Verifying The Rscn Timer Configuration; Rscn Timer Configuration Distribution; Enabling Rscn Timer Configuration Distribution - Cisco Nexus 5000 Series Configuration Manual

RSCN
Command or Action
Step 5
switch(config)# rscn commit vsan vsan-id

Verifying the RSCN Timer Configuration

You verify the RSCN timer configuration using the show rscn event-tov vsan command. The following
example shows how to clear the RSCN statistics for VSAN 10:
switch# show rscn event-tov vsan 10
Event TOV : 1000 ms

RSCN Timer Configuration Distribution

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) infrastructure alleviates this situation by automatically distributing the
RSCN timer 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.
All configuration commands are not distributed. Only the rscn event-tov tov vsan vsan command is
Note
distributed.
Only the RSCN timer configuration is distributed.
Caution
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.
For additional information, refer to Using Cisco Fabric Services in the Cisco Nexus 5000 Series System
Management Configuration Guide.

Enabling RSCN Timer Configuration Distribution

To enable RSCN timer configuration distribution, perform this task:
SUMMARY STEPS
1. switch# configuration terminal
2. switch(config)# rscn distribute
3. switch(config)# no rscn distribute
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
170
Managing FLOGI, Name Server, FDMI, and RSCN Databases
Purpose
Commits the RSCN timer configuration to be distributed to the
switches in the specified VSAN.
OL-xxxxx-xx