Hardware is Fast Ethernet, address is 0018.1801.8593 (bia 0018.1801.8593)
  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 1w0d, 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
     171547 packets input, 83959003 bytes, 0 no buffer
     Received 12914 broadcasts (237 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 237 multicast, 0 pause input
     0 input packets with dribble condition detected
     1003418 packets output, 1106997715 bytes, 0 underruns
     0 output errors, 0 collisions, 4 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

sh int fa0/20 switchport
Name: fa0/20
Switchport: Enabled
Administrative Mode: static access
Operational Mode: down
Administrative Trunking Encapsulation: negotiate
Negotiation of Trunking: Off
Access Mode VLAN: 101 (VLAN0101)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none

sh int fa0/20 status

Port      Name               Status       Vlan       Duplex  Speed Type
fa0/20                       notconnect   101          auto   auto 10/100BaseTX

Regards

Mahesh

[Peter Paluch · Accepted solution]

Hello Mahesh,

Very strange indeed. Currently, the port reports as being down/down. Is it possible to connect it to a live device and see if the port becomes something different than down/down?

Best regards,

Peter

[mahesh18]

Hi Peter,

We did test plug the laptop in and did ipconfig/release and renew and  port is back to normal  green.

Then we unplug the laptop and port shows green now.

Pretty strange behaviour .

Thanks for help.

Regards

Mahesh

[Peter Paluch]

Hello Mahesh,

Thank you for keeping me informed! I should try this in a lab some time Thank you for the generous ratings!

Best regards,

Peter

[Leo Laohoo]

Post the output to the command "sh post".  What IOS version are you using?

[mahesh18]

Hi Leo,

IOS is c3560-ipbasek9-mz.122-55.SE7

sh post
Stored system POST messages:

Switch 1
---------

POST: CPU MIC register Tests : Begin
POST: CPU MIC register Tests : End, Status Passed

POST: PortASIC Memory Tests : Begin
POST: PortASIC Memory Tests : End, Status Passed

POST: CPU MIC interface Loopback Tests : Begin
POST: CPU MIC interface Loopback Tests : End, Status Passed

POST: PortASIC RingLoopback Tests : Begin
POST: PortASIC RingLoopback Tests : End, Status Passed

POST: Inline Power Controller Tests : Begin
POST: Inline Power Controller Tests : End, Status Passed

POST: PortASIC CAM Subsystem Tests : Begin
POST: PortASIC CAM Subsystem Tests : End, Status Passed

POST: PortASIC Port Loopback Tests : Begin
POST: PortASIC Port Loopback Tests : End, Status Passed

Does these messages are when last time switch was reloaded? 

Regards

Mahesh

[Leo Laohoo]

Does these messages are when last time switch was reloaded?

Yes.  That's correct.

Have you tried to reload the switch?

[mahesh18]

Hi Leo,

no i did not try to reload the switch.

Regards

mahesh

[Chidojohnkingsley92]

Solved in this YouTube channel https://youtu.be/FpeZEswrH-s