Learn about the port types present in Nokia’s Colorless Wavelength Router (CWR), a key component in colorless optical networking solutions. Discover how the CWR enables flexible wavelength routing.
Table of Contents
Question
Which type of ports are present in the Colorless Wavelength Router (CWR)?
A. Colorless uni-directional ports only
B. Black and white ports
C. Colorless bi-directional ports
D. DeMux ports
Answer
C. Colorless bi-directional ports
Explanation
The Colorless Wavelength Router (CWR) from Nokia contains colorless bi-directional ports.
Colorless ports allow any wavelength or color to be routed to any port on the CWR. This provides flexibility in assigning and re-assigning wavelengths to different ports as needed.
Bi-directional ports can both transmit and receive traffic, enabling two-way communication over a single fiber. The CWR’s colorless bi-directional ports allow it to both multiplex and de-multiplex multiple wavelengths onto a single fiber in both directions.
The other options are incorrect:
A) The CWR has bi-directional ports, not only uni-directional
B) “Black and white ports” is not a term used for the CWR
D) DeMux (de-multiplexing) ports are not a property of the CWR itself
In summary, the Colorless Wavelength Router uses colorless bi-directional ports to provide flexible any-to-any wavelength routing and multiplexing/de-multiplexing capabilities. This allows for agile, software-defined optical networking.
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