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SFP (Cisco GLC-SX-MM) unknown in cisco switch 2960s

khalid777
Level 1
Level 1

‎04-08-2015 08:46 AM - edited ‎03-07-2019 11:27 PM

I have cisco switch WS-C2960S-24TS-S with IOS 12.2(55)SE8  C2960S-UNIVERSALK9-M when I connect the SFP Cisco GLC-SX-MM to the interface the switch does not know it .

Switch#sh interfaces gig0/25 status

Port      Name               Status       Vlan       Duplex  Speed Type
Gi0/25                       err-disabled 1            auto   auto unknown

 

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9 Replies 9

Leo Laohoo
Hall of Fame
Hall of Fame

‎04-08-2015 08:52 AM

Please post the complete output to the command "sh interface status err".  

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khalid777
Level 1
Level 1
In response to Leo Laohoo

‎04-08-2015 09:17 AM

Thanks leo 

I  will try this command and I will confirm you .

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khalid777
Level 1
Level 1
In response to khalid777

‎04-12-2015 06:11 AM

This is the output of the commend 

Switch#show int status err-disabled

Port      Name               Status       Reason               Err-disabled Vlans
Gi0/25                       err-disabled gbic-invalid

 

 

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Madhukrishnan Gopinathan Nair
Level 7
Level 7
In response to khalid777

‎04-12-2015 08:54 AM

What happens, if you do a shut and no shut on these interface?

Thanks,

Madhu

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khalid777
Level 1
Level 1
In response to Madhukrishnan Gopinathan Nair

‎04-12-2015 12:00 PM

Switch(config)#int gigabitEthernet 0/25
Switch(config-if)#sho
Switch(config-if)#shu
Switch(config-if)#shutdown
Switch(config-if)#do sh
*Mar  1 00:08:10.481: %LINK-5-CHANGED: Interface GigabitEthernet0/25, changed state to administratively down ip int br
Interface              IP-Address      OK? Method Status                Protocol
Vlan1                  unassigned      YES unset  up                    up
FastEthernet0          unassigned      YES unset  down                  down
GigabitEthernet0/1     unassigned      YES unset  down                  down
GigabitEthernet0/2     unassigned      YES unset  down                  down
GigabitEthernet0/3     unassigned      YES unset  down                  down
GigabitEthernet0/4     unassigned      YES unset  down                  down
GigabitEthernet0/5     unassigned      YES unset  down                  down
GigabitEthernet0/6     unassigned      YES unset  down                  down
GigabitEthernet0/7     unassigned      YES unset  down                  down
GigabitEthernet0/8     unassigned      YES unset  down                  down
GigabitEthernet0/9     unassigned      YES unset  down                  down
GigabitEthernet0/10    unassigned      YES unset  down                  down
GigabitEthernet0/11    unassigned      YES unset  down                  down
GigabitEthernet0/12    unassigned      YES unset  down                  down
GigabitEthernet0/13    unassigned      YES unset  down                  down
GigabitEthernet0/14    unassigned      YES unset  down                  down
GigabitEthernet0/15    unassigned      YES unset  down                  down
GigabitEthernet0/16    unassigned      YES unset  down                  down
GigabitEthernet0/17    unassigned      YES unset  down                  down
GigabitEthernet0/18    unassigned      YES unset  down                  down
GigabitEthernet0/19    unassigned      YES unset  down                  down
GigabitEthernet0/20    unassigned      YES unset  down                  down
GigabitEthernet0/21    unassigned      YES unset  down                  down
GigabitEthernet0/22    unassigned      YES unset  down                  down
GigabitEthernet0/23    unassigned      YES unset  down                  down
GigabitEthernet0/24    unassigned      YES unset  up                    up
GigabitEthernet0/25    unassigned      YES unset  administratively down down
GigabitEthernet0/26    unassigned      YES unset  down                  down
Switch(config-if)#no shut
Switch(config-if)#
*Mar  1 00:08:30.326: %LINK-3-UPDOWN: Interface GigabitEthernet0/25, changed state to down
Switch(config-if)#

Switch#show ip int brief
Interface              IP-Address      OK? Method Status                Protocol
Vlan1                  unassigned      YES unset  up                    down
FastEthernet0          unassigned      YES unset  down                  down
GigabitEthernet0/1     unassigned      YES unset  down                  down
GigabitEthernet0/2     unassigned      YES unset  down                  down
GigabitEthernet0/3     unassigned      YES unset  down                  down
GigabitEthernet0/4     unassigned      YES unset  down                  down
GigabitEthernet0/5     unassigned      YES unset  down                  down
GigabitEthernet0/6     unassigned      YES unset  down                  down
GigabitEthernet0/7     unassigned      YES unset  down                  down
GigabitEthernet0/8     unassigned      YES unset  down                  down
GigabitEthernet0/9     unassigned      YES unset  down                  down
GigabitEthernet0/10    unassigned      YES unset  down                  down
GigabitEthernet0/11    unassigned      YES unset  down                  down
GigabitEthernet0/12    unassigned      YES unset  down                  down
GigabitEthernet0/13    unassigned      YES unset  down                  down
GigabitEthernet0/14    unassigned      YES unset  down                  down
GigabitEthernet0/15    unassigned      YES unset  down                  down
GigabitEthernet0/16    unassigned      YES unset  down                  down
GigabitEthernet0/17    unassigned      YES unset  down                  down
GigabitEthernet0/18    unassigned      YES unset  down                  down
GigabitEthernet0/19    unassigned      YES unset  down                  down
GigabitEthernet0/20    unassigned      YES unset  down                  down
GigabitEthernet0/21    unassigned      YES unset  down                  down
GigabitEthernet0/22    unassigned      YES unset  down                  down
GigabitEthernet0/23    unassigned      YES unset  down                  down
GigabitEthernet0/24    unassigned      YES unset  down                  down
GigabitEthernet0/25    unassigned      YES unset  down                  down
GigabitEthernet0/26    unassigned      YES unset  down                  down
Switch#

 


Mar  1 00:07:55.508: %GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi0/25 has bad crc
*Mar  1 00:07:55.508: %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi0/25, putting Gi0/25 in err-disable state
*Mar  1 00:08:24.003: %GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi0/25 has bad crc
*Mar  1 00:08:39.144: %GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi0/25 has bad crc

 

Mar  1 00:24:18.611: %GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi0/25 has bad crc
*Mar  1 00:24:18.611: %PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported transceiver found in Gi0/25

0 Helpful

Madhukrishnan Gopinathan Nair
Level 7
Level 7

‎04-08-2015 08:57 AM

Hi khalid,

 

Is it being recognized in another port?

It could be a bad SFP also. Also why is the port err-disabled? Did you check on that?

 

Thanks,

Madhu.

0 Helpful

khalid777
Level 1
Level 1
In response to Madhukrishnan Gopinathan Nair

‎04-08-2015 09:15 AM

Thanks  Madhu

I tried it in another port,with same Issue .

0 Helpful

Madhukrishnan Gopinathan Nair
Level 7
Level 7
In response to khalid777

‎04-08-2015 09:25 AM

Try check with another spare GLC-SX-MM ?

If that works get this one replaced.

 

Thanks,

Madhu

 

0 Helpful

khalid777
Level 1
Level 1
In response to Madhukrishnan Gopinathan Nair

‎04-12-2015 06:06 AM

I replaced with another cisco GLC-SX-MM with same issue .

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