Rejecting Duplicate Pwwns; About Name Server Database Entries; Displaying Name Server Database Entries - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Name Server Proxy
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

Rejecting Duplicate pWWNs

To reject duplicate pWWNs, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# fcns reject-duplicate-pwwn vsan 1
switch(config)# no fcns reject-duplicate-pwwn
vsan 1

About Name Server Database Entries

The name server stores name entries for all hosts in the FCNS database. The name server permits an Nx
port to register attributes during a PLOGI (to the name server) to obtain attributes of other hosts. These
attributes are deregistered when the Nx port logs out either explicitly or implicitly.
In a multiswitch fabric configuration, the name server instances running on each switch shares
information in a distributed database. One instance of the name server process runs on each switch.

Displaying Name Server Database Entries

Use the show fcns command to display the name server database and statistical information for a
specified VSAN or for all VSANs (see Examples
Example 27-5 Displays the Name Server Database
switch# show fcns database
--------------------------------------------------------------------------
FCID
--------------------------------------------------------------------------
0x010000
0x010001
0x010002
0x010100
0x020000
0x020100
0x020200
Example 27-6 Displays the Name Server Database for the Specified VSAN
switch# show fcns database vsan 1
VSAN 1:
--------------------------------------------------------------------------
FCID
--------------------------------------------------------------------------
0x030001
0x030101
0x030200
0xec0001
Cisco MDS 9000 Family CLI Configuration Guide
27-4
TYPE PWWN
N 50:06:0b:00:00:10:a7:80
N 10:00:00:05:30:00:24:63 (Cisco)
N 50:06:04:82:c3:a0:98:52 (Company 1)
N 21:00:00:e0:8b:02:99:36 (Company A)
N 21:00:00:e0:8b:08:4b:20 (Company A)
N 10:00:00:05:30:00:24:23 (Cisco)
N 21:01:00:e0:8b:22:99:36 (Company A)
TYPE PWWN
N 10:00:00:05:30:00:25:a3 (Cisco)
NL 10:00:00:00:77:99:60:2c (Interphase)
N 10:00:00:49:c9:28:c7:01
NL 21:00:00:20:37:a6:be:14 (Seagate)
Chapter 27 Managing FLOGI, Name Server, FDMI, and RSCN Databases
Purpose
Enters configuration mode.
Logs out devices when they log into the
fabric if the pWWNs already exist.
Overwrites the first device's entry in the
name server database with the new device
having the same pwwn (default).
27-5 to 27-8).
(VENDOR) FC4-TYPE:FEATURE
scsi-fcp fc-gs
ipfc
scsi-fcp 250
scsi-fcp
ipfc
scsi-fcp
(VENDOR) FC4-TYPE:FEATURE
ipfc
scsi-fcp
OL-18084-01, Cisco MDS NX-OS Release 4.x