CHAPTER 9
Managing FLOGI, Name Server, FDMI, and RSCN
Databases
This chapter describes the fabric login (FLOGI) database, the name server features, the Fabric-Device
Management Interface, and Registered State Change Notification (RSCN) information provided in the Cisco
MDS 9000 Family. It includes the following sections:
• About FLOGI, on page 209
• Name Server , on page 213
• FDMI, on page 219
• Displaying FDMI, on page 219
• VMID, on page 221
• RSCN , on page 228
• Default Settings, on page 237
• Enabling Port Pacing , on page 238
About FLOGI
In a Fibre Channel fabric, each host or disk requires an Fibre Channel ID. Use the show flogi database
command to verify if a storage device is displayed in the FLOGI table as in the next section. If the required
device is displayed in the FLOGI table, the fabric login is successful. Examine the FLOGI database on a
switch that is directly connected to the host HBA and connected ports.
FLOGI Scale Optimization
The FLOGI scale optimization feature enables MDS switches to support an increased number of FLOGIs for
module and chassis. The FLOGI scale optimization preloads the routing information for devices after a switch
or module reload. This can speed up the Accepts to FLOGIs. This feature is supported on all MDS switches,
except Cisco MDS 9250i Multiservice Fabric Switch and Cisco MDS 9148S 16G Multilayer Fabric Switch,
and is enabled by default, starting from Cisco MDS NX-OS Release 8.1(1). As of Cisco MDS Release 8.2(2),
the higher FLOGI scale limits are published only for MDS 9718. For more information see the "Cisco MDS
NX-OS Configuration Limits" documentation for the FLOGI limits.
Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
209
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