Cisco Nexus 5000 Series Switch Fabric Manager Software Configuration Guide, NX-OS 4.0 (OL-16598-01, June 2008)

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Nexus 5000 Series Switch Fabric Manager Software Configuration Guide
OL-16598-01
Chapter 19 Managing FLOGI, Name Server, FDMI, and RSCN Databases
RSCN
Figure 19-4 RSCN Statistics
About the multi-pid Option
If the RSCN multi-pid option is enabled, then RSCNs generated to the registered Nx ports may contain
more than one affected port IDs. In this case, zoning rules are applied before putting the multiple affected
port IDs together in a single RSCN. By enabling this option, you can reduce the number of RSCNs. For
example, you have two disks (D1, D2) and a host (H) connected to switch 1. Host H is registered to
receive RSCNs. D1, D2 and H belong to the same zone. If disks D1 and D2 are online at the same time,
one of the following actions applies:
• The multi-pid option is disabled on switch 1— Two RSCNs are generated to host H: one for the
disk D1 and another for disk D2.
• The multi-pid option is enabled on switch 1—A single RSCN is generated to host H, and the RSCN
payload lists the affected port IDs (in this case, both D1 and D2).
Note Some Nx ports may not support multi-pid RSCN payloads. If so, disable the RSCN multi-pid option.
Configuring the multi-pid Option
To configure the multi-pid option using Fabric Manager, perform this task:
Step 1 Expand a fabric, expand a VSAN, and then choose Advanced.
You see the VSAN advanced configuration in the Information pane.
Step 2 Click the RSCN Multi-PID tab.
You see the RSCN Multi-PID pane as shown in Figure 19-5.