Q28-100GP4-BXD3129-20-C Cisco Compatible 100G BiDi QSFP28 LR1 20km
Cisco compatible Q28-100GP4-BXD3129-20-C - Key Features
- Compatibility: Cisco
- Media Type: Single-Mode Fiber (SMF)
- Connector: Single LC/UPC
- Fiber Count: BiDi
- Maximum Distance: 20 km
- Average Link Budget: 9.8 dB
- Tx Wavelength: 1310 nm
- Supported Data Rate: 106.25 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Integrated in DSP
- Temperature Range: Standard 0°-70°C
Cisco Q28-100GP4-BXD3129-20-C Price
In Stock - Ships Next Business DayCisco compatible Q28-100GP4-BXD3129-20-C Specifications
Form Factor | QSFP28 |
Modulation | PAM4 (Pulse Amplitude Modulation 4-level) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Single LC/UPC |
Fiber Count | BiDi |
Maximum Distance | 20 km |
Average Link Budget | 9.8 dB |
TX Wavelength | 1310 nm |
RX Wavelength | 1291 nm |
Supported Data Rate | 106.25 Gbps |
Supported Ethernet Applications | 100G Ethernet PAM4 (106.25 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Integrated in DSP |
Transmitter Type | EML Laser |
Tx Wave Bandwidth | 20 nm |
Average Launch Power (Min) Each Lane | -0.2 dBm |
Average Launch Power (Max) Each Lane | 6.6 dBm |
Receiver Type | PIN photodiode |
RX Wave Bandwidth | 20 nm |
Average Receiver Sensitivity (Min) Each Lane | -7.6 dBm |
Receiver Overload | 7.6 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 4.5 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, IEEE 802.3cd, CAUI-4, SFF-8679 |
Cisco compatible Q28-100GP4-BXD3129-20-C Datasheet
v3Complete technical specifications and product details
Cisco compatible Q28-100GP4-BXD3129-20-C Description
EdgeOptic's Q28-100GP4-BXD3129-20-C compatible is a Cisco-coded version of the EdgeOptic BIDI-100G-Q28-SL20B multi-vendor 100G BiDi QSFP28 LR1 20km transceiver, the Side B half of a two-module single-fiber pair. No native Cisco ordering code exists for this single-lambda 20km BiDi class. The Cisco-coded EEPROM handles host platform recognition, not a genuine Cisco part number. Whether a given platform accepts the optic without additional configuration depends on the hardware model and software release; verify against the platform's transceiver support documentation.
The module uses QSFP28 form factor over a single LC/UPC connector and single-mode fiber, with a 9.8 dB average link budget across 20km. Side B transmits at 1310nm and receives at 1291nm at 106.25 Gbps PAM4 for 100G Ethernet only, with no Fibre Channel or OTN framing. The transmitter is an EML laser, the receiver a PIN photodiode with a 20nm RX bandwidth, and FEC is integrated in the DSP.
The 20km reach class follows the 100G Lambda MSA 100G-LR1-20 convention, not IEEE 802.3cu Clause 140, which defines 100GBASE-LR1 as a duplex two-fiber PMD. Compliance runs to IEEE 802.3cd, CAUI-4 and SFF-8679, with CE and RoHS marking, and 0 to 70 degrees Celsius at up to 4.5W.
Deployment requires pairing this Side B module with a Side A module at the far end. The pairing works because each side's TX wavelength falls within the other side's 20nm RX window, not because the two wavelengths mirror each other exactly. Verify support against the target platform's transceiver documentation first.
This compatible carries a lifetime warranty. For project quantity pricing or an alternate vendor coding, contact our sales team.
Frequently Asked Questions
Is Q28-100GP4-BXD3129-20-C an actual Cisco part number?
No. Cisco does not list a native ordering code for this single-lambda, single-fiber BiDi 20km class. Q28-100GP4-BXD3129-20-C is EdgeOptic's own compatible part number, built on the BIDI-100G-Q28-SL20B hardware and coded with Cisco-recognized EEPROM values for platform recognition. Acceptance behavior depends on the specific hardware model and software release; verify against the target platform's supported transceiver documentation before ordering.
Ordering for a Cisco-to-Cisco link, do I need a Q28-100GP4-BXU2931-20-C at the far end?
Yes. This module is the Side B half of a single-fiber BiDi pair, and the far end needs the Side A module, Q28-100GP4-BXU2931-20-C. Side B transmits at 1310nm and receives at 1291nm, and the pairing works because each side's transmit wavelength falls within the other side's 20nm RX bandwidth window, not because the two wavelengths are exact numeric mirrors of each other.
Can I pair this Cisco-coded Side B module with a differently vendor-coded Side A module, for example a Juniper-coded one?
The optical link depends on wavelength pairing between the Side A and Side B modules, not on which vendor EEPROM coding either side carries. Vendor coding only affects whether the host platform recognizes the module; it does not change the wavelengths on the fiber. Matching vendor coding on both ends is still the safer default and what most deployments use, so treat mixed vendor coding as something to confirm with the deployment's platform team rather than a guaranteed cross-vendor combination.