Cisco GLC-LH-SMD: specifications
·2 min read·281 words
The GLC-LH-SMD is Cisco's standard 1G single-mode optical SFP module for links up to 10 km. Compatible with Catalyst 9300/9500, Nexus 9000, Meraki MS and ISR. It replaces the EoS GLC-LH-SM (previous part number). Complete data sheet.
Optical specifications
- Data rate: 1 Gbps (1000BASE-LX/LH)
- Fiber: 9/125 µm single-mode (OS1/OS2)
- Reach: 10 km (IEEE 802.3 LH)
- TX/RX wavelength: 1310 nm
- Connector: duplex LC
- TX power: -9 to -3 dBm
- RX sensitivity: -20 dBm
- Optical power budget: 11 dB
Compatibility
- Catalyst 9200/9300/9500/9600 (all SFP ports)
- Catalyst 3850/3560-X (legacy)
- Nexus 9300/9200 (in an SFP slot, no adapter required)
- Meraki MS350/MS410/MS450
- ISR 4000 series (SFP ports)
- ASR 900/1000 (SFP ports)
Pricing
- Brand-new genuine Cisco GLC-LH-SMD: €290 excluding VAT
- Genuine refurbished Cisco GLC-LH-SMD with warranty: €120 excluding VAT
- Certified OPTINOC alternative (100% compatible): €45 excluding VAT (84% savings)
Alternatives by distance
- GLC-SX-MMD: OM2/OM3 multimode, 550m-1km (multimode only) — €85 excluding VAT
- GLC-BX-D/GLC-BX-U: bidirectional, single-fiber, 10 km — €390 excluding VAT
- GLC-EX-SMD: single-mode, 40 km — €590 excluding VAT
- GLC-ZX-SMD: single-mode, 70 km (80 km with attenuator) — €890 excluding VAT
- GLC-T: 100m RJ45 copper (no fiber) — €145 excluding VAT
DOM (Digital Optical Monitoring)
The -D suffix (GLC-LH-SMD) indicates DOM support:
- Real-time monitoring: TX power, RX power, temperature, voltage and laser current
- CLI: show interfaces transceiver
- SNMP OID for Nagios/Zabbix/PRTG monitoring
- Configurable alarm thresholds
GLC-LH-SM vs GLC-LH-SMD compatibility
- GLC-LH-SM: previous part number, EoS (End-of-Sale) since 2017
- GLC-LH-SMD: current model, with DOM
- Functionally identical; the -D only adds monitoring
- Existing GLC-LH-SM SFPs will continue to operate, but without DOM
Order from OPTINOC
Brand-new genuine Cisco GLC-LH-SMD or certified OPTINOC equivalent with 100% compatibility (80%+ savings). EEPROM coding guaranteed with no 'Unsupported SFP' message. 24-hour delivery in France.