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
33-14
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 33 Configuring Domain Parameters
FC IDs
•
The volatile cache stores up to 4000 entries of WWN to FC ID binding. If this cache is full, a new
(more recent) entry overwrites the oldest entry in the cache. In this case, the corresponding WWN
to FC ID association for the oldest entry is lost.
•
N ports receive the same FC IDs if disconnected and reconnected to any port within the same switch
(as long as it belongs to the same VSAN).
This section describes configuring FC IDs and includes the following topics:
•
About Persistent FC IDs, page 33-14
•
Enabling the Persistent FC ID Feature, page 33-14
•
Persistent FC ID Configuration Guidelines, page 33-15
•
Configuring Persistent FC IDs, page 33-15
•
About Unique Area FC IDs for HBAs, page 33-16
•
Configuring Unique Area FC IDs for an HBA, page 33-16
•
About Persistent FC ID Selective Purging, page 33-17
•
Purging Persistent FC IDs, page 33-18
About Persistent FC IDs
When persistent FC IDs are enabled, the following occurs:
•
The current FC IDs in use in the fcdomain are saved across reboots.
•
The fcdomain automatically populates the database with dynamic entries that the switch has learned
about after a device (host or disk) is plugged into a port interface.
Note
If you connect to the switch from an AIX or HP-UX host, be sure to enable the persistent FC ID feature
in the VSAN that connects these hosts.
Note
When persistent FC IDs are enabled, FC IDs cannot be changed after a reboot. FC IDs are enabled by
default, but can be disabled for each VSAN.
A persistent FC ID assigned to an F port can be moved across interfaces and can continue to maintain
the same persistent FC ID.
Enabling the Persistent FC ID Feature
To enable the persistent FC ID feature, perform this task:
Command
Purpose
Step 1
switch#
configuration terminal
Enters configuration mode.
Step 2
switch(config)#
fcdomain fcid persistent vsan
vsan-id
FCID(s) persistent feature is enabled.
Activates (default) persistency of FC
IDs in the specified VSAN.
switch(config)#
no fcdomain fcid persistent vsan
vsan-id
Disables the FC ID persistency feature
in the specified VSAN.
Summary of Contents for N5010P-N2K-BE
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