HP StorageWorks 2.12 Edge Switch - Manual (Page 104)

Configuring the Switch
104 Edge Switch Element Manager User Guide
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 (HBAs) 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 HBAs may log out, then log back into the fabric when they receive
an RSCN, thereby disrupting Fibre Channel traffic.
Note: This option is required if Enterprise Fabric Mode (optional SANtegrity Binding
feature) is enabled.
Suppress Zoning 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 check box
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.