Juniper QFX5120 vs Arista 7050X3: 10/25/100G Data Center Leaf Switching Compared

Both run mature EVPN-VXLAN on the same Broadcom Trident 3 silicon, so raw fabric capability is comparable. The QFX5120 differentiates with Apstra intent-based automation that designs, deploys, and continuously validates the fabric, while the 7050X3 leans on CloudVision telemetry and a single EOS image. If you want vendor-validated, multivendor-capable fabric automation, the QFX5120 has the edge; if OS uniformity is paramount, the 7050X3 is excellent.

They are very close. Both are 1U Trident 3 leaf switches delivering up to roughly 6.4 Tbps of switching capacity with sub-microsecond cut-through latency. The QFX5120-48Y is rated as low as about 550 nanoseconds. For most enterprise and federal workloads the performance difference is not a deciding factor.

Junos is Juniper's network OS, and Apstra is an intent-based system that automates EVPN-VXLAN fabric design and detects configuration drift across vendors. Arista EOS is a single Linux-based image used across Arista's whole line, and CloudVision provides streaming telemetry, network-wide state, and change control. Apstra is more design- and intent-focused and multivendor; CloudVision is tightly integrated with EOS operations.

Juniper Networking is now part of HPE, which means QFX5120 buyers get a single vendor relationship spanning HPE ProLiant compute, Alletra storage, Aruba networking, and Juniper data center switching. Roadmaps and support continue, and bundling across the portfolio on one contract is now straightforward.

The QFX5120-48YM supports IEEE 802.1AE MACsec with AES-256 at near line rate across all port speeds, which is ideal for encrypted DCI. Arista offers MACsec on specific 7050X3 MACsec model variants. If link-layer encryption is a requirement, confirm the exact SKU on either side and we can source the correct MACsec-capable model.

Yes. We can source TAA-compliant configurations of both the Juniper QFX5120 and the Arista 7050X3 for US federal, SLED, and healthcare buyers, including GPC, SAP, and FAR procurement. As an authorized HPE and HPE Juniper Networking reseller we can also pair the QFX5120 with HPE compute and storage on the same vehicle.

For most midsize enterprises the QFX5120 tends to offer strong value, especially when combined with HPE compute and storage on a single agreement and Apstra automation that reduces operational effort. The 7050X3 commands a more premium position but pays back through operational simplicity if you already run EOS and CloudVision. We can quote both so you can compare landed cost directly.

You can build EVPN-VXLAN fabrics with switches from different vendors because EVPN-VXLAN is standards-based, and Juniper Apstra is explicitly designed to manage multivendor fabrics. In practice most operators standardize on one vendor per fabric for support simplicity, but Apstra makes a mixed or migration scenario more manageable than a single-vendor-only tool.