Product Overview
The Cisco GLC-ZX-SMD is a 1000BASE-ZX SFP transceiver module designed for ultra-long-distance Gigabit Ethernet transmission over single-mode fiber (SMF). Operating at a 1550 nm wavelength, it supports fiber links up to 80 kilometers, making it ideal for metropolitan area networks (MANs), carrier-grade infrastructures, and large enterprise backbones. Equipped with Digital Optical Monitoring (DOM), the GLC-ZX-SMD offers real-time monitoring of optical signal strength and link conditions.
Product Details
| Specification | Description |
| Product Model | GLC-ZX-SMD |
| Form Factor | SFP (Small Form-Factor Pluggable) |
| Interface Type | 1000BASE-ZX |
| Data Rate | 1 Gbps |
| Fiber Type | Single-Mode Fiber (SMF) |
| Connector Type | LC duplex |
| Wavelength | 1550 nm |
| Max Distance | Up to 80 km |
| Digital Optical Monitoring | Yes (DOM supported) |
| Hot Swappable | Yes |
| Operating Temperature | 0°C to 70°C |
| Compliance | IEEE 802.3z, RoHS |
| Cisco Compatibility | Compatible with Cisco Catalyst, Nexus, ISR, ASR |
Product Features
Supports 1 Gbps Ethernet over single-mode fiber up to 80 km
Operates at 1550 nm, optimized for long-haul fiber transmission
Built-in DOM provides real-time diagnostics for proactive management
Uses LC duplex connector for standard fiber infrastructure
Hot-swappable SFP simplifies upgrades and replacements
Ideal for long-range enterprise links, metro aggregation, and service provider networks
Similar Models Comparison
| Model | Data Rate | Interface | Fiber Type | Max Distance | Wavelength | DOM | Connector |
| GLC-ZX-SMD | 1 Gbps | 1000BASE-ZX | SMF | 80 km | 1550 nm | Yes | LC |
| GLC-EX-SMD | 1 Gbps | 1000BASE-EX | SMF | 40 km | 1310 nm | Yes | LC |
| GLC-LH-SMD | 1 Gbps | 1000BASE-LX/LH | SMF | 10 km | 1310 nm | Yes | LC |
| GLC-SX-MM D | 1 Gbps | 1000BASE-SX | MMF | 550 m | 850 nm | Yes | LC |
Latest Cisco 1G Long-Haul SFP Modules
| Model | Fiber Type | Distance | Wavelength | DOM | Use Case |
| GLC-ZX-SMD | SMF | 80 km | 1550 nm | Yes | Carrier-grade long-haul links |
| GLC-EX-SMD | SMF | 40 km | 1310 nm | Yes | Enterprise & metro backbones |
| GLC-LH-SMD | SMF | 10 km | 1310 nm | Yes | Campus and core networks |
