Enabling N Port Identifier Virtualization; About Interface Descriptions; Configuring The Interface Description; About Frame Encapsulation - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 13 Configuring Interfaces
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Switch (config-if)# errdisable detect cause link-down num-times 5 duration 30

Enabling N Port Identifier Virtualization

You must globally enable NPIV for all VSANs on the MDS switch to allow the NPIV-enabled
applications to use multiple N port identifiers.
All of the N port identifiers are allocated in the same VSAN.
Note
To enable or disable NPIV on the switch, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# feature npiv
Step 3
switch(config)# no feature npiv

About Interface Descriptions

Interface descriptions should help you identify the traffic or use for that interface. The interface
description can be any alphanumeric string.

Configuring the Interface Description

To configure a description for an interface, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# interface fc1/1
switch(config-if)#
Step 3
switch(config-if)# switchport description cisco-HBA2
switch(config-if)# no switchport description

About Frame Encapsulation

The switchport encap eisl command only applies to SD port interfaces. This command determines the
frame format for all frames transmitted by the interface in SD port mode. If the encapsulation is set to
EISL, all outgoing frames are transmitted in the EISL frame format, irrespective of the SPAN source(s).
The switchport encap eisl command is disabled by default. If you enable encapsulation, all outgoing
frames are encapsulated, and you will see a new line (Encapsulation is eisl) in the show interface
SD_port_interface command output (see the
OL-18084-01, Cisco MDS NX-OS Release 4.x
Purpose
Enters configuration mode.
Enables NPIV for all VSANs on the switch.
Disables (default) NPIV on the switch.
Purpose
Enters configuration mode.
Selects a Fibre Channel interface and
enters interface configuration submode.
Configures the description of the
interface. The string can be up to 80
characters long.
Clears the description of the interface.
"Encapsulating Frames" section on page
Cisco MDS 9000 Family CLI Configuration Guide
Fibre Channel Interfaces
51-11).
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