GLC-SX-MMD: Cisco 1000BASE-SX SFP Optical Transceiver
Also listed as: 10-2625-01, GLC-SX-MMD=
The Cisco GLC-SX-MMD is an extended temperature 1000BASE-SX SFP optical transceiver supporting 1 Gigabit Ethernet over multimode fibre up to 550 meters with DOM.
Specifications
| Part number | GLC-SX-MMD |
|---|---|
| Brand | Cisco |
| Type | Transceivers |
| Other numbers | 10-2625-01, GLC-SX-MMD= |
| Status | current |
| Form factor | SFP |
| Speed | 1GbE |
| Wavelength nm | 850 |
| Connector | LC duplex |
| Cable type | Multimode Fibre |
| Max distance m | 550 |
About the GLC-SX-MMD
The Cisco GLC-SX-MMD transceiver provides 1000BASE-SX optical connectivity across short-reach multimode fibre backbones. Operating at 850 nanometers, it transmits Gigabit Ethernet up to 550 meters on 50-micron multimode cabling. It features Digital Optical Monitoring support, enabling network diagnostics and preventative maintenance alerts through switch operating systems.
Compatibility
Compatible with Cisco Catalyst 9000, 3850, 3650, 2960, and Cisco Nexus 9000, 3000 switches. It fits into standard SFP ports and dual-rate SFP+ ports operating in 1Gbps mode, supporting campus backbone, riser, and inter-floor wiring closet optical connections.
How to identify a genuine unit
Housed in a metal SFP shell with a black optical release latch bail indicating multimode 850nm optical operation. The label shows Cisco branding, part number GLC-SX-MMD, manufacturing part number 10-2625-01, and international laser safety compliance markers.
Buying used
Inspect the optical bore with a fiber scope for dust contamination and ensure the latch mechanism secures firmly in the switch cage. Test in an active switch port to verify DOM optical readings and validate authentic Cisco ID recognition in system logs.
Fits these models
- Cisco Catalyst 1000
- Cisco Catalyst 2960-CX
- Cisco Catalyst 2960-L
- Cisco Catalyst 2960-Plus
- Cisco Catalyst 2960-X
- Cisco Catalyst 2960-XR
- Cisco Catalyst 3560-CX
- Cisco Catalyst 3650
- Cisco Catalyst 3850
- Cisco Catalyst 4503-E
- Cisco Catalyst 4506-E
- Cisco Catalyst 4507R+E
- Cisco Catalyst 4510R+E
- Cisco Catalyst 6503-E
- Cisco Catalyst 6504-E
- Cisco Catalyst 6506-E
- Cisco Catalyst 6509-E
- Cisco Catalyst 6513-E
- Cisco Catalyst 6807-XL
- Cisco Catalyst 9200
- Cisco Catalyst 9200L
- Cisco Catalyst 9300
- Cisco Catalyst 9300L
- Cisco Catalyst 9300X
- Cisco Catalyst 9404R
- Cisco Catalyst 9407R
- Cisco Catalyst 9410R
- Cisco Catalyst 9606R
- Cisco Nexus 2232PP
- Cisco Nexus 2232TM-E
- Cisco Nexus 2248TP-E
- Cisco Nexus 2248TP
- Cisco Nexus 2348TQ
- Cisco Nexus 2348UPQ
- Cisco Nexus 3064-X
- Cisco Nexus 3172PQ
- Cisco Nexus 3524-X
- Cisco Nexus 3548-X
- Cisco Nexus 5548UP
- Cisco Nexus 5596UP
- Cisco Nexus 5672UP
- Cisco Nexus 6001P
- Cisco Nexus 9372PX
- Cisco Nexus 9396PX
Check compatibility with Cisco
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Cisco has tested with the Cisco GLC-SX-MMD.
- Compatibility Cisco UCS Hardware Compatibility List
- Compatibility Cisco Optics-to-Device Compatibility Matrix
- Support Cisco Support and Downloads
FAQ
What is the maximum reach of GLC-SX-MMD over OM2 fibre?
It supports up to 550 meters over 50-micron OM2 and OM3 multimode fibre, and 220 meters over 62.5-micron OM1 fibre.
Does GLC-SX-MMD support Digital Optical Monitoring?
Yes, it includes DOM telemetry allowing real-time monitoring of optical power and temperature.
Buying or selling GLC-SX-MMD?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Cisco Gigabit Ethernet SFP Modules Data Sheet, checked 2026-10-27