Name Server Proxy; About Registering Name Server Proxies; About Rejecting Duplicate Pwwns - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Name Server Proxy

Name Server Proxy
The name server functionality maintains a database containing the attributes for all hosts and storage devices
in each VSAN. Name servers allow a database entry to be modified by a device that originally registered the
information.
The proxy feature is useful when you need to modify (update or delete) the contents of a database entry that
was previously registered by a different device.

About Registering Name Server Proxies

All name server registration requests come from the same port whose parameter is registered or changed. If
it does not, then the request is rejected.
This authorization enables WWNs to register specific parameters for another node.
Registering Name Server Proxies
To register the name server proxy, perform this task:
Procedure
Step 1
Step 2

About Rejecting Duplicate pWWNs

You can prevent malicious or accidental log in using another device's pWWN by enabling the
reject-duplicate-pwwn option. If you disable this option, these pWWNs are allowed to log in to the fabric and
replace the first device in the name server database.
Rejecting Duplicate pWWNs
To reject duplicate pWWNs, perform this task:
Procedure
Step 1
Step 2
Step 3
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
594
Command or Action
switch# configuration terminal
switch(config)#fcns proxy-port wwn-id vsan
vsan-id
Command or Action
switch# configuration terminal
switch(config)# fcns
reject-duplicate-pwwn vsan vsan-id
switch(config)# no fcns
reject-duplicate-pwwn vsan vsan-id
Managing FLOGI, Name Server, FDMI, and RSCN Databases
Purpose
Enters configuration mode.
Configures a proxy port for the specified
VSAN.
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).
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