Configuring N Port Virtualization; Information About Npv; Npv Overview - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

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Configuring N Port Virtualization

This chapter contains the following sections:

Configuring N Port Virtualization

By default, Cisco Nexus 5000 Series switches operate in fabric mode. In this mode, the switch provides

standard Fibre Channel switching capability and features.

In fabric mode, each switch that joins a SAN is assigned a domain ID. Each SAN (or VSAN) supports a

maximum of 239 domain IDs, so the SAN has a limit of 239 switches. In a SAN topology with a large number

of edge switches, the SAN may need to grow beyond this limit. NPV alleviates the domain ID limit by sharing

the domain ID of the core switch among multiple edge switches.

In NPV mode, the edge switch relays all traffic from server-side ports to the core switch. The core switch

provides F port functionality (such as login and port security) and all the Fibre Channel switching capabilities.

The edge switch appears as a Fibre Channel host to the core switch and as a regular Fibre Channel switch to

its connected devices.

Configuring N Port Virtualization, page 497

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide

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