Q
What is a Cisco Compatible SFP DWDM module?
A
A Cisco Compatible SFP DWDM (Dense Wavelength Division Multiplexing) module is a third-party optical transceiver engineered to match Cisco’s form factor and interface. It multiplexes multiple wavelengths over a single fiber for high-capacity, long-haul transmission.
Q
How does a Cisco Compatible SFP DWDM module work?
A
A Cisco Compatible SFP DWDM module operates by assigning each data channel to a specific ITU-T wavelength, combining them on one fiber via a multiplexer and then de-multiplexing at the remote end. This maximizes bandwidth and minimizes infrastructure costs.
Q
What ITU-T wavelengths do Cisco Compatible SFP DWDM modules support?
A
Cisco Compatible SFP DWDM modules support ITU-T grid channels from C-Band 191 to 196 THz (wavelengths 1528.77 nm to 1563.86 nm). Channel spacing is typically 50 GHz, ensuring standardized interoperability.
Q
What is the maximum reach of a Cisco Compatible SFP DWDM module?
A
Depending on channel power and fiber loss, Cisco Compatible SFP DWDM modules can reliably transmit up to 80 km without amplification and beyond 120 km with inline amplifiers or dispersion compensation.
Q
How do I install a Cisco Compatible SFP DWDM module?
A
To install, power down the switch or router, insert the SFP DWDM into the SFP port, connect the DWDM‐compatible fiber patch panel with the correct wavelength-labeled port, then power on and verify link status.
Q
Are Cisco Compatible SFP DWDM modules truly Cisco-certified?
A
While not manufactured by Cisco, Cisco Compatible SFP DWDM modules undergo rigorous testing for hardware, software and firmware interoperability. They meet Cisco’s MSA specifications and are validated for full feature compatibility.
Q
How do I choose the right Cisco Compatible SFP DWDM module?
A
Select based on your required wavelength, distance, fiber type, and channel plan. Confirm compatibility with your Cisco platform’s SFP+ or SFP28 slot, link budget and amplification strategy for optimal performance.
Q
Can Cisco Compatible SFP DWDM modules interoperate with Cisco OEM modules?
A
Yes. Cisco Compatible SFP DWDM modules adhere to industry MSAs and ITU-T standards, ensuring seamless interoperability with genuine Cisco DWDM modules in the same optical line system.
Q
What is the difference between DWDM and CWDM SFP modules?
A
DWDM (Dense) uses tightly spaced 50 GHz or 100 GHz channels for high-capacity, long-haul links. CWDM (Coarse) uses wider 20 nm spacing, supports fewer channels over shorter distances and is typically unamplified.
Q
Do Cisco Compatible SFP DWDM modules support hot-swapping?
A
Yes. Cisco Compatible SFP DWDM modules support hot-swapping. You can insert or remove them without powering down the host device, minimizing network downtime.
Q
What is the typical optical power budget of Cisco Compatible SFP DWDM modules?
A
Typical power budgets range from 0 to +5 dBm transmit power and –8 to –3 dBm receiver sensitivity. Actual link budget depends on fiber attenuation, connector loss and system margins.
Q
How do I troubleshoot a Cisco Compatible SFP DWDM link?
A
Verify correct wavelength and fiber port mapping, inspect fiber cleanliness, check transmitter/receiver power levels via device CLI, and ensure proper shelf temperature. Replace or re-seat modules if errors persist.
Q
Are Cisco Compatible SFP DWDM modules ITU-T compliant?
A
Yes. Cisco Compatible SFP DWDM modules comply with ITU-T G.694.1 wavelength grid standards and SFF-8472 digital diagnostics monitoring specifications for consistent performance and monitoring.
Q
Can I use Cisco Compatible SFP DWDM modules in non-Cisco switches?
A
Often, yes. Many non-Cisco platforms support MSA-compliant SFP DWDM modules. Always verify your switch or router supplier’s compatibility list before deployment to ensure proper operation.
Q
How do I verify compatibility of a Cisco Compatible SFP DWDM module?
A
Check the module’s datasheet for supported platforms, consult your Cisco device’s hardware installation guide, and validate the module’s vendor-issued compatibility matrix against your system firmware.
Q
What warranty covers Cisco Compatible SFP DWDM modules?
A
Most Cisco Compatible SFP DWDM modules include a lifetime or limited-lifetime warranty against manufacturing defects. Warranty terms vary by vendor and typically cover repair or replacement at no extra cost.