Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 41 Managing FLOGI, Name Server, FDMI, and RSCN Databases
RSCN
Configuring the multi-pid Option
To configure the multi-pid option, perform this task:
Suppressing Domain Format SW-RSCNs
A domain format SW-RSCN is sent whenever the local switch name or the local switch management IP
address changes. This SW-RSCN is sent to all other domains and switches over the ISLs. The remote
switches can issue GMAL and GIELN commands to the switch that initiated the domain format
SW-RSCN to determine what changed. Domain format SW-RSCNs can cause problems with some
non-Cisco SAN switches. For additional information, see the Cisco MDS 9000 Family Switch-to-Switch
Interoperability Configuration Guide, available at the following location:
http://www.cisco.com/en/US/docs/storage/san_switches/mds9000/interoperability/guide/intopgd.html
To suppress the transmission of these SW-RSCNs over an ISL, perform this task:
Note You cannot suppress transmission of port address or area address format RSCNs.
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.
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
Command Purpose
Step 1
switch# configuration terminal
switch(config)#
Enters configuration mode.
Step 2
switch(config)# rscn multi-pid vsan
vsan-id
Sends RSCNs in a multi-pid format for the specified
VSAN.
Command Purpose
Step 1
switch# configuration terminal
switch(config)#
Enters configuration mode.
Step 2
switch(config)# rscn suppress
domain-swrscn vsan vsan-id
Suppresses transmission of domain format SW-RSCNs
for the specified VSAN.