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GLC-ZX-SMD
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Cisco 1000BASE-ZX SFP Optical Transceiver Module, 70km, SMF,...
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Name:
GLC-ZX-SMD
- Description:
- Cisco 1000BASE-ZX SFP Optical Transceiver Module, 70km, SMF, Dual LC, DOM, 1550nm
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 691852459773
- Condition:
- Warranty:
- 3
- List Price:
$4,713.00
- Price:
$196.0095.8% off
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1
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GLC-ZX-SMD Overview
GLC-ZX-SMD uses the SFP form factor for hot-swappable placement in Gigabit Ethernet SFP ports on Cisco switches and routers. Line operation provides 1 Gbps Ethernet signaling through 1000BASE-ZX interfaces for extended-distance optical uplinks across routed access networks. Optical media is single-mode fiber with G.652 characteristics for long-span campus, industrial, and service-provider links. Dual LC/PC connectors provide separate transmit and receive paths through PC or UPC patch cords in the optical interface. Wavelength operation uses 1550 nm optics across the 1500 nm to 1580 nm transmit-and-receive window for ZX signaling. Maximum reach is 70 km on OS1/OS2 over G.652 single-mode cabling networks. GLC-ZX-SMD carries the Extended operating temperature class for broader Cisco deployment environments. Digital optical monitoring reports output power, input power, temperature, laser bias current, and transceiver supply voltage through DOM capability.
A DFB transmitter launches stable long-wavelength optical output for Cisco 1000BASE-ZX Ethernet operation across compatible host ports and uplinks. PIN receiver circuitry converts incoming low-level optical input into electrical signaling for the host interface and diagnostic path. TX power delivers 0 dBm to 5 dBm average launch power across Cisco ZX optical operating conditions. RX sensitivity reaches -23 dBm at the receive minimum input level for the extended-distance optical budget. Receiver overload tolerates -3 dBm at the maximum receive input level before optical front-end saturation occurs. With 8b/10b encoding, 1000BASE-X framing carries Ethernet payloads across the serial optical lane and host interface. IEEE 802.3z and IEEE 802.3ah establish Gigabit Ethernet optical operation and compliance references for Cisco SFP modules. At 3.3V, the host electrical interface supplies the module through the standard low-voltage rail. Power consumption stays at 1 W for GLC-ZX-SMD during Cisco 1000BASE-ZX optical operation across supported host field installations.
Cisco Catalyst 2960-X, Catalyst 9300, Catalyst IE3300, Catalyst IE9300, Nexus 3000, and Nexus 5600 platforms match deployment. Deployment environments span enterprise campus, industrial Ethernet, data center aggregation, service provider edge, and long-distance uplink refreshes. Required cable grade is OS2 for 70 km installations over G.652 single-mode plant. Shorter links require inline attenuation to protect the receiver from high optical input power. Extended ZX spans fit routed access edges, aggregation rings, building interconnects, and remote switch uplinks. Buy GLC-ZX-SMD from ORM Systems in new and certified refurbished condition for Cisco ZX deployments. Certified refurbished stock undergoes optical power validation, serial-number checks, cleaning, and DOM readout verification before sale. ORM Systems maintains replacement stock for supported Cisco families, planned refreshes, emergency swaps, advance spare-pool purchasing, and maintenance windows coverage. Request a quote from ORM Systems for GLC-ZX-SMD volume orders, enterprise buyers, bulk quotation support, and procurement planning teams support.
GLC-ZX-SMD price is $196.00, a 95.8% saving from the Cisco list price of $4,713.00. GLC-ZX-SMD is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for GLC-ZX-SMD for additional pricing. Browse the full Sfp series or explore all Cisco products.
