C H A P T E R 17 Managing Flogi, Name Server, Fdmi, And Rscn Databases; Configuring The Name Server Proxy Feature; Displaying Name Server Database Entries; Displaying Fdmi - Cisco DS-C9216I-K9 Configuration Manual

Configuring the Name Server Proxy Feature

Configuring the Name Server Proxy Feature
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 which originally
registered the information.
The proxy feature is useful when you wish to modify (update or delete) the contents of a database entry
that was previously registered by a different device.
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.

Displaying 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 FDMI

SAN-OS 1.3(x) provides support for the Fabric-Device Management Interface (FDMI) functionally, as
described in the FC-GS-4 standard. FDMI enables management of devices such as Fibre Channel Host
Bus Adaptors (HBAs) through inband communications. This addition complements the existing Fibre
Channel name server and management server functions.
Using the FDMI functionality, the SAN-OS software can extract the following management information
about attached HBAs and host operating systems without installing proprietary host agents:
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All FDMI entries are stored in persistent storage and are retrieved when the FDMI process is started.

Displaying RSCN Information

The Registered State Change Notification (RSCN) is a Fibre Channel service that informs hosts about
changes in the fabric. Hosts can receive this information by registering with the fabric controller
(through SCR). These notifications provide a timely indication of one or more of the following events:
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Cisco MDS 9000 Fabric Manager Switch Configuration Guide
17-2
Manufacturer, model, and serial number
Node name and node symbolic name
Hardware, driver, and firmware versions
Host operating system (OS) name and version number
Disks joining or leaving the fabric.
A name server registration change.
A new zone enforcement.
IP address change
Chapter 17 Managing FLOGI, Name Server, FDMI, and RSCN Databases
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