User manual

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McDATA Sphereon™ 4500 Fabric Switch Product Manager User Manual
Configuring the Switch
Domain RSCNs Use this check box to enable domain register for state change
notifications (domain RSCNs). Domain RSCNs are sent between end
devices in a fabric to provide additional connection information to
host bus adapters (HBA) and storage devices. As an example, this
information might be that a logical path has been broken because of a
physical event, such as a fiber optic cable being disconnected from a
port. Consult with your HBA and storage device vendor to determine
if enabling Domain RSCNs will cause problems with your HBA or
storage products. For example, some hardware bus adapters (HBAs)
may log out, then log back into the fabric when they receive an
RSCN, thereby disrupting Fibre Channel traffic.
Note that this option is required if Enterprise Fabric Mode (optional
SANtegrity Binding feature) is enabled.
Suppress RSCNs on
Zone Set Activations
Fabric format domain register for state change notifications (RSCNs)
are sent to ports on the switch following any change to the fabric’s
active zone set. These changes include activating and deactivating the
zone set, or enabling and disabling the default zone. When the
Suppress RSCNs on Zone Set Activations checkbox contains a check,
fabric format RSCNs are not sent for zone changes to the attached
devices on the switch. Click the check box to remove or add a check.
In general, RSCNs should not be suppressed, so that attached devices
can receive notification of zoning changes in the fabric. However,
some HBAs may log out, then log back into the fabric when they
receive an RSCN, thereby disrupting Fibre Channel traffic. Consult
with your HBA and storage device vendor to determine if zone set
change RSCNs will cause problems with your HBA or storage
products.