GLC-ZX-SMD Specifications
- Product Type
- Optical Transceiver
- Brand
- Cisco
- Series
- N/A
- Compatible OEM Part
- N/A
- Use Case
- Data Center / Enterprise Campus / Metro / Service Provider / Industrial
- Form Factor
- SFP
- Data Rate
- 1 Gbps
- Protocol
- Ethernet
- Fiber Type
- Single-Mode (SMF)
- Connector Type
- LC Duplex
- Wavelength TX
- 1500 nm to 1580 nm
- Wavelength RX
- 1500 nm to 1580 nm
- Reach
- 70 km (OS2/G.652)
- Cable Standard
- OS2
- Transmitter Type
- DFB
- Receiver Type
- PIN
- TX Power Min
- 0 dBm
- TX Power Max
- 5 dBm
- RX Sensitivity
- -23 dBm
- RX Power Max
- -3 dBm
- Encoding
- 8b/10b
- Supported Standards
- IEEE 802.3z / IEEE 802.3ah / SFF-8472
- DDM/DOM Support
- Yes
- Power Consumption
- 1 W
- Supply Voltage
- 3.3V
- Operating Temperature
- Extended (-5°C to 85°C)
- Compatible Platforms
- Cisco Catalyst 2960-X / Catalyst 9300 / Catalyst IE3300 / Catalyst IE9300 / Nexus 3000 / Nexus 5600
- Certifications
- N/A
- Height
- 8.5 mm
- Width
- 13.4 mm
- Depth
- 56.5 mm
- Weight
- 0.075 kg
GLC-ZX-SMD Use Case
Long-Reach Access Uplink
The Cisco GLC-ZX-SMD operates as a 1 GbE long-reach uplink from an access or aggregation switch to a remote distribution point over single-mode fiber. Its 1000BASE-ZX optical profile reaches approximately 70 km and provides a 21 dB optical link budget, with DOM support for monitoring transceiver conditions. In this role, GLC-ZX-SMD extends Gigabit Ethernet across a long campus or metro fiber path. The network gains a monitored 1G optical span where LX/LH distance no longer covers the route reliably today.
Remote Cabinet Return
The GLC-ZX-SMD sits at a remote cabinet or aggregation shelf where a single Gigabit Ethernet link must traverse long single-mode fiber back to a central switch. Its 1550 nm 1000BASE-ZX design reaches approximately 70 km, and DOM reporting supports operational checks on optical power and module status. This placement fits low-bandwidth remote aggregation where 10G optics exceed the traffic requirement. The remote site gains a documented 1G return path with reach and monitoring matched to long-distance fiber daily operations planning.
Management Plane Fiber Path
The Cisco 1000BASE-ZX SFP Optical Transceiver GLC-ZX-SMD operates in a backup or management-plane fiber path that spans beyond standard LX/LH reach. Its single-mode ZX interface provides approximately 70 km distance and a 21 dB optical budget, while the dual LC SFP format fits standard Gigabit switch ports. The module keeps out-of-band or secondary aggregation traffic on a monitored optical channel. The design gains a long-reach 1G path that remains independent from higher-speed production uplinks during planned core maintenance windows cycles.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| GLC-ZX-SMD |  SFP-OC12-LR2 |  GLC-FE-100LX |  SFP-OC3-LR2 | |
|---|---|---|---|---|
| Product Type | Optical Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP | SFP | SFP | SFP |
| Data Rate | 1 Gbps | OC-12 | 100 Mb/s | N/A |
| Connector Type | LC Duplex | LC | LC | LC |
| Wavelength | 1310 nm | 1310 nm | 1310 nm | |
| Transmission Distance | Long-Range | Long-Range | Long-Range | |
| Fiber Type | Single-Mode (SMF) | Single-mode | Single-mode | Single-mode |
| Max Distance | 20 km | 10 km | 40 km | |
| Supported Protocols | SONET | Ethernet | SONET | |
| Network Interface | Fiber | Fiber | Fiber | |
| Power Consumption | 1 W | 1.0W | 0.7W | 1.8W |
| Operating Temperature | Extended (-5°C to 85°C) | 0 to 70°C | 0 to 70°C | -40 to 85°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | |
| Input Voltage | 3.3V | 3.3V | 3.3V | |
| Compatibility | Cisco, Juniper, Huawei, Arista | Cisco | Cisco, Juniper, Huawei, Arista | |
| Product Name | SFP-OC12-LR2 | GLC-FE-100LX | SFP-OC3-LR2 | |
| Height | 8.5 mm | 0.65 inches | N/A | 0.65 inches |
| Width | 13.4 mm | 0.91 inches | N/A | 0.55 inches |
| Depth | 56.5 mm | 0.75 inches | N/A | 1.50 inches |
| Weight | 0.075 kg | 0.06 lbs | N/A | 0.2 lbs |
Reviews & Ratings
K
Kiran Abbas
4
DOM readings were accurate.
