Configuring The Rscn Timer; Verifying The Rscn Timer Configuration - Cisco N5010P-N2K-BE Software Configuration Manual

Chapter 41 Managing FLOGI, Name Server, FDMI, and RSCN Databases
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m

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. See the
Note
Configuration Distribution" section on page
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:
Command
Step 1
switch# configuration terminal
switch(config)#
Step 2
switch(config)# rscn distribute
Step 3
switch(config)# rscn event-tov timeout vsan
vsan-id
switch(config)# no rscn event-tov timeout
vsan vsan-id
Step 4
switch(config)# rscn commit vsan vsan-id
In this example the event time-out value is set to 300 milliseconds for VSAN 12.
switch# rscn event-tov 300 vsan 12

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
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41-8.
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.
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
RSCN
"RSCN Timer
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