- Multi mode – 200m maximum for 10GB and 500m for 1GB
- Single mode – from 500m to 50Km
Cisco SFP are different part numbers depending on the fiber mode
- LC – Lucent Connector
- SC – Subscriber Connector
Don’t mix fiber optic with fibre-channel. Fibre-channel is a transport protocol, initially designed to go over fiber, but that now it’s common to use it over copper.
Fibre-Channel uses US form of fibre
Fiber optic uses UK form of Fiber
OTDR – Optical Time-Domain Reflectometer – Characterize the optical fiber. It enjects optical pulses to test it from the same end.