F
Franco Bianchi
5
Excellent stability over distance.
I
Imran Qazi
4
High quality optics.
M
Monica Ellis
5
Very reliable.
Questions & Answers
What is GLC-ZX-SMD?
GLC-ZX-SMD is a Cisco 1000BASE-ZX SFP optical transceiver for long-distance Gigabit Ethernet over single-mode fiber. It uses a 1550 nm optical interface, dual LC connectors, and digital optical monitoring. Cisco lists approximately 70 km reach on standard single-mode fiber, with actual span depending on fiber quality, splice count, connector loss, and link budget.
What does the Cisco GLC-ZX-SMD model number mean?
GLC-ZX-SMD identifies a Cisco Gigabit Ethernet SFP module for 1000BASE-ZX extended-distance optical links. GLC refers to Cisco's Gigabit SFP family, ZX identifies long-reach 1550 nm single-mode fiber operation, SM indicates single-mode fiber, and D indicates digital optical monitoring. It is built for 1G fiber links, not 10G SFP+ ports.
Is GLC-ZX-SMD an optical transceiver or a cable?
GLC-ZX-SMD is an optical transceiver module, not a fixed cable assembly. It plugs into a compatible Cisco SFP port and connects to separate single-mode fiber patch leads. The module uses dual LC connectors, so buyers should use duplex LC single-mode cabling with PC or UPC polish and avoid APC patch cords.
Where does GLC-ZX-SMD sit in the Cisco SFP lineup?
GLC-ZX-SMD sits in Cisco's Gigabit Ethernet SFP family as the 1000BASE-ZX extended-distance option with DOM. It provides longer reach than GLC-LH-SMD and GLC-EX-SMD, while staying in the 1G SFP form factor. Related Cisco alternatives include GLC-LH-SMD, GLC-EX-SMD, GLC-ZX-SM-RGD, GLC-BX40-D-I, and GLC-BX80-D-I.
What form factor does GLC-ZX-SMD use?
GLC-ZX-SMD uses the Small Form-Factor Pluggable, or SFP, form factor for Gigabit Ethernet ports. Cisco lists SFP module dimensions as 8.5 mm high, 13.4 mm wide, and 56.5 mm deep, with typical weight of 75 g or less. The hot-swappable design allows replacement in compatible Cisco SFP slots without powering down the host platform.
What data rate does GLC-ZX-SMD support?
GLC-ZX-SMD supports 1 Gigabit Ethernet operation through a 1000BASE-ZX optical interface. It is intended for Gigabit Ethernet SFP ports on compatible Cisco switches, routers, and appliances. It should not be ordered for 10G SFP+ links, 25G SFP28 links, or multimode fiber deployments where a short-reach 1000BASE-SX optic is required.
What wavelength does GLC-ZX-SMD use?
GLC-ZX-SMD uses a 1550 nm class optical interface for long-distance 1000BASE-ZX links. Cisco's optical specification lists the transmit and receive wavelength range for 1000BASE-ZX as 1500 to 1580 nm. This wavelength is intended for single-mode fiber, not multimode fiber, and should be paired with another compatible 1000BASE-ZX optical interface.
