About Name Server Database Entries; Displaying Name Server Database Entries - Cisco Nexus 5000 Series Configuration Manual

Managing FLOGI, Name Server, FDMI, and RSCN Databases
SUMMARY STEPS
1. switch# configuration terminal
2. switch(config)# fcns reject-duplicate-pwwn vsan vsan-id
3. switch(config)# no fcns reject-duplicate-pwwn vsan vsan-id
DETAILED STEPS
Command or Action
Step 1 switch# configuration terminal
Step 2 switch(config)# fcns reject-duplicate-pwwn vsan
vsan-id
Step 3 switch(config)# no fcns reject-duplicate-pwwn vsan
vsan-id

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

The following example shows how to display the name server database for all VSANs:
switch# show fcns database
--------------------------------------------------------------------------
FCID
--------------------------------------------------------------------------
0x010000
0x010001
0x010002
0x010100
0x020000
0x020100
0x020200
OL-xxxxx-xx
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)
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
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).
(VENDOR) FC4-TYPE:FEATURE
scsi-fcp fc-gs
ipfc
scsi-fcp 250
scsi-fcp
ipfc
scsi-fcp
Name Server Proxy
165