QSFP-100G-ERL4 Arista Compatible 100G QSFP28 40KM Transceiver
Arista compatible QSFP-100G-ERL4 - Key Features
- Compatibility: Arista
- Media Type: Single-Mode Fiber (SMF)
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 40 km
- Guaranteed Link Budget: 22 dB
- Tx Wavelenght: 1310 nm
- Supported Data Rate: 112 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
Arista QSFP-100G-ERL4 Price
SKU:100G-QSFP28-40-AR
In Stock - Ships Next Business DayArista compatible QSFP-100G-ERL4 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 | 40 km |
Guaranteed Link Budget | 22 dB |
TX Wavelenght | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
RX Wavelenght | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
Supported Data Rate | 112 Gbps |
Supportet Ethernet Applications | 100G Ethernet (103.125 Gbps) |
Supported Fiber Channel Applications | 4x 32G Fiber Channel (112.2Gbps) |
Optical Transport Network (OTN) Applications | OTU4 (112 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 | -2 dBm |
Average Launch Power (Max) Each Lane | 4 dBm |
Extinction Ratio (Min) | 4 dB |
Receiver Type | APD 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 | -21 dBm |
Average Receiver Sensitivity (Max) Each Lane | -18 dBm |
Receiver Overload | -1 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, Class 1 FDA and IEC60825-1 Laser Safety Compliant, IEEE 802.3ba, IEEE 802.3bm, 100GBASE-ER4 Lite, 128GFC Gen 6, OTN OTU4, QSFP28 MSA, SFF-8636 (Management Interface for 4-lane modules), SFF-8665 |
Arista compatible QSFP-100G-ERL4 Datasheet
v2Complete technical specifications and product details
Arista compatible QSFP-100G-ERL4 Description
QSFP-100G-ERL4 is Arista's part number for a 100GBASE-ER4 Lite QSFP28 transceiver. Arista uses the "ERL4" naming convention where other vendors write "ER4L" — the module is the same ER4 Lite specification. This EDGE compatible module matches the original Arista specifications with EEPROM coded for Arista EOS recognition. It operates over duplex single-mode fiber at four LAN-WDM wavelengths (1295.56, 1300.05, 1304.58, and 1309.14 nm), reaching up to 40 km with host FEC or 30 km without FEC.
The module uses EML transmitters and APD (Avalanche Photodiode) receivers, carrying four lanes at 25.78125 Gbps each for an aggregate 103.125 Gbps line rate. DDM/DOM provides real-time readings of TX/RX optical power, laser bias current, temperature, and supply voltage. Maximum power consumption is 4.5 W from a single 3.3 V supply. Operating temperature range is 0 to 70 °C.
The QSFP-100G-ERL4 is supported on Arista 7280R3 series, 7500R3 series, and 7800R3 series platforms with QSFP28 ports. Our compatible module is coded with Arista-recognized EEPROM values for plug-and-play operation in Arista EOS.
Arista writes the part number as QSFP-100G-ERL4 ("ER-Lite-4"), while Cisco uses QSFP-100G-ER4L-S and Juniper uses QSFP-100G-ER4L. All three refer to the same 100GBASE-ER4 Lite specification with identical wavelengths, link budget, and reach. ER4 Lite modules from different vendors are interoperable on the same fiber link, provided FEC is configured consistently on both ends.
Our compatible QSFP-100G-ERL4 is CE and RoHS certified, QSFP28 MSA-compliant, and conforms to 100G Lambda MSA (100GBASE-ER4 Lite). Before delivery, every module undergoes optical parameter measurement, connector cleanliness inspection, and EEPROM data validation testing.
For volume pricing, lead times, or technical questions about the QSFP-100G-ERL4, contact our sales team. We can help match the right module to your Arista deployment.
Frequently Asked Questions
Is QSFP-100G-ERL4 the same as QSFP-100G-ER4L?
Yes. Arista uses the naming "ERL4" while Cisco (ER4L-S), Juniper (ER4L), and other vendors write "ER4L." All refer to the same 100GBASE-ER4 Lite specification: QSFP28 form factor, LAN-WDM wavelengths, 40 km reach with FEC. The naming difference is vendor convention only.
Which Arista switches support the QSFP-100G-ERL4?
The QSFP-100G-ERL4 is supported on Arista 7280R3, 7500R3, and 7800R3 series platforms with QSFP28 ports. On the 7280R3, some port positions have thermal restrictions for ER4 Lite modules. Check the Arista Transceiver Compatibility Guide for your specific model and port mapping.
Can I use the Arista QSFP-100G-ERL4 with a Cisco ER4L-S on the other end?
Yes. Both modules use the same LAN-WDM wavelengths (1295-1309 nm) and are fully interoperable on the same single-mode fiber link. Ensure FEC settings match on both ends. If one side has FEC enabled and the other does not, the link will not establish.
Does the QSFP-100G-ERL4 require FEC for 40 km reach?
Yes. Without host RS-FEC, the module reaches approximately 30 km. With RS-FEC enabled on the Arista switch, reach extends to 40 km. Configure FEC in Arista EOS at the interface level and ensure the remote end matches.