Configuring The Rscn Timer; Verifying The Rscn Timer Configuration - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Configuring the RSCN Timer

The following example shows how to clear the RSCN statistics for the specified VSAN:
switch# clear rscn statistics vsan 1
After clearing the RSCN statistics, you can view the cleared counters by entering the show rscn statistics
command:
switch# show rscn statistics vsan 1
Configuring the RSCN Timer
RSCN maintains a per VSAN event list queue, where the RSCN events are queued as they are generated.
When the first RSCN event is queued, a per VSAN timer starts. Upon time-out, all the events are dequeued
and coalesced RSCNs are sent to registered users. The default timer values minimize the number of coalesced
RSCNs sent to registered users. Some deployments require smaller event timer values to track changes in the
fabric.
The RSCN timer value must be the same on all switches in the VSAN.
Note
Before performing a downgrade, make sure that you revert the RCSN timer value in your network to the
Note
default value. Failure to do so will disable the links across your VSANs and other devices.
To configure the RSCN timer, perform this task:
Procedure
Step 1
Step 2
Step 3
Step 4
Step 5

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
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
598
Command or Action
switch# configuration terminal
switch(config)# rscn distribute
switch(config)# rscn event-tov timeout
vsan vsan-id
switch(config)# no rscn event-tov
timeout vsan vsan-id
switch(config)# rscn commit vsan
vsan-id
Managing FLOGI, Name Server, FDMI, and RSCN Databases
Purpose
Enters configuration mode.
Enables RSCN timer configuration distribution.
Sets the event time-out value in milliseconds for the
specified VSAN. The range is 0 to 2000 milliseconds.
Setting a zero (0) value disables the timer.
Reverts to the default value (2000 milliseconds for
Fibre Channel VSANs).
Commits the RSCN timer configuration to be
distributed to the switches in the specified VSAN.
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