Displaying Wwn Information; Link Initialization Wwn Usage - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

World Wide Names
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
Changes to the world-wide names should be made by an administrator or individual who is completely
Caution
familiar with switch operations.
This section includes the following topics:
•
•
•

Displaying WWN Information

Use the show wwn commands to display the status of the WWN configuration. See Examples
30-16.
Example 30-14 Displays the Status of All WWNs
switch# show wwn status
NKAU & NKCR WWN Blks: Configured:
Example 30-15 Displays Specified Block ID Information
switch# show wwn status block-id 51
WWNs in this block: 21:00:ac:16:5e:52:00:03 to 21:ff:ac:16:5e:52:00:03
Num. of WWNs:: Configured: 256 Allocated:
Block Allocation Status: FREE
Example 30-16 Displays the WWN for a Specific Switch
switch# show wwn switch
Switch WWN is 20:00:ac:16:5e:52:00:00

Link Initialization WWN Usage

Exchange Link Protocol (ELP) and Exchange Fabric Protocol (EFP) use WWNs during link
initialization. The usage details differ based on the Cisco NX-OS software release.
Both ELPs and EFPs use the VSAN WWN by default during link initialization. However, the ELP usage
changes based on the peer switch's usage:
•
•
As of Cisco SAN-OS Release 2.0(2b), the ELP is enhanced to be compliant with FC-SW-3.
Note
Cisco MDS 9000 Family CLI Configuration Guide
30-10
Displaying WWN Information, page 30-10
Link Initialization WWN Usage, page 30-10
Configuring a Secondary MAC Address, page 30-11
Type 1 WWNs: Configured:
Types 2 & 5 WWNs: Configured: 524288 Available: 450560 (85%) Resvd.: 73728
Alarm Status:
If the peer switch ELP uses the switch WWN, then the local switch also uses the switch WWN.
If the peer switch ELP uses the VSAN WWN, then the local switch also uses the VSAN WWN.
64 Available:
1760 Available:
Type1: NONE Types 2&5:
0 Available: 256
Chapter 30 Advanced Features and Concepts
48 (75%) Resvd.: 16
1760 (100%)
NONE
OL-18084-01, Cisco MDS NX-OS Release 4.x
30-14 to