United States
Q
What is Dell Networking Compatible QSFP28?
A
Dell Networking Compatible QSFP28 is a hot-pluggable 100 GbE optical transceiver module fully tested for seamless operation with Dell Networking switches and routers.
Q
Which data rates does QSFP28 support?
A
The Dell Networking Compatible QSFP28 supports 100 Gbps aggregate bandwidth over four 25 Gbps lanes, enabling high-speed data transfer in modern data centers.
Q
Which cable types are compatible with QSFP28?
A
Dell Networking Compatible QSFP28 modules support single-mode fiber, multi-mode fiber, active optical cables (AOC), and passive direct attach copper (DAC) cables for flexible deployment.
Q
How far can Dell QSFP28 modules transmit over fiber?
A
Depending on the module type, Dell Networking Compatible QSFP28 transceivers deliver link distances from 100 meters on OM4 multimode fiber up to 10 kilometers on single-mode fiber.
Q
Is QSFP28 backward compatible with QSFP+ ports?
A
Yes, many Dell Networking switches support QSFP28 modules in QSFP+ ports at 40 GbE operation, provided the switch firmware is up to date.
Q
How do I install a QSFP28 transceiver in a Dell switch?
A
To install, power off the port if required, insert the QSFP28 module until it clicks, and verify link status through the switch’s web GUI or CLI.
Q
How do I configure a Dell Networking QSFP28 port?
A
Use the Dell Networking CLI with the command ‘interface qsfp-port, speed 100g, no shutdown’ or configure through the web interface under Port Settings.
Q
Can I mix Dell and third-party QSFP28 modules?
A
Dell Networking is validated only with Dell compatible QSFP28 modules; mixing with unsupported third-party optics may result in disabled ports or suboptimal performance.
Q
What are typical QSFP28 use cases?
A
Dell Networking Compatible QSFP28 modules are ideal for spine-leaf architectures, TOR aggregation, high-density servers, and HPC cluster interconnects.
Q
How do I test a QSFP28 module after installation?
A
Run optical diagnostics via the switch CLI (‘show interface transceiver diagnostics’) to verify Tx/Rx power, temperature, and voltage within manufacturer specifications.
Q
What is the difference between active and passive QSFP28 DACs?
A
Passive DACs transmit copper signals without additional electronics for short distances (≤3 m), while active DACs include signal conditioning chips for longer reach (up to 7 m).
Q
What is the power consumption of Dell QSFP28 modules?
A
Typical power consumption for Dell Networking Compatible QSFP28 optical modules ranges from 2.5 W to 4.5 W, depending on cable type and link distance.
Q
How can I troubleshoot link failures on QSFP28 ports?
A
Verify fiber polarity, clean end-faces with appropriate tools, confirm port configuration, and check diagnostic counters for Tx/Rx errors in the CLI.
Q
How do I choose the right QSFP28 transceiver for my network?
A
Select based on desired data rate (100 GbE), link distance, fiber type, and compatibility with your Dell switch model and firmware version.
Q
What warranty covers Dell Networking Compatible QSFP28 modules?
A
Dell provides a one-year limited hardware warranty on Networking compatible transceivers, with options to extend coverage through Dell ProSupport.
