About Domain Restart - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Chapter 17 Configuring Domain Parameters
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
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About Domain Restart

Fibre Channel domains can be started disruptively or nondisruptively. If you perform a disruptive restart,
reconfigure fabric (RCF) frames are sent to other switches in the fabric and data traffic is disrupted on
all the switches in the VSAN (including remotely segmented ISLs). If you perform a nondisruptive
restart, build fabric (BF) frames are sent to other switches in the fabric and data traffic is disrupted only
on the switch.
If you are attempting to resolve a domain ID conflict, you must manually assign domain IDs. A
disruptive restart is required to apply most configuration changes–including manually assigned domain
IDs. Non-disruptive domain restarts are acceptable only when changing a preferred domain ID into a
static one (and the actual domain ID remains the same).
Note A static domain is specifically configured by the user and may be different from the runtime domain. If
the domain IDs are different, the runtime domain ID changes to take on the static domain ID after the
next restart, either disruptive or non-disruptive.
If a VSAN is in interop mode, you cannot restart the fcdomain for that VSAN disruptively.
Tip
You can apply most of the configurations to their corresponding runtime values. Each of the following
sections provide further details on how the fcdomain parameters are applied to the runtime values.
The fcdomain restart command applies your changes to the runtime settings. Use the disruptive option
to apply most of the configurations to their corresponding runtime values, including preferred domain
IDs (see the
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Restarting a Domain, page 17-4
About Domain Manager Fast Restart, page 17-4
Enabling Domain Manager Fast Restart, page 17-4
About Switch Priority, page 17-5
Configuring Switch Priority, page 17-5
About fcdomain Initiation, page 17-5
Disabling or Reenabling fcdomains, page 17-5
Configuring Fabric Names, page 17-6
About Incoming RCFs, page 17-6
Rejecting Incoming RCFs, page 17-6
About Autoreconfiguring Merged Fabrics, page 17-6
Enabling Autoreconfiguration, page 17-7
"About Domain IDs" section on page 17-7).
Cisco MDS 9000 Family CLI Configuration Guide
Fibre Channel Domains
17-3