Configuring Npv; Overview; Downlink Interface And Downlink - HP FlexFabric 5700 Series Configuration Manual

Configuring NPV

Overview

NPV enables an FC SAN to accommodate more than 239 switches.
NPV switches forward traffic from nodes to the core switch.
Figure 27 shows a typical NPV network diagram.
Figure 27 NPV network diagram
NOTE:
An NPV switch must be directly connected to the core switch.

Downlink interface and downlink

A downlink interface, also known as a server interface, is an interface through which an NPV switch
connects to a node. It can be a VFC interface, both of which must be configured to operate in F mode.
A downlink is a link from an NPV switch to its node.
Each downlink interface is uniquely mapped to an operational uplink interface. All traffic from the node
connected to the downlink interface is forwarded to the core switch through the uplink interface.
The system automatically shuts down a downlink interface that meets all the following conditions:
The downlink interface is an FC interface or FC aggregate interface.
•
The trunk mode is set to off for the downlink interface.
•
• The downlink interface is assigned to a VSAN as an access port.
The downlink interface does not have available uplink interfaces in its VSAN.
•
When the downlink interface has available uplink interfaces, the system automatically brings up the
downlink interface.
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