Product Overview
The Cisco GLC-ZX-SM is a 1000BASE-ZX SFP transceiver module designed for Gigabit Ethernet over long-distance single-mode fiber (SMF). Operating at a 1550 nm wavelength, it supports transmission distances up to 80 kilometers, making it ideal for carrier networks, metropolitan access, rural deployments, and long-haul enterprise backbones. This hot-swappable SFP module ensures stable and high-performance fiber connectivity with its LC duplex connector.
Product Details
| Specification | Description |
| Product Model | GLC-ZX-SM |
| Form Factor | SFP (Small Form-Factor Pluggable) |
| Interface Type | 1000BASE-ZX |
| Data Rate | 1 Gbps |
| Wavelength | 1550 nm |
| Fiber Type | Single-Mode Fiber (SMF) |
| Connector Type | LC duplex |
| Max Distance | Up to 80 km |
| Hot Swappable | Yes |
| DOM Support | No |
| Operating Temperature | 0°C to 70°C |
| Compliance | IEEE 802.3z, RoHS |
| Cisco Compatibility | Cisco Catalyst, ISR, ASR, and Nexus platforms |
Product Features
Provides 1 Gbps Gigabit Ethernet over single-mode fiber
Supports long-haul transmission up to 80 km at 1550 nm wavelength
LC duplex connector ensures standardized fiber termination
Ideal for service providers, metro networks, and enterprise WAN
Hot-swappable for flexible deployment and field maintenance
Compliant with IEEE 802.3z 1000BASE-ZX
Similar Models Comparison
| Model | Data Rate | Fiber Type | Max Distance | Wavelength | DOM | Connector |
| GLC-ZX-SM | 1 Gbps | SMF | 80 km | 1550 nm | No | LC |
| GLC-ZX-SMD | 1 Gbps | SMF | 80 km | 1550 nm | Yes | LC |
| GLC-EX-SM | 1 Gbps | SMF | 40 km | 1310 nm | Varies | LC |
| GLC-LH-SM | 1 Gbps | SMF/MMF | 10 km / 550 m | 1310 nm | No | LC |
| GLC-SX-MM D | 1 Gbps | MMF | 550 m | 850 nm | Yes | LC |
Latest Cisco 1G Long-Reach Fiber Modules
| Model | Max Distance | Wavelength | Fiber Type | Interface | Application |
| GLC-ZX-SM | 80 km | 1550 nm | SMF | 1000BASE-ZX | Carrier and enterprise backbones |
| GLC-ZX-SMD | 80 km | 1550 nm | SMF | 1000BASE-ZX | Same, with DOM support |
| GLC-EX-SM | 40 km | 1310 nm | SMF | 1000BASE-EX | Metro and rural enterprise WAN |
