Cisco QSFP-100G-LR4-S Compatible 100GBASE-LR4 QSFP28 10km SMF Module
Cisco compatible QSFP-100G-LR4-S - Key Features
- Compatibility: Cisco
- Media Type: Single-Mode Fiber (SMF)
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 10 km
- Average Link Budget: 6.3 dB
- Tx Wavelength: 1310 nm
- Supported Data Rate: 112 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
Cisco QSFP-100G-LR4-S Price
In Stock - Ships Next Business DayCisco compatible QSFP-100G-LR4-S Specifications
Form Factor | QSFP28 |
Modulation | NRZ (Non-Return to Zero) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Double LC/UPC |
Fiber Count | Duplex |
Maximum Distance | 10 km |
Average Link Budget | 6.3 dB |
TX Wavelength | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
RX Wavelength | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
Supported Data Rate | 112 Gbps |
Supported Ethernet Applications | 100G Ethernet (103.125 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Transmitter Type | EML Laser |
Tx Wave Bandwidth | 4 LAN WDM Seperated 1310 nm Lanes (15.66 nm 1294.53 – 1310.19nm) (L0 Tx center 1295.56nm, L1 Tx center 1300.05nm, L2 Tx center 1304.58nm, L3 Tx center 1309.14nm) |
Average Launch Power (Min) Each Lane | -4.3 dBm |
Average Launch Power (Max) Each Lane | 4.5 dBm |
Extinction Ratio (Min) | 4 dB |
Receiver Type | PIN photodiode |
RX Wave Bandwidth | 4 LAN WDM Seperated 1310 nm Lanes (15.66 nm 1294.53 – 1310.19nm) (L0 Tx center 1295.56nm, L1 Tx center 1300.05nm, L2 Tx center 1304.58nm, L3 Tx center 1309.14nm) |
Average Receiver Sensitivity (Min) Each Lane | -10.6 dBm |
Average Receiver Sensitivity (Max) Each Lane | -8.6 dBm |
Receiver Overload | 5.5 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 3.5 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, Class 1 FDA and IEC60825-1 Laser Safety Compliant, IEEE 802.3ba, IEEE 802.3bm, 100GBASE-LR4, QSFP28 MSA, SFF-8636 (Management Interface for 4-lane modules), SFF-8665 |
Cisco compatible QSFP-100G-LR4-S Datasheet
v2Complete technical specifications and product details
Cisco compatible QSFP-100G-LR4-S Description
EdgeOptic's QSFP-100G-LR4-S compatible is a Cisco-coded 100GBASE-LR4 QSFP28 transceiver built on our 100G-QSFP28-10 platform. The module ships with Cisco-recognized EEPROM identification, so it registers cleanly on Nexus 9000, Catalyst 9500, ASR 9000, and NCS 5500 platforms without the service unsupported-transceiver command. Optical and electrical behavior matches the Cisco original part.
QSFP-100G-LR4-S is Cisco's part number for a 100GBASE-LR4 QSFP28 optical transceiver per IEEE 802.3ba. The module carries 100GbE over a duplex single-mode fiber pair using LAN WDM. Four wavelength channels at 1295.56, 1300.05, 1304.58, and 1309.14 nm each run 25.78125 Gbps NRZ, for an aggregate line rate of 103.125 Gbps. The transmitter uses an EML (Electro-absorption Modulated Laser) array; the receiver uses a PIN photodiode array. The four channels are multiplexed inside the module within the 1310 nm window and carried over two fibers, not the eight fibers required by parallel-fiber standards like 100GBASE-SR4.
Optical link budget is 6.3 dB per IEEE 802.3ba, which supports up to 10 km over OS2 (G.652.D) single-mode fiber. Per-lane transmit power is -4.3 dBm to +4.5 dBm; per-lane receiver sensitivity is -10.6 dBm at BER 5x10-5 pre-FEC; receiver overload is -1.3 dBm. Actual reach depends on fiber attenuation and connector losses in the specific plant, calculated from the minimum link budget and typical 0.35 dB/km attenuation at 1310 nm. The dual LC/UPC connector interface accepts standard SMF patch cords and structured cabling.
Digital diagnostic monitoring (DDM/DOM) reports per-lane TX and RX optical power, module temperature, laser bias current, and supply voltage through the SFF-8636 management interface. The module has no internal FEC engine. It is fully transparent to host-side RS-FEC (IEEE 802.3bj Clause 91) running in the switch ASIC. If the Cisco port is configured with RS-FEC enabled, the module passes the FEC-encoded bitstream without intervention. The module conforms to the QSFP28 MSA (SFF-8665) and presents a CAUI-4 host electrical interface (4x25G NRZ lanes per IEEE 802.3bj Clause 83).
