Procedure
Purpose
Command or Action
Enters global configuration mode.
configure terminal
Example:
switch# configure terminal
switch(config)#
Step 1
Suppresses transmission of domain format
SW-RSCNs for the specified VSAN.
rscn suppress domain-swrscn vsan vsan-id
Example:
switch(config)# rscn suppress domain-swrscn
vsan 250
Step 2
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.
This 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. When a timeout occurs, all the events are
dequeued and coalesced RSCNs are sent to registered users. The default timer values minimize the number
of coalesced RSCNs that are 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 RSCN timer value in your network to the
default value. Failure to do so will disable the links across your VSANs and other devices.
Note
You can configure the RSCN timer.
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Managing FLOGI, Name Server, FDMI, and RSCN Databases
RSCN
