GLC-SX-SMD - Cisco 1Gbps 1000Base-SX Single-Mode Fiber SFP Transceiver Module

GLC-SX-SMD - Cisco 1Gbps 1000Base-SX Single-Mode Fiber SFP Transceiver Module

SKU: GLC-SX-SMD Brand: Cisco Browse: Cisco SFP & QSFP Transceivers Category: Transceiver
$85.42 In Stock — Usually Ships in 1–3 Business Days

Specifications

Part Identification

  • Part Number / MPN

    GLC-SX-SMD

  • Manufacturer

    Cisco

  • Category

    Transceiver

Order & Fulfillment Details

  • Condition

    Refurbished

    Quality Tier
    Professionally tested — new available on request

  • Warranty

    90-Day Pro Disk Network Warranty

    Coverage
    Advance replacement — we ship first, you return the faulty unit

  • Shipping

    Free over $150 — usually ships in 1–3 business days

  • Returns

    30-Day Returns — US

    Return Window
    Original packaging required
Part Number / MPNGLC-SX-SMD
ManufacturerCisco
CategoryTransceiver
ConditionRefurbished — new available on request
Warranty90-Day Pro Disk Network Warranty — advance replacement
ShippingFree over $150 — usually ships in 1–3 business days
Returns30-Day Returns — US
View Full Details & Buy Now

The GLC-SX-SMD is a Cisco transceiver component. Pro Disk Network sells the GLC-SX-SMD for $85.42 with US shipping in 1–3 business days and a 30-day return guarantee.

Reviewed by: — . Specifications, compatibility, and pricing for the GLC-SX-SMD are shown on this page.

  • US-based LLC — 7345 W Sand Lake Rd, STE 210, Office 3208, Orlando, FL 32819
  • US Shipping in 1–3 Business Days — in-stock orders ship via UPS
  • 30-Day Returns — pre-paid label on DOA and defective items

Looking for more Cisco parts? Browse the full Pro Disk Network Cisco catalog › US shipping in 1–3 business days, 30-day returns on every Cisco order.

Have technical questions about SFP transceivers? Real questions from IT engineers, answered by Pro Disk Engineering ›

Quick Answer: Is the GLC-SX-SMD compatible with my switch?

Pro Disk Network validates every GLC-SX-SMD against the target switch's published compatibility matrix before shipment. If you let us know your switch model and firmware version, we will confirm fitment and code the module appropriately (Cisco-coded, Juniper-coded, HPE-coded, etc.) at no extra charge.

How fast does the GLC-SX-SMD ship?

Pro Disk Network usually dispatches the GLC-SX-SMD in 1–3 business days. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.

Email engineering for a compatibility check ›

Common Use Cases for GLC-SX-SMD

The GLC-SX-SMD is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.

  • DCI (Data Center Interconnect) — Inter-DC routing or aggregation. LR4/LR8 transceivers for 10–80 km, ER4 for 40 km, ZR4 for coherent long-haul.
  • Campus Distribution — Catalyst-class campus distribution between IDF and MDF closets. PoE+ where wireless APs and IP phones share infrastructure.
  • Branch / Edge — Smaller form-factor switches and routers for branch sites. SD-WAN-compatible or static-VPN-attached as the architecture dictates.

What is the GLC-SX-SMD?

The GLC-SX-SMD is a Cisco network interface module, manufactured by Cisco. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with dispatch in 1–3 business days, backed by a 30-day return guarantee.

Pros & Cons of GLC-SX-SMD

Pros

  • US shipping in 1–3 business days cuts deployment downtime

Cons

  • Not for hyperscale ZR coherent — different SKU family
  • Some vendors deprecate firmware on EOL part numbers
  • Mismatched optic+switch firmware can require manual override

Frequently Asked Questions about GLC-SX-SMD

Is the GLC-SX-SMD a genuine Cisco part?
Yes. Pro Disk Network sources every GLC-SX-SMD as factory-original Cisco inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Cisco servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Is the GLC-SX-SMD compatible with my switch?
Pro Disk Network validates every GLC-SX-SMD against the target switch's published compatibility matrix before shipment. If you let us know your switch model and firmware version, we will confirm fitment and code the module appropriately (Cisco-coded, Juniper-coded, HPE-coded, etc.) at no extra charge.
How fast does the GLC-SX-SMD ship?
Pro Disk Network usually dispatches the GLC-SX-SMD in 1–3 business days. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
What is the warranty on the GLC-SX-SMD?
New GLC-SX-SMD units carry the full Cisco manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the GLC-SX-SMD?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.

Volume Pricing for GLC-SX-SMD

Similar Products

From the Same Series as GLC-SX-SMD

Other parts that share the GLC series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.

  • GLC-SX-MM — Cisco GLC-SX-MM 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module Spare — $2.69
  • GLC-SX-MM--RF — Cisco GLC-SX-MM=-RF 1.25Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $78.00
  • GLC-SX-MM-06 — GLC-SX-MM-06 - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $98.84
  • GLC-SX-MM-2K — GLC-SX-MM-2K - Cisco 1Gbps 1000Base-SX Multi-mode Fiber 2km 1310nm Duplex LC Connector SFP Transceiver Module — $134.01
  • GLC-SX-MM-ACC — GLC-SX-MM-ACC - Accortec 1Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $121.05
  • GLC-SX-MM-RF — GLC-SX-MM-RF - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $154.38
  • GLC-SX-MM-RGD — Cisco GLC-SX-MM-RGD Multi-mode 1.25Gbps 1000Base-SX Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $176.21
  • GLC-SX-MMD — GLC-SX-MMD - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $10.53
  • GLC-SX-MMD--A1 — Cisco GLC-SX-MMD=-A1 1.25Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $99.99
  • GLC-SX-MMD-ACC — GLC-SX-MMD-ACC - Accortec 1.25Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $123.79
  • GLC-SX-MMD-RF — GLC-SX-MMD-RF - Cisco 1.25Gb/s 1000Base-SX Multi-Mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $150.88
  • GLC-SX-MMD-RF-CPO — GLC-SX-MMD-RF-CPO - Cisco 1.25Gbps 1000Base-SX Multi-mode Fiber 550m 850nm Duplex LC Connector SFP Transceiver Module — $105.68

Pro Disk Network Buyer’s Guide: Transceiver

Optic Coding, Vendor Lock-In, and Multi-Vendor Compatibility

If you are running a multi-vendor leaf-spine architecture (Arista leaves and Cisco spines, for example), order optics coded for each endpoint separately. Optics in DAC and AOC cables are factory-coded to each end and cannot be flashed in-field. Plan the coding split at design time and document it in your network drawings.

Bandwidth Sizing for Spine-Leaf, EVPN-VXLAN, and Hyperconverged Storage

Sizing network bandwidth for a leaf-spine fabric using the GLC-SX-SMD starts with the workload mix. For general-purpose virtualisation, plan 10G server-to-leaf, 25G or 40G leaf-to-spine; oversubscription up to 4:1 is acceptable. For hyperconverged storage (vSAN, Ceph, Storage Spaces Direct), plan 25G server-to-leaf at minimum, 100G leaf-to-spine, oversubscription 1.5:1 maximum. East-west traffic dominates in HCI clusters and starves on oversubscribed fabrics.

Related Categories

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Enterprise Networking Hub

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Network switches, routers, firewalls, NICs, SFP and QSFP transceivers, DAC cables, wireless access points.

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