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

Send feedback to [e-mail]
33-16
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 33 Configuring Domain Parameters
FC IDs
About Unique Area FC IDs for HBAs
Note Only read this section if the Host Bus Adapter (HBA) port and the storage port are connected to the same
switch.
Some HBA ports require a different area ID than for the storage ports when they are both connected to
the same switch. For example, if the storage port FC ID is 0x6f7704, the area for this port is 77. In this
case, the HBA port’s area can be anything other than 77. The HBA port’s FC ID must be manually
configured to be different from the storage port’s FC ID.
Cisco Nexus 5000 Series switches facilitate this requirement with the FC ID persistence feature. You can
use this feature to preassign an FC ID with a different area to either the storage port or the HBA port.
Configuring Unique Area FC IDs for an HBA
The following task uses an example configuration with a switch domain of 111(6f hex). The server
connects to the switch over FCoE. The HBA port connects to interface vfc20/1 and the storage port
connects to interface fc2/3 on the same switch.
To configure a different area ID for the HBA port, perform this task:
Step 1 Obtain the port WWN (Port Name field) ID of the HBA using the show flogi database command.
switch# show flogi database
------------------------------------------------------------------------------------------
INTERFACE VSAN FCID PORT NAME NODE NAME
------------------------------------------------------------------------------------------
vfc10/1 3 0x6f7703 50:05:08:b2:00:71:c8:c2 50:05:08:b2:00:71:c8:c0
fc2/3 3 0x6f7704 50:06:0e:80:03:29:61:0f 50:06:0e:80:03:29:61:0f
Note Both FC IDs in this setup have the same area 77 assignment.
Step 2 Shut down the HBA interface in the Cisco Nexus 5000 Series switch.
switch# configuration terminal
switch(config)# interface vfc20/1
switch(config-if)# shutdown
switch(config-if)# end
switch#
Step 3 Verify that the FC ID feature is enabled using the show fcdomain vsan command.
switch# show fcdomain vsan 1
...
Local switch configuration information:
State: Enabled
FCID persistence: Disabled
If this feature is disabled, continue with this procedure to enable the persistent FC ID.
If this feature is already enabled, skip to Step 5.
Step 4 Enable the persistent FC ID feature in the Cisco Nexus 5000 Series switch.
switch# configuration terminal
switch(config)# fcdomain fcid persistent vsan 1