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 19-5 RSCN Multi-PID
Step 3 Check the Enable check box.
Step 4 Click Apply Changes to save these changes, or click Undo Changes to cancel any unsaved changes.
Clearing RSCN Statistics
You can clear the counters and later view the counters for a different set of events. For example, you can
keep track of how many RSCNs or SW-RSCNs are generated on a particular event (such as ONLINE or
OFFLINE events). You can use these statistics to monitor responses for each event in the VSAN.
To clear the RSCN statistics for the specified VSAN, see the Cisco Nexus 5000 Series CLI Configuration
Guide.
RSCN Timer Configuration Distribution Using CFS
Because the timeout value for each switch is configured manually, a misconfiguration occurs when
different switches time out at different times. This means different N-ports in a network can receive
RSCNs at different times. Cisco Fabric Services (CFS) alleviates this situation by automatically
distributing configuration information to all switches in a fabric. This also reduces the number of
SW-RSCNs.
RSCN supports two modes, distributed and nondistributed. In distributed mode, RSCN uses CFS to
distribute configuration to all switches in the fabric. In nondistributed mode, only the configuration
commands on the local switch are affected.
Note All configuration commands are not distributed. Only the rscn event-tov tov vsan vsan command is
distributed.
The RSCN timer is registered with CFS during initialization and switchover. For high availability, if the
RSCN timer distribution crashes and restarts or a switchover occurs, it resumes normal functionality
from the state prior to the crash or switchover.