CATNIX is a distributed traffic exchange point, with 4 points of presence (PoP) in the city of Barcelona and its metropolitan area, each equipped with a switch.

The connection between the first Arista 7280SR and the Arista 7504R, is made at 100 Gbps and 40 Gbps as a backup connection. The connection of this with the second Arista 7280SR, is made at a speed of 100 Gbps.

CATNIX offers 1 Gbps, 10 Gbps and 100 Gbps interfaces. It also offers aggregated ports on these speeds: 2 and 5 Gbps over 10 Gbps ports, and 20 and 50 Gbps over ports of 100 Gbps.

Private exchanges are allowed, in addition to the common IXP exchanges. There are two possibilities: separate VLAN or dedicated circuits.

Switches currently have a switching capacity of 2.16 Tbps in two of the nodes, and 25.6 Tbps in the last node. The Arista 7280R has 48 ports of 1/10 Gbps and 6 more ports of 100 Gbps each. The Arista 7504R has 48 ports of 1/10 Gbps and 38 ports of 100 Gbps, with the ability to install new line cards with ports of different speeds if needed.

These switches also have redundant power supplies and a large capacity to their buffers (ultradeep buffers) that avoid microsaturations, especially between ports at very different speeds.