Let cisco switch use 3rd party SFPs

Cisco SFP 
Left side = transmit
Right side = Recieve
http://www.cisco.com/c/en/us/td/docs/interfaces_modules/transceiver_modules/installation/note/78_15160.html


Commands to allow using non Cisco SFPs
service unsupported-transceiver
no errdisable detect cause gbic-invalid


taken from:
http://www.firewall.cx/cisco-technical-knowledgebase/cisco-switches/866-cisco-switches-3rd-party-sfp.html

Check your sfp
sh int gigabitEthernet 0/3 status 
sh int gigabitEthernet 0/3 capabilities (check type)