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The Cisco Nexus Series switches are modular network switches designed for the data center. Cisco Systems introduced the Nexus Series of switches on January 28, 2008. The first chassis in the Nexus 7000 family is a 10-slot chassis with two supervisor engine slots and eight I/O module slots at the front, as well as five crossbar switch fabric modules at the rear. Beside the Nexus 7000 there are also other models in the Nexus range.

Cisco Nexus 1000v

The 1000v is a virtual switch for use in VMware environments. It is as such not a physical box but a software application that interacts with VMware products so you can virtualize the networking environment and be able to configure your VMware vSphere ESX and ESXi system as if all virtual servers have connections to a physical switch and include the capabilities that a switch offers such as multiple VLAN's per virtual interface, layer-3 options, security features etc.

Nexus 2000 series

The Nexus 2000 series are fabric extenders: 'top of rack' 1U high system that can be used in combination with higher end Nexus switches like the 5000 or 7000 series, The 2000 series consists of 4 different models. Cisco Nexus 2000 Series Fabric Extenders are designed to provide connectivity for rack and blade servers, as well as converged fabric deployments. Three models offer 24 or 48 gigabit only or gigabit/fastethernet copper interfaces and up to 4 10 Gigabit uplink interfaces on copper or fibre.

Nexus 3000 series

Cisco Nexus 3000 Series Switches extend the proven innovations of Cisco Unified Fabric innovations to the High-Frequency Trading (HFT) market and Big Data environments, Line-rate Layer 2/Layer 3 switching at ultra-low latencies enables customers to implement high-performance infrastructures for HFT workloads.

Cisco Nexus 4000 series

The Cisco Nexus 4000 Series Blade Switches extend the benefits of the Cisco Nexus Family to blade servers, The Nexus 4000 series consists of only the model 4001: a blade-switch module for IBM BladeCenter that has all 10 Gbit Fibre Channel over Ethernet or FCoE interfaces. This blade-switch had 14 server-facing downlinks running on 1Gbit/s or 10 Gbit/s and six uplinks using 10Gbit/s SFP+ modules.

Cisco Nexus 5000 series

Cisco Nexus 5000 Series Switches help transform your data center, with a standards-based, multipurpose, multiprotocol, Ethernet-based fabric. The Nexus 5000 series is a range of 5 models 1U or 2U rack-switches offering 20 to 96 interfaces running on 1 or 10Gb ethernet and 10 Gb FCoE interfaces.

Cisco Nexus 7000 series

The Cisco Nexus 7000 Series platform runs on Cisco NX-OS Software. It was specifically designed for the most mission-critical deployments in the data center and campus, The current offering of the Nexus 7000 chassis now includes 9, 10 and 18 slot chassis.