Re: Error lights signal on switch 2960

Trung Minh · ‎02-22-2013

Hi all,

I have a switch connect to 2 backbone(BB).

Now i saw the lights when connect to BB1 is not light but i do not know which command will show the root cause or troubleshooting.

I want to know its caused by hardware, physical port or whatever.

Any on can sharing the experiences how to show and troubleshooting this issue?

I also checked the connection and port 1g is fine.

Show tech-support is alread here.

Any help is appreciated.

Leo Laohoo · ‎02-22-2013

Please post the output to the following commands:

1. sh interface G0/1

2. sh post;

3. sh version

4. sh interface status error

jawad-mukhtar · ‎02-22-2013

Also Post output of following command

show spanning-tree

Jawad

Trung Minh · ‎02-24-2013

Hi all,

Thank you all guide,

Command as your requirement as below:

KVP_R4_OA2#sho ver

Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(44)SE6, RELEASE SOFTWARE (fc1)

Compiled Mon 09-Mar-09 18:10 by gereddy

Image text-base: 0x00003000, data-base: 0x01100000

ROM: Bootstrap program is C2960 boot loader

BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M) Version 12.2(44)SE6, RELEASE SOFTWARE (fc1)

KVP_R4_OA2 uptime is 8 minutes

System returned to ROM by power-on

System restarted at 13:56:28 ICT Mon Feb 25 2013

System image file is "flash:c2960-lanbasek9-mz.122-44.SE6/c2960-lanbasek9-mz.122-44.SE6.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

cisco WS-C2960-24TC-L (PowerPC405) processor (revision J0) with 61440K/4088K bytes of memory.

Processor board ID FOC1409Y0BD

Last reset from power-on

2 Virtual Ethernet interfaces

24 FastEthernet interfaces

2 Gigabit Ethernet interfaces

The password-recovery mechanism is enabled.

64K bytes of flash-simulated non-volatile configuration memory.

Base ethernet MAC Address : 08:1F:F3:19:61:80

Motherboard assembly number : 73-11437-07

Power supply part number : 341-0097-02

Motherboard serial number : FOC14092Q57

Power supply serial number : AZS140501U6

Model revision number : J0

Motherboard revision number : B0

Model number : WS-C2960-24TC-L

System serial number : FOC1409Y0BD

Top Assembly Part Number : 800-29826-03

Top Assembly Revision Number : E0

Version ID : V06

CLEI Code Number : COMFT00BRA

Hardware Board Revision Number : 0x01

Switch Ports Model SW Version SW Image

------ ----- ----- ---------- ----------

* 1 26 WS-C2960-24TC-L 12.2(44)SE6 C2960-LANBASEK9-M

Configuration register is 0xF

KVP_R4_OA2#sh interface G0/1

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

Hardware is Gigabit Ethernet, address is 081f.f319.6199 (bia 081f.f319.6199)

Description: ### To KVP_BB1_G2/7 ###

MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive not set

Auto-duplex, Auto-speed, link type is auto, media type is unknown

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

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

Last input 00:00:15, 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 6000 bits/sec, 9 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

3572 packets input, 314615 bytes, 0 no buffer

Received 3494 broadcasts (1787 multicasts)

0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 1787 multicast, 0 pause input

0 input packets with dribble condition detected

0 packets output, 0 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

KVP_R4_OA2#sho 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: 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

KVP_R4_OA2#sh interface status error

^

% Invalid input detected at '^' marker.

KVP_R4_OA2#sh interface status err

KVP_R4_OA2#sh interface status err-disabled

Can not using "sh interface status error"

KVP_R4_OA2#sho spanning-tree

VLAN0001

Spanning tree enabled protocol ieee

Root ID Priority 49153

Address 081f.f319.6180

This bridge is the root

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 49153 (priority 49152 sys-id-ext 1)

Address 081f.f319.6180

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300

Uplinkfast enabled

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi0/2 Desg FWD 3004 128.26 P2p

VLAN0110

Spanning tree enabled protocol ieee

Root ID Priority 4206

Address 5475.d0c3.e100

Cost 3004

Port 26 (GigabitEthernet0/2)

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 49262 (priority 49152 sys-id-ext 110)

Address 081f.f319.6180

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300

Uplinkfast enabled

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi0/2 Root FWD 3004 128.26 P2p

VLAN0123

Spanning tree enabled protocol ieee

Root ID Priority 4219

Address 5475.d0c3.e100

Cost 3004

Port 26 (GigabitEthernet0/2)

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 49275 (priority 49152 sys-id-ext 123)

Address 081f.f319.6180

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300

Uplinkfast enabled

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi0/2 Root FWD 3004 128.26 P2p

VLAN0124

Spanning tree enabled protocol ieee

Root ID Priority 4220

Address 5475.d0c3.e100

Cost 3004

Port 26 (GigabitEthernet0/2)

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 49276 (priority 49152 sys-id-ext 124)

Address 081f.f319.6180

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 300

Uplinkfast enabled

Interface Role Sts Cost Prio.Nbr Type

------------------- ---- --- --------- -------- --------------------------------

Gi0/2 Root FWD 3004 128.26 P2p

Any help is appreciated,

jawad-mukhtar · ‎02-24-2013


GigabitEthernet0/1 is down, line protocol is down (notconnect) 
!--- 1) A cable is not properly connected or not connected at all to this port.
!--- 2) The connected cable is faulty.
!--- 3) Other end of the cable is not connected to an active port or device.

Jawad

Leo Laohoo · ‎02-25-2013

Ok. Thanks for the output. Can you please post the output to the following additional commands:

1. Command: test cable tdr interface G0/1;

2. Wait for about 5 to 7 seconds;

3. Command: sh cable tdr interface G0/1; and

4. Post the output to #3.

Trung Minh · ‎02-25-2013

Hi leolaohoo,

Here is my result after test cable:

KVP_R4_OA2#sho cable-diagnostics tdr int gi0/1

TDR test last run on: February 26 08:02:32

Interface Speed Local pair Pair length Remote pair Pair status

--------- ----- ---------- ------------------ ----------- --------------------

Gi0/1 auto Pair A 0 +/- 2 meters N/A Open

Pair B 0 +/- 2 meters N/A Open

Pair C 0 +/- 2 meters N/A Open

Pair D 0 +/- 2 meters N/A Open

@Jawad Mukhtar: I already checked signal, cable fiber are fine.

Best regards,

Leo Laohoo · ‎02-25-2013

Oopps. That's a fibre optic. The command is for copper.

Swap the two fibre runs.

Trung Minh · ‎02-25-2013

I already doing something to check related this issue, but not successful.

Do you think it caused by hardware?

Do i need to recompile this switch?

Any help is appreciate,

Leo Laohoo · ‎02-25-2013

If you've swapped the G0/1 into G0/2 and vice versa and you still can't get G0/1 to light up, then there's a chance the SFP could be faulty.

Change the SFP.

Trung Minh · ‎02-25-2013

As my picture already attache here(in the first post).

The lights in port Gi0/2 is light then i take the 2 fibers to pluging into port Gi0/1 ---> not light(fail).

Eventhought, i take the switch into another rack ---> same result(not light). I don't think it is SFP.

Although, i still saw the red light in the port gi0/1.

Do you think it's caused by hardware? and how to detected the cause it by port hardware or not?

Regards,