Arista 25G SFP28 SR Optical Transceiver

The Arista 25G SFP28 SR Optical Transceiver is a compact, hot-swappable optical module designed for 25 Gigabit Ethernet connectivity over multimode fiber. This transceiver bridges 25G-capable network interface cards (NICs) installed in enterprise servers to top-of-rack (ToR) switches, forming the critical physical layer of modern server rack deployments. The SR (Short Range) variant supports distances up to 100 meters over OM3/OM4 multimode fiber, positioning it as the optimal choice for intra-rack and intra-row data center connectivity without the cost overhead of single-mode solutions.

The module operates across standard operating temperature ranges suitable for data center environments and integrates digital diagnostic monitoring (DDM) capabilities for real-time optical signal health assessment. Its low power consumption and compact form factor minimize thermal load within densely populated switch line cards and server NIC slots. Arista's transceiver is engineered to meet industry compliance standards and interoperability specifications for 25GBASE-SR as defined by IEEE 802.3by and SFF-8402 MSA specifications.

Launched in Q1 2023, this transceiver has become the most frequently requested optical SKU across enterprise deployments, reflecting strong adoption in hyperscale-adjacent and mission-critical server refresh cycles. Its dominance in procurement reflects both technical performance and ecosystem alignment with mainstream 25G NIC adoption across x86 server platforms.

Ideal for

• Server-to-ToR switching fabric in enterprise data centers requiring 25G per-server uplink capacity
• High-performance computing (HPC) cluster interconnects for tightly coupled workloads with latency-sensitive communication patterns
• Multi-tenant cloud infrastructure deployments standardizing on 25G server NIC to switch connectivity
• Database and analytics clusters requiring non-blocking intra-rack bandwidth for large dataset operations
• VMware vSphere and Hyper-V environments scaling virtual machine density with corresponding network I/O demands
• NVMe over Fabrics (NVoF) storage networks distributing flash storage across racks via 25G interconnects

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.