Arista QSFP-200G-LR4 Compatible QSFP56 200G LR4 Transceiver Module | 200GBASE-LR4 1310nm LWDM4 10KM PAM4 Duplex LC/UPC SMF | HYTOPTODEVICE

Arista QSFP‑200G‑LR4 Compatible 200G QSFP56 LR4 Transceiver | 200GBASE‑LR4 LWDM4 1310nm 10km Duplex LC/UPC SMF Optical Module HYTOPTODEVICE

Product Overview

HYTOPTODEVICE 200G QSFP56 LR4 transceiver serves as a drop‑in replacement for Arista QSFP‑200G‑LR4. Built to 200GBASE‑LR4 and QSFP56 MSA SFF‑8636 standards, this optic delivers stable 200Gbps (4×53.125G PAM4) transmission up to 10km over OS2 single‑mode fiber, adopting LWDM4 1310‑grid wavelengths via duplex LC/UPC connector.

Pre‑programmed with Arista‑specific EEPROM data, it supports plug‑and‑play deployment without unsupported transceiver alarms on Arista EOS switches and routers. HYTOPTODEVICE provides factory bulk stock, sample trial orders and OEM customization for wholesalers, distributors and system integrators deploying Arista long‑distance metro, campus and DCI links.

Key Technical Specifications


For detailed technical specifications, please refer to the Datasheet

For detailed operation instructions, please refer to the User Guide.

Full Compatibility List & Supported Network Hardware

1. Supported Hardware & Firmware

Connectivity Solutions(Applications)

1. 200G to 200G for Switch-Switch Interconnection

3.200G Structured Cabling

The Core Feature 

FAQ

Q1: Can this LWDM4‑based 200G QSFP56 LR4 transceiver work normally when inserted into a QSFP28 port on Arista devices?
A: No, this Arista‑compatible 200GBASE‑LR4 transceiver features fixed 200G PAM4 operating rate and does not support downward operation on QSFP28 ports. Installing it on QSFP28 ports will cause link failure. Normal operation requires a native QSFP56 port on Arista switches or routers.

Q2: Is direct cross‑standard interoperability supported between this LWDM4 200G LR4 and CWDM4‑based 200G FR4 optics?
A: No. 200GBASE‑LR4 LWDM4 and 200GBASE‑FR4 CWDM4 adopt different wavelength grids and optical budgets. Valid links require matching LWDM4‑compliant 200GBASE‑LR4 transceivers on both ends; mixing LR4 and FR4 modules cannot establish valid network connections.

Q3: Does this long‑reach Arista optic support duplex OS2 single‑strand fiber transmission for metro‑DCI links with LWDM4 wavelength grid?
A: Yes. Adopting integrated LWDM4 MUX/DEMUX technology, this transceiver realizes bidirectional 200G PAM4 data transmission over one duplex OS2 single‑mode fiber pair. It is highly suitable for Arista long‑distance point‑to‑point metro and data‑center interconnection links.

Q4: Can I use multimode fiber for this 10km 200G LR4 long‑haul transmission?
A: No. This 10km long‑reach module is exclusively designed for OS2 single‑mode fiber. Multimode fiber has large dispersion and high signal loss, which cannot support stable 200G long‑distance transmission over 10km, easily causing packet loss and link dropout.

Q5: Why adopt LWDM4 1300‑grid narrow‑spacing wavelength combination for 10km Arista metro‑DCI network links?
A: The LWDM4 1300‑grid narrow channel spacing delivers improved spectral tolerance under PAM4 modulation. It mitigates wavelength drift under varying temperature and guarantees stable and low‑loss signal transmission for 10km long‑reach links.

Q6: Is additional attenuation processing required when using this 10km LR4 module for short‑distance links under 1km?
A: Yes. This 10km long‑reach LR4 module has high transmit optical power. Direct use on links shorter than 1km will overload the APD receiver. It is necessary to deploy a matched LC duplex optical attenuator for power matching to ensure stable short‑distance operation.

Q7: How does chromatic dispersion affect signal quality of 10km LWDM4‑based 200GBASE‑LR4 links?
A: Long‑distance single‑fiber transmission inevitably produces chromatic dispersion, which broadens optical pulses and increases bit error rates. This LWDM4 LR4 module is pre‑tested and optimized for narrow‑spacing LWDM4 dispersion budgets, perfectly adapting to 10km OS2 fiber transmission and maintaining ultra‑low bit‑error‑rate and stable link status.

Q8: What risks does excessive incoming optical power bring to this Arista QSFP56 LR4 transceiver with LWDM4 lasers?
A: The built‑in high‑sensitivity APD receiver is vulnerable to damage from excessive input optical power. Unattenuated short‑link testing is the main cause of module burnout. Standard power‑matching construction can effectively avoid hardware damage and extend module service life.

Q9: What working temperature environment is suitable for this Arista compatible LWDM4 optical module?
A: The standard commercial‑grade module supports stable operation at 0℃ to 70℃, adapting to conventional indoor Arista equipment cabinet environments. For outdoor base stations, industrial sites and other harsh scenarios, customized industrial‑grade (-40℃ ~ +85℃) modules are available.

Q10: Does this transceiver comply with universal industry standards for Arista network adaptation with LWDM4 1300‑grid?
A: Yes. This 200GBASE‑LR4 QSFP56 LR4 transceiver fully complies with IEEE 802.3bs, QSFP56 MSA SFF‑8636 industry standards. It supports complete CMIS DDM real‑time monitoring and standard QSFP56 mechanical specifications, ensuring universal compatibility and stable operation on mainstream Arista network devices.

Q11: Does this bulk wholesale optical module have complete qualification certifications?
A: Yes. All HYTOPTODEVICE 200G QSFP56 LR4 LWDM4 modules pass RoHS environmental compliance certifications. Complete test reports and certification documents can be provided to support customer customs clearance, project audit and batch procurement verification.

Q12: What after‑sales support is available for faulty modules in bulk deployment?
A: We support long‑term warranty and fast replacement services for bulk orders. Sufficient spot inventory ensures rapid global shipment and after‑sales replacement. Global integrators and distributors can enjoy exclusive stock reservation and priority after‑sales support for key projects.

Q13: What is the standard maintenance cycle for this 10km long‑haul LWDM4 optical module?
A: It is recommended to clean the duplex LC optical port before installation to remove dust and impurities. For long‑term running 10km long‑haul links, perform port cleaning and link loss inspection every 6‑12 months to avoid increased insertion loss and signal attenuation caused by port contamination.

Q14: Can this 200G QSFP56 LR4 LWDM4 module be used for 6‑7km metro data‑center interconnection?
A: Absolutely. With a maximum reach of 10km, this module has sufficient optical power margin to fully cover 6‑7km metro‑DCI scenarios. It can resist signal loss caused by fiber splicing and connector docking, realizing stable 200G high‑bandwidth long‑distance interconnection.

Q15: Is this LWDM4‑based transceiver applicable to leased dark fiber links of telecom operators?
A: Yes. This standard MSA‑compliant LR4 module is perfectly compatible with operator leased OS2 dark fiber. It supports metro aggregation and long‑distance DCI services. Our technical team can assist in link budget calculation to match different fiber loss environments.

Packaging & Custom OEM Solutions