Cisco GLC-ZX-SMD  Compatible 1000BASE-ZX SFP 1550nm 80km DDM Duplex LC/UPC SMF Optical Transceiver Module

• Cisco Catalyst Switching: 2960-X/XR, 3650, 3850, 9200, 9300, 9400, and 9500 series.

• Cisco Nexus Data Center Switches: Nexus 3000, 5000, 7000, and 9000 series.

• Cisco Aggregation Services Routers (ASR): ASR 900 and ASR 1000 series.

• Cisco Industrial Ethernet (IE): IE-3000, IE-4000, and IE-5000 series (Commercial temp).

• Cisco ISR Routers: 4000 series (4321, 4331, 4431, 4451).

• Regional Data Center Interconnect (DCI): Linking remote data centers across metropolitan areas using low-attenuation 1550nm fiber.

• ISP Edge Aggregation: Providing high-stability 1.25G uplinks for regional service providers and municipal broadband projects.

• Critical Infrastructure Monitoring: Connecting remote utility sensors or transportation hubs to a central control room over extended distances.

FAQ for Cisco GLC-ZX-SMD  Compatible SFP Transceiver:

Q1: What is the difference between GLC-ZX-SM and GLC-ZX-SMD? A: The "D" in GLC-ZX-SMD stands for Digital Optical Monitoring (DOM). It allows you to check light levels and diagnostics via the switch CLI. While the 80km distance is the same, the "D" version is the modern standard required for most new Cisco hardware.

Q2: Will this module work in an SFP+ (10G) port on a Catalyst 9300? A: Yes. Most Cisco 10G SFP+ ports are backward compatible. The port will typically auto-negotiate to 1Gbps speed. If it does not, you can manually set the speed to 1000 in the interface configuration.

Q3: Is an optical attenuator required for the GLC-ZX-SMD? A: YES. This is a high-power laser. If your fiber link is shorter than 20km, you MUST use a 10dB-15dB LC optical attenuator. Connecting this module directly over short distances can permanently damage the optical receiver.

Q4: How do I view the DOM/DDM information in Cisco IOS? A: You can view real-time diagnostics using the command: show interfaces transceiver properties or show interfaces transceiver.

Q5: Does HYTOPTODEVICE guarantee no "Unsupported Transceiver" errors? A: Absolutely. Our modules are programmed with authentic Cisco EEPROM signatures. They are recognized by Cisco IOS/IOS-XE as GLC-ZX-SMD, ensuring error-free operation without needing special override commands.

Quality Assurance：Your Trusted Optical Transceiver Source

HYTOPTODEVICE is a vertically integrated manufacturer of high-performance optical transceivers. By controlling core materials at the source, we ensure every SFP module meets the highest standards of reliability and customization.

• Vertical Integration: In-house core material production ensures a stable, self-sufficient supply chain for all optical modules.

• Total Traceability: End-to-end oversight from raw components to final transceiver assembly guarantees 100% controllability.

• Bespoke Solutions: Expert-led R&D provides customized SFP transceiver designs tailored to your specific technical needs.

• 24-Hour Response: Our technical team guarantees a primary response to any inquiry or quality concern within 24 hours.

Carrier-Grade Quality. Factory-Direct Control. Rapid Response.

Quality Certification & Compliance：

At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, our processes ensure global compliance and reliability.

We adhere to rigorous standards for our SFP modules and network solutions:

• ISO 9001: Certified quality management and production consistency.

• CE,UL & FCC: Fully compliant for seamless Global Market Access.

• RoHS: Committed to environmental responsibility and hazardous material control.

• Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.

Certified Quality. Global Standards. Guaranteed Performance.

Rigorous Industrial Product Testing：

   

100% 3rd Party Compatible：

Partial Test Demonstration: