About Autoreconfiguring Merged Fabrics; Enabling Autoreconfiguration - Cisco Nexus 5000 Series Configuration Manual

Configuring Domain Parameters
DETAILED STEPS
Command or Action
Step 1
switch# configuration terminal
Step 2
switch(config)# interface fc slot/port
Step 3 switch(config-if)# fcdomain rcf-reject vsan vsan-id
Step 4 switch(config-if)# no fcdomain rcf-reject vsan
vsan-id

About Autoreconfiguring Merged Fabrics

By default, the autoreconfigure option is disabled. When you join two switches belonging to two different
stable fabrics that have overlapping domains, the following situations can occur:
• If the autoreconfigure option is enabled on both switches, a disruptive reconfiguration phase is started.
• If the autoreconfigure option is disabled on either or both switches, the links between the two switches
The autoreconfigure option takes immediate effect at runtime. You do not need to restart the fcdomain. If a
domain is currently isolated due to domain overlap, and you later enable the autoreconfigure option on both
switches, the fabric continues to be isolated. If you enabled the autoreconfigure option on both switches before
connecting the fabric, a disruptive reconfiguration (RCF) will occur. A disruptive reconfiguration may affect
data traffic. You can nondisruptively reconfigure the fcdomain by changing the configured domains on the
overlapping links and eliminating the domain overlap.

Enabling Autoreconfiguration

To enable automatic reconfiguration in a specific VSAN (or range of VSANs), perform this task:
SUMMARY STEPS
1. switch# configuration terminal
2. switch(config)# fcdomain auto-reconfigure vsan vsan-id
3. switch(config)# no fcdomain auto-reconfigure vsan vsan-id
DETAILED STEPS
Command or Action
Step 1 switch# configuration terminal
OL-xxxxx-xx
become isolated.
Purpose
Enters configuration mode.
Configures the specified interface.
Enables the RCF filter on the specified interface in the
specified VSAN.
Disables (default) the RCF filter on the specified interface
in the specified VSAN.
Purpose
Enters configuration mode.
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
Information About Fibre Channel Domains
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