Is this eBay Cisco SFP-10G-SR genuine? Checking markings and serial format

Question

The poster bought a Cisco SFP-10G-SR on eBay (markings suggesting 2007 manufacture) and, warned about counterfeit Cisco optics with longevity and safety risks, asked how to tell whether it was genuine before deploying it. Hardware involved: Cisco SFP-10G-SR. Reported symptoms/messages: authenticity doubt; used optics from marketplace.

Transceivers: Cisco SFP-10G-SR
Form factor: SFP+

Symptoms / messages:

authenticity doubt
used optics from marketplace

wavesmith · Accepted Answer

Serial number format and label markings looked correct with no red flags; the module worked when installed.

fiberwolf · Answer

Generic FS.com-type optics (with warranty) are a cheaper alternative to grey-market OEM parts; buy from reeputable refurbishers and consult Cisco's counterfeit identifiaction guide.

Comments 2