Operating temperature range is 0 to 70 C. Typical power consumption is 3.5 W; the module is designed within the QSFP28 Class 4 cage budget (4.5 W maximum per SFF-8665). EdgeOptic codes the module with Cisco-specific EEPROM data so it works on any Cisco platform that lists QSFP-100G-LR4-S in its supported optics table. Verified platforms include Nexus 9000 series (multiple line cards), Catalyst 9500 series, ASR 9000 series, and NCS 5500 series. Always cross-check the Cisco transceiver compatibility matrix for a specific line card before deployment. Note that QSFP-100G-LR4-S and QSFP-100G-LR4-S= are the same module, the equals suffix indicates the spare ordering code in Cisco's system.
The module ships CE/RoHS certified and complies with QSFP28 MSA SFF-8665 and IEEE 802.3ba 100GBASE-LR4. Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For project-quantity pricing or alternative vendor coding, contact our sales team.
Frequently Asked Questions
What is the difference between QSFP-100G-LR4-S and QSFP-100G-LR-S?
Both reach 10 km over single-mode fiber, but the optical technology differs. QSFP-100G-LR4-S is a 4-lane LAN WDM module per IEEE 802.3ba: four 25 Gbps NRZ channels at 1295.56, 1300.05, 1304.58, and 1309.14 nm multiplexed onto one fiber pair. QSFP-100G-LR-S is a single-lambda PAM4 module per IEEE 802.3cu (100GBASE-LR1) that carries 100G on one wavelength near 1310 nm. The two are not interoperable on a direct fiber link, the optical interfaces differ. Choose LR4-S for compatibility with existing 100GBASE-LR4 ports; choose LR-S where the host platform requires the single-lambda variant.
What is the difference between QSFP-100G-LR4-S and QSFP-100G-LR4-S=?
They are the same physical module. QSFP-100G-LR4-S is the integration ordering code used when the optic is bundled with a switch, line card, or chassis order. QSFP-100G-LR4-S= is the spare ordering code used when the optic is purchased standalone for replacement or expansion. Cisco's part numbering convention applies the equals suffix across most of its transceiver line. EdgeOptic supplies the compatible module against either ordering code.
Which Cisco platforms support QSFP-100G-LR4-S?
Verified Cisco platforms include the Nexus 9000 series across multiple line cards (such as N9K-C92160YC-X, N9K-C93180YC-EX, and N9K-C9336C-FX2), the Catalyst 9500 series, the ASR 9000 series, and the NCS 5500 series. Per-line-card support varies, so check the Cisco transceiver compatibility matrix for the specific platform and software release. The module also works on any third-party platform that accepts an MSA-compliant 100GBASE-LR4 QSFP28 with Cisco-coded EEPROM.
Does the EdgeOptic QSFP-100G-LR4-S compatible work on Nexus 9000 without the service unsupported-transceiver command?
Yes. EdgeOptic codes the module with Cisco-recognized EEPROM identification, so Nexus 9000 (and other Cisco NX-OS platforms) accept the optic as a recognized transceiver. The service unsupported-transceiver CLI workaround is not required. The port comes up without warning messages on supported line cards.
Does QSFP-100G-LR4-S use FEC?
The module has no internal FEC engine. IEEE 802.3ba 100GBASE-LR4 does not mandate FEC inside the optic. RS-FEC per IEEE 802.3bj Clause 91 runs in the host switch ASIC and the module is fully transparent to it. On Cisco Nexus platforms, FEC is typically auto-negotiated or set per port; confirm the FEC mode against the platform release notes for the line card in use.
What is the difference between Cisco QSFP-100G-LR4-S and the unqualified QSFP-100G-LR4 part number?
Cisco originally shipped QSFP-100G-LR4 (no suffix) as a multi-rate optic before introducing the simplified single-rate QSFP-100G-LR4-S. Today Cisco's primary 100G LR4 SKU is QSFP-100G-LR4-S; the unqualified QSFP-100G-LR4 part number is also commonly used by Nokia and other vendors as their literal SKU. When ordering for Cisco platforms, use QSFP-100G-LR4-S; for Nokia platforms, the unqualified QSFP-100G-LR4 is correct. The optical specification is the same across the variants, but EEPROM coding is vendor-specific, a module coded for one vendor will not register cleanly on another platform without re-coding.