What reach does GLC-ZX-SMD support?
GLC-ZX-SMD supports approximately 70 km on standard single-mode fiber, depending on link loss. Cisco states that 1000BASE-ZX provides a 21 dB optical link budget, and the exact distance depends on fiber quality, connectors, and splice count. Some premium or dispersion-shifted single-mode fiber routes may support longer spans after link engineering.
What connector type does GLC-ZX-SMD use?
GLC-ZX-SMD uses dual LC/PC connectors for transmit and receive fiber strands. Cisco notes that PC or UPC patch cords are supported, while APC patch cords are not supported. Buyers should use duplex LC single-mode patch leads, verify polarity, clean connectors before insertion, and check the receiving port level after installation.
Does GLC-ZX-SMD support digital optical monitoring?
GLC-ZX-SMD supports digital optical monitoring, which lets compatible Cisco platforms report transceiver temperature, supply voltage, laser bias current, transmit optical power, and receive optical power. DOM is especially useful on 70 km links because engineers can check received light levels, attenuation, and troubleshooting data without removing the module from the SFP port.
What is GLC-ZX-SMD used for?
GLC-ZX-SMD is used for long-distance 1G Ethernet links over single-mode fiber. Common applications include campus backbones, interbuilding links, service provider handoffs, utility fiber routes, CCTV backhaul, remote site aggregation, and router-to-switch connections. It is selected when 10 km LX/LH or 40 km EX optics do not provide enough reach.
What environment size fits GLC-ZX-SMD?
GLC-ZX-SMD fits enterprise, education, healthcare, government, utility, and service provider networks that need 1G Ethernet across long single-mode fiber spans. It is useful for large campuses, distributed estates, remote buildings, and metro access circuits. Buyers should verify the optical budget, fiber loss, connector count, and host platform support before selecting ZX optics.
What workloads suit GLC-ZX-SMD?
GLC-ZX-SMD suits standard Gigabit Ethernet traffic over long fiber routes, including branch uplinks, management networks, surveillance aggregation, campus distribution, SCADA backhaul, service provider Ethernet, and remote access switching. It is not intended for 10G aggregation, multimode fiber, or short unmanaged patching without optical attenuation where receiver overload could occur.
Can GLC-ZX-SMD work on short single-mode fiber links?
GLC-ZX-SMD can work on shorter single-mode fiber links only when receive power stays within the supported optical range. Cisco states that a 10 dB inline optical attenuator should be inserted at each receiving port whenever fiber span loss is less than 8 dB. This prevents receiver overload and helps maintain stable operation.
Which Cisco platforms are compatible with GLC-ZX-SMD?
GLC-ZX-SMD is supported across many Cisco platforms with compatible Gigabit Ethernet SFP ports, subject to Cisco's transceiver compatibility matrix. Cisco lists broad families including Catalyst switches, Industrial Ethernet switches, MDS 9000, ME platforms, CRS routers, RF Gateway, NAM appliances, and Nexus 2000, 3000, 4000, 5000, 7000, 9000, 9300, and 9500 Series platforms.
Does GLC-ZX-SMD work with Cisco Catalyst switches?
GLC-ZX-SMD can work with supported Cisco Catalyst switches that provide Gigabit Ethernet SFP ports and list the module as compatible. Common uses include long campus uplinks, distribution links, and interbuilding fiber paths. Buyers should verify the exact Catalyst model, network module, IOS or IOS XE release, and optical budget before ordering.
Does GLC-ZX-SMD work with Cisco routers and service provider platforms?
GLC-ZX-SMD can work with supported Cisco routers, ME platforms, and compatible service provider access devices that accept Gigabit Ethernet SFP optics. Use cases include provider handoffs, remote site backhaul, metro Ethernet access, and routed fiber links. The exact router, line card, software release, and transceiver support matrix should be checked before purchase.
