Cisco Switches info

Nexus Family switches :-

Nexus 7000 family 7009 7010 7018 very dense 10 Gigi core

Nexus 5500 second generation top-of-rack 10Gb optional layer 3 capability

Nexus 5010 and 5020 --layer 2 swtiches only,supports FCOE
5010 --1U --20 10Gb ports plus module
5020 --2U --40 10Gb ports plus module

Nexus 2000 series (top of rack) these are not ture switches they are called FEX must be connected
with Nexus 5K or 7K .No local switching .All the switching is done by talking to 5K and 7K.
support FCOE.

FEX : FEX is a tecnology where the switching fabric is extended  by using devices,adapters or software.
requires connectivty back to a smart device.

Switch FEX :Examples Nexus 2K of a5548up.

Adapater FEX :Split a physical adapter in to mutiple logical adapters.

VM FEX :Extends adapter FEX in to a Virtual machine.

Nexus 1000v :Software switches
two Modules VSM Virtual Supervisor Module -(Mgmt Control plane)
            VEM Virtual Ethernet Module -(Dataplane)

MDS Switches Cisco Fibre Channel Switches

Cloud Provisioning and Automation:
Tidal is cisco orchetration
Newscale is Cisco Cloud Protal like cloud Director from Vmware but is provides support for other hyperisors as well.and chargeback