Arista DCS-7280SR3K-48YC8-DC-F | 7280R3 48-Port 25G Switch, 8x 100G QSFP28, DC Power

Q: What is the difference between the SR3K and standard SR3 variant?
A: The SR3K variant features enhanced routing capabilities with FlexRoute engine supporting over 5 million IPv4 routes (versus 2 million on SR3), 64GB DRAM (versus standard configuration), and 120GB SSD storage. This makes it ideal for internet peering, data center interconnect, and service provider environments requiring carrier-scale routing tables.

Q: Can the QSFP28 ports be used for 40G connectivity?
A: Yes, the 8x QSFP28 ports support flexible speeds including 40GbE and 100GbE, and can be broken out to 4x 10GbE or 4x 25GbE per port, providing deployment flexibility. Maximum total interfaces can reach up to 80 logical ports with breakout configurations.

Q: What deployment scenarios is this switch best suited for?
A: The DCS-7280SR3K-48YC8-DC-F is optimized for data center leaf-spine architectures, internet peering, content delivery networks, IP storage networks, and service provider edge applications. The DC power option and NEBS-level design make it particularly suitable for carrier and telco environments.

Q: Does this switch support network virtualization and overlay protocols?
A: Yes, Arista EOS provides comprehensive support for VXLAN, EVPN, MPLS, Segment Routing, network virtualization, and both underlay and overlay topologies. The switch also supports advanced features like MLAG, ECMP, and algorithmic ACLs for scalable access control.

Q: What routing and Layer 3 features are supported?
A: The switch supports full Layer 3 routing including BGP, OSPF, IS-IS, PIM for multicast, MPLS with LDP and RSVP-TE, Segment Routing, and internet-scale routing tables. The FlexRoute engine enables hardware-based forwarding for millions of routes with sub-microsecond convergence.