Fiber Optic Problem in Catalyst 2960G

atparreno · ‎10-21-2009

Hello,

Im having an error GBIC_Security_Crypt-4-VN_DATA_CRC_error: GBIC in Port gigabitethernet0/24 has bad crc when I insert the TEG-MGBSX Mini-GBIC Multi Mode module. Heres the info of my switch

Cisco IOS Software, C2960 Software (C2960-LANBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)

ROM: Bootstrap program is C2960 boot loader

BOOTLDR: C2960 Boot Loader (C2960-HBOOT-M) Version 12.2(25r)SEE1, RELEASE SOFTWARE (fc1)

Echo-Backbone uptime is 2 hours, 23 minutes System returned to ROM by power-on System image file is "flash:c2960 lanbase-mz.122-35.SE5/c2960-lanbase-mz.122-35.SE5.bin"

cisco WS-C2960G-24TC-L (PowerPC405) processor (revision E0) with 61440K/4088K bytes of memory.

Switch Ports Model SW Version SW Image

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

* 1 24 WS-C2960G-24TC-L 12.(35)SE5 C2960-LANBASE-M

Thanks

glen.grant · ‎10-21-2009

Are you using a cisco gbic , cisco are very fussy about using non cisco gbics and may not work if it's not.

iyde · ‎10-21-2009

You _could_ try the hidden configuration command "service unsupported-transceiver". It will disable the checking of the SFP but also comes with a legal warning that you might be out of support from Cisco, if they determine that the problem you are reporting could be caused by using an unsupported transceiver.

HTH

atparreno · ‎10-21-2009

Thanks for the reply, can you give me a product of supported transceiver in catalyst 2960G?

Thanks again.

jbrenesj · ‎10-21-2009

Hi, see:

Cisco Gigabit Ethernet Transceiver Modules Compatibility Matrix

Table 4

http://www.cisco.com/en/US/docs/interfaces_modules/transceiver_modules/compatibility/matrix/OL_6981.html#wp128965

Note: these are all Cisco branded Transceivers. Other vendors are not meant to be supported even when I know they work sometimes but not supported by Cisco