What standards and optical rules apply to GLC-ZX-SMD?
GLC-ZX-SMD uses Cisco 1000BASE-ZX optical operation over single-mode fiber and supports DOM reporting. Cisco lists +5 to 0 dBm transmit power, -3 to -23 dBm receive power, 21 dB maximum channel insertion loss, and a 1500 to 1580 nm transmit and receive wavelength range. Both receiver power and insertion loss limits must be met.
How does GLC-ZX-SMD compare with GLC-LH-SMD?
GLC-ZX-SMD is a 1550 nm 1000BASE-ZX optic for approximately 70 km single-mode links. GLC-LH-SMD is a 1310 nm 1000BASE-LX/LH optic for 10 km single-mode links and 550 m multimode links. Buyers choose GLC-ZX-SMD for long single-mode routes and GLC-LH-SMD for shorter campus or building fiber connections.
How does GLC-ZX-SMD compare with GLC-EX-SMD?
GLC-ZX-SMD supports approximately 70 km over single-mode fiber with a 21 dB optical link budget. GLC-EX-SMD supports up to 40 km over single-mode fiber. Both provide DOM, but GLC-ZX-SMD is selected for longer fiber routes, while GLC-EX-SMD is usually enough for medium-distance metro, campus, or utility links.
How does GLC-ZX-SMD compare with GLC-ZX-SM-RGD?
GLC-ZX-SMD is the extended-temperature 1000BASE-ZX optic with DOM, while GLC-ZX-SM-RGD is the rugged industrial-temperature version. Both target long single-mode fiber links using 1550 nm ZX optics. GLC-ZX-SMD suits enterprise and controlled environments, while GLC-ZX-SM-RGD is better for industrial, outdoor cabinet, utility, and harsh temperature deployments.
How does GLC-ZX-SMD compare with GLC-BX80-D-I?
GLC-ZX-SMD uses two fiber strands with dual LC connectors for approximately 70 km 1000BASE-ZX links. GLC-BX80-D-I is an industrial bidirectional optic for single-fiber 80 km applications and must pair with the matching upstream module. GLC-ZX-SMD fits duplex fiber routes, while GLC-BX80-D-I fits single-strand fiber conservation designs.
Is GLC-ZX-SMD available new from ORM Systems?
GLC-ZX-SMD can be requested from ORM Systems in new condition, subject to Cisco channel, distributor stock, and regional availability. Cisco's current Gigabit Ethernet SFP data sheet lists GLC-ZX-SMD in ordering information as 1000BASE-ZX extended distance with DOM. Buyers should confirm quantity, packaging, compatibility, warranty, and delivery date before ordering.
Is GLC-ZX-SMD available refurbished from ORM Systems?
GLC-ZX-SMD can be sourced in certified refurbished condition when tested inventory is available. Refurbished long-reach optics are useful for spare stock, urgent replacements, and cost-sensitive projects where Cisco original modules are preferred. ORM Systems can confirm connector condition, Cisco identification, DOM operation, optical testing, warranty terms, and dispatch timing before shipment.
How much does GLC-ZX-SMD cost?
GLC-ZX-SMD pricing depends on condition, quantity, Cisco original status, stock source, warranty cover, and delivery destination. ZX optics usually cost more than SX, LX/LH, or EX modules because they support longer single-mode reach and higher optical budget. ORM Systems can quote single modules, matched pairs, project quantities, or spare-stock bundles.
Is GLC-ZX-SMD end of life?
GLC-ZX-SMD is listed in Cisco's current Gigabit Ethernet SFP data sheet ordering information as a 1000BASE-ZX extended-distance module with DOM. No current Cisco end-of-sale notice for GLC-ZX-SMD was identified in the checked Cisco sources. Buyers should still ask ORM Systems to verify lifecycle status before large orders or long-term spare planning.
