Issue with Cisco Switch 2960G

Answered Question
Mar 3rd, 2010

Hi!


I have just purchased four cisco WS-C2960G-24TC-L switches with 4 SFP GLC-LH-SM= modules. All of the switches are having the c2960-lanbasek9-mz.122-44.SE6.bin as IOS.


The issue I am having is that when I plug the SFP modules, they appear to be not recognised by the switch.


When I am doing a Show version, the number of ports recognised are 24.


Please see attached the sh version output.


Will am IOS upgrade solve the issue?


Thanks and regards,


Alvin

Correct Answer by Ganesh Hariharan about 6 years 12 months ago

Hi!


I have just purchased four cisco WS-C2960G-24TC-L switches with 4 SFP GLC-LH-SM= modules. All of the switches are having the c2960-lanbasek9-mz.122-44.SE6.bin as IOS.


The issue I am having is that when I plug the SFP modules, they appear to be not recognised by the switch.


When I am doing a Show version, the number of ports recognised are 24.


Please see attached the sh version output.


Will am IOS upgrade solve the issue?


Thanks and regards,


Alvin

Hi Alvin,


WS-C2960G-24TC-L - will support 20 Ethernet 10/100/1000 ports and 4 dual-purpose uplinks (each dual-purpose uplink port has one 10/100/1000 Ethernet port and 1 SFP-based Gigabit Ethernet port, 1 port active), 1 RU fixed-configuration and  LAN Base Image installed.


so at a time you can have a single port can be used in one of the four ports,check out the below link for further information.


http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/product_data_sheet0900aecd80322c0c.html


Remember to rate the helpful post !!


Ganesh.H

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KARUPPUCHAMY MA... Wed, 03/03/2010 - 01:39

Hi,


In WS-C2960G-24TC-L, 20 Ethernet 10/100/1000 ports and 4 dual-purpose uplinks ,each dual-purpose uplink port has one 10/100/1000 Ethernet port and 1 SFP-based Gigabit Ethernet port, at a time only 1 port active(either it may be SFP or Ethernet).


so  the switch will display only 24 port active in sh version


Will am IOS upgrade solve the issue?   -- No need. Because it is the default behaviour of the switch


Regards

Karuppu

Giuseppe Larosa Wed, 03/03/2010 - 01:41

Hello Alvin,

documentation says that it is supported since


12.2(25)FX


http://www.cisco.com/en/US//docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html


you may need to set the media-type to sfp in interface configuration mode to say to the switch to use the SFP


media-type {auto-select | rj45 | sfp}


see

http://www.cisco.com/en/US//docs/switches/lan/catalyst2960/software/release/12.2_44_se/configuration/guide/swint.html#wp1831207



Hope to help

Giuseppe

Correct Answer
Ganesh Hariharan Wed, 03/03/2010 - 08:00

Hi!


I have just purchased four cisco WS-C2960G-24TC-L switches with 4 SFP GLC-LH-SM= modules. All of the switches are having the c2960-lanbasek9-mz.122-44.SE6.bin as IOS.


The issue I am having is that when I plug the SFP modules, they appear to be not recognised by the switch.


When I am doing a Show version, the number of ports recognised are 24.


Please see attached the sh version output.


Will am IOS upgrade solve the issue?


Thanks and regards,


Alvin

Hi Alvin,


WS-C2960G-24TC-L - will support 20 Ethernet 10/100/1000 ports and 4 dual-purpose uplinks (each dual-purpose uplink port has one 10/100/1000 Ethernet port and 1 SFP-based Gigabit Ethernet port, 1 port active), 1 RU fixed-configuration and  LAN Base Image installed.


so at a time you can have a single port can be used in one of the four ports,check out the below link for further information.


http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/product_data_sheet0900aecd80322c0c.html


Remember to rate the helpful post !!


Ganesh.H

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