United States
Q
What is a Cisco compatible SFP CWDM module?
A
A Cisco compatible SFP CWDM is a coarse wavelength-division multiplexing transceiver designed to handle multiple data channels over a single fiber and fully interoperable with Cisco hardware under MSA standards.
Q
How do Cisco compatible CWDM SFP transceivers work?
A
They generate and detect distinct optical wavelengths spaced at 20 nm intervals, allowing multiple signals to traverse one single-mode fiber without interference.
Q
Are Cisco compatible CWDM SFP modules fully compatible with Cisco switches and routers?
A
Yes, when sourced from a certified vendor and MSA-compliant, these modules plug into Cisco SFP slots and operate without custom firmware or disabling vendor checks.
Q
What maximum distances can Cisco compatible CWDM SFP modules support?
A
On single-mode fiber, Cisco compatible CWDM SFPs reliably span up to 80 km, depending on link loss and optical budget.
Q
Which wavelengths are offered in Cisco compatible CWDM SFP modules?
A
They cover 18 ITU-T-standard CWDM channels from 1271 nm to 1611 nm in 20 nm steps to maximize fiber utilization.
Q
Can I mix Cisco compatible CWDM SFP modules from different manufacturers?
A
Yes, provided each module adheres to the SFP MSA and Cisco compatibility requirements, you can intermix brands without performance loss.
Q
What is the difference between CWDM SFP and DWDM SFP modules?
A
CWDM uses wider 20 nm channel spacing for cost-effective short-to-medium links, while DWDM uses 0.8 nm spacing for high-density, long-haul applications.
Q
How do I install a Cisco compatible CWDM SFP into my network device?
A
Power down is not required; align and insert the SFP into the port until it clicks, then verify link status via the device CLI or LED indicators.
Q
Do Cisco compatible CWDM SFPs require manual configuration after installation?
A
No, they are plug-and-play; only standard interface commands such as speed or duplex settings may be needed in your Cisco IOS.
Q
How can I troubleshoot a CWDM SFP that fails to establish a link?
A
Check fiber polarity and cleanliness, confirm matching wavelengths at both ends, inspect port LEDs, and use ‘show interface transceiver’ for diagnostics.
Q
What optical power budgets do Cisco compatible CWDM SFP modules offer?
A
Typical transmit power ranges from –5 dBm to +2 dBm with receive sensitivity down to –24 dBm, supporting link losses up to 19 dB.
Q
Are Cisco compatible CWDM SFP modules hot-swappable?
A
Yes, these modules support hot-swapping, allowing insertion or removal without powering down the host device.
Q
Which industry standards do Cisco compatible CWDM SFP transceivers comply with?
A
They meet SFP MSA, IEEE 802.3, Telcordia GR-1209/1221, RoHS, and IEC 60825 optical safety standards.
Q
How do I verify the wavelength of an installed CWDM SFP module?
A
Use the ‘show interface transceiver details’ command in Cisco IOS or a handheld fiber wavelength analyzer for precise measurement.
Q
What environmental conditions are supported by Cisco compatible CWDM SFP modules?
A
They operate reliably from 0 °C to 70 °C (standard) or –40 °C to 85 °C (industrial) with up to 95% non-condensing humidity.
Q
Do Cisco compatible CWDM SFP modules include a warranty?
A
Yes, they typically carry a one-year limited warranty with options for extended coverage and advanced replacement services.
Q
How do Cisco compatible CWDM SFP modules impact network upgrade costs?
A
They reduce CAPEX by multiplexing multiple channels over existing fiber and lower OPEX through interoperability and extended module lifecycles.