What lead time should buyers expect for GLC-ZX-SMD?
GLC-ZX-SMD lead time depends on new stock, refurbished stock, quantity, testing requirements, and shipping destination. Long-reach optics may require additional sourcing or matched inventory checks for project quantities. ORM Systems can confirm availability, reserve stock, advise whether refurbished supply is practical, and provide expected dispatch timing before the purchase order is placed.
Are bulk discounts available for GLC-ZX-SMD?
Bulk pricing for GLC-ZX-SMD may be available when buyers need multiple long-reach 1G optics for campus, utility, service provider, or multi-site networks. ORM Systems can quote volume options across new and certified refurbished stock. Buyers should provide quantity, target platforms, required condition, delivery schedule, and whether matched pairs are needed.
What warranty applies to GLC-ZX-SMD from ORM Systems?
GLC-ZX-SMD warranty terms from ORM Systems should be confirmed in the quotation because coverage can vary by new, refurbished, or special-order supply. Cisco lists a standard five-year warranty for its Gigabit Ethernet SFP modules and expedited replacement through eligible Cisco SMARTnet service. ORM Systems can state reseller warranty terms before dispatch.
How is refurbished GLC-ZX-SMD stock tested before dispatch?
Refurbished GLC-ZX-SMD stock should be tested for Cisco identification, DOM visibility, stable 1G link operation, clean LC connectors, physical latch condition, transmit power, receive power behavior, and host acceptance. Long-reach ZX optics should also be checked with suitable attenuation on short test links to avoid receiver overload during validation.
What certifications and compliance standards apply to GLC-ZX-SMD?
GLC-ZX-SMD belongs to Cisco's Gigabit Ethernet SFP module family and supports 1000BASE-ZX optical operation over single-mode fiber. Cisco lists PC or UPC connector support, SFP hot-swap operation, DOM capability, and extended operating temperature for the SKU. Buyers needing formal compliance evidence should request current Cisco laser safety, EMC, RoHS, and country-specific declarations.
How is GLC-ZX-SMD installed?
GLC-ZX-SMD installs by inserting the module into a compatible Cisco Gigabit SFP port, connecting duplex LC single-mode fiber, and verifying link status and DOM readings. Engineers should clean connectors, check fiber loss, confirm the far-end optic, verify polarity, and add a 10 dB inline attenuator if span loss is less than 8 dB.
Does GLC-ZX-SMD require software or licensing?
GLC-ZX-SMD does not require a separate optic license, but the host Cisco platform must support the module, port type, and software release. Some Cisco switches, routers, and line cards enforce transceiver compatibility. Buyers should check Cisco's compatibility matrix for the exact chassis, module, IOS, IOS XE, NX-OS, or platform release before ordering.
What cables and accessories are needed with GLC-ZX-SMD?
GLC-ZX-SMD requires duplex LC single-mode fiber patch leads and a suitable single-mode fiber route. Cisco supports PC or UPC patch cords and does not support APC patch cords. Installers may also need 10 dB inline optical attenuators for low-loss spans, fiber cleaning tools, inspection scopes, labels, and dust caps for reliable deployment.
Where can buyers purchase GLC-ZX-SMD in the UK?
Buyers can purchase GLC-ZX-SMD in the UK through ORM Systems by requesting a quote for the Cisco 1000BASE-ZX SFP optical transceiver module. ORM Systems can support new and certified refurbished sourcing, compatibility checks, warranty confirmation, attenuation guidance, and delivery planning for long-distance Cisco 1G single-mode fiber links.
Does ORM Systems ship GLC-ZX-SMD internationally?
ORM Systems ships internationally and can quote GLC-ZX-SMD for global delivery when stock and export conditions allow. International buyers should confirm destination, duties, taxes, insurance, delivery deadline, and any import documentation required for optical modules. ORM Systems can also support multi-site spare orders for campus, utility, service provider, and enterprise networks.