Np Ports; Np Links; Internal Flogi Parameters - Cisco MDS 9000 Series Configuration Manual

Configuring N Port Virtualization
Command
system
terminal
this
username
vsan
wwn

NP Ports

An NP port (proxy N port) is a port on a device that is in NPV mode and connected to the NPV core switch
using an F port. NP ports behave like N ports except that in addition to providing N port behavior, they also
function as proxies for multiple, physical N ports.

NP Links

An NP link is basically an NPIV uplink to a specific end device. NP links are established when the uplink to
the NPV core switch comes up; the links are terminated when the uplink goes down. Once the uplink is
established, the NPV switch performs an internal FLOGI to the NPV core switch, and then (if the FLOGI is
successful) registers itself with the NPV core switch's name server. Subsequent FLOGIs from end devices in
this NP link are converted to FDISCs. For more details refer to the
section.
Server links are uniformly distributed across the NP links. All the end devices behind a server link will be
mapped to only one NP link.

Internal FLOGI Parameters

When an NP port comes up, the NPV device first logs itself in to the NPV core switch and sends a FLOGI
request that includes the following parameters:
• The fWWN (fabric port WWN) of the NP port used as the pWWN in the internal login.
• The VSAN-based sWWN (switch WWN) of the NPV device used as nWWN (node WWN) in the internal
After completing its FLOGI request, the NPV device registers itself with the fabric name server using the
following additional parameters:
• Switch name and interface name (for example, fc1/4) of the NP port is embedded in the symbolic port
• The IP address of the NPV device is registered as the IP address in the name server registration of the
Note The BB_SCN of internal FLOGIs on NP ports is always set to zero. The BB_SCN is supported at the F-port
of the NPV device.
Description
System management commands.
Configure terminal settings.
Shows info about current object (mode's instance).
Configure user information.
Enter the vsan configuration mode.
Set secondary base MAC addr and range for additional WWNs.
FLOGI.
name in the name server registration of the NPV device itself.
NPV device.
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
Internal FLOGI Parameters, on page 255
NP Ports
255