HP Surestore 64 FW 05.01.00 and SW 07.01.00 Director 2/64 Installation Guide ( - Page 92
Rerouting Delay, E_D_TOV, Con Fabric Parameters, Suppress RSCNs on Zone Set Activations
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Installing and Configuring the Director 2/64 Rerouting Delay Placing a check mark in the check box to the left of the Rerouting Delay option enables rerouting delay. This option is only applicable if the configured director is in a multi-switch fabric. The default state is enabled. Enabling the rerouting delay ensures that frames are delivered in order through the fabric to their destination. If there is a change to the fabric topology that creates a new path (for example, a new director is added to the fabric), frames may be routed over this new path if its hop count is less than a previous path with a minimum hop count. This may result in frames being delivered to a destination out of order since frames sent over the new, shorter path may arrive ahead of older frames still in route over the older path. If rerouting delay is enabled, traffic ceases in the fabric for the time specified in the E_D_TOV field of the Configure Fabric Parameters dialog box. This delay allows frames sent on the old path to exit to their destination before new frames begin traversing the new path. Note: This option is required if Enterprise Fabric Mode (optional SANtegrity binding feature) is enabled. Domain RSCNs Domain register for state change notifications (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. Note that this option is required if Enterprise Fabric Mode (optional SANtegrity binding feature) is enabled. Suppress RSCN's 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 is selected, 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 checkmark. 92 Director 2/64 Installation Guide