Arista DCS-7280SR3AK-48YC8-R | 7280R3A 48-Port 50G Switch, 8x 100G QSFP28, 1U

Q: What is the difference between the 7280SR3AK and standard 7280SR3 models?
A: The 7280SR3AK features 50GbE ports (vs 25GbE), 200G-capable QSFP-DD ports, 64GB memory, and the K variant FlexRoute tables supporting over 5 million IPv4 routes compared to 2 million on standard models. It also includes TunnelSec encryption on all ports.

Q: Can this switch be deployed as a leaf or spine switch?
A: Yes, the DCS-7280SR3AK-48YC8-R is designed for both leaf and spine roles in modern data center fabrics. Its 48×50GbE ports serve host connectivity or inter-switch links, while 8×100GbE QSFP28 uplinks connect to spine or core layers.

Q: What encryption capabilities does this model support?
A: The K variant includes Arista TunnelSec technology providing line-rate AES-256-GCM encryption across all ports. It supports IEEE 802.1AE MACsec for layer 2, IPsec for layer 3, and VXLANsec for overlay networks, enabling end-to-end encryption without performance impact.

Q: Is this switch compatible with non-Arista networks?
A: Yes, the DCS-7280SR3AK-48YC8-R supports industry-standard protocols including BGP, OSPF, VXLAN, EVPN, and standard optics. It interoperates seamlessly with multi-vendor environments and supports Arista-qualified or third-party compatible transceivers.

Q: What routing protocols and features does the K variant support?
A: The K variant supports full Layer 3 routing including BGP, OSPF, IS-IS, VXLAN EVPN, segment routing, MPLS with LDP and RSVP-TE, VRF-Lite, and advanced ACLs with over 100K rules. It's designed for internet peering, carrier edge, and large-scale data center interconnect applications.