Installing and Configuring the Edge Switch 2/32
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 switch 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 High Availability Fabric Manager (HAFM) 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 High Availability Fabric Manager (HAFM) is enabled.
Operating Mode
NOTE: To change this value, you must first set the switch offline. Select Set Online State from the Maintenance menu to display the Set Online State dialog box, then click the Set Offline button. Be sure to set the switch back online after you change this value.
Click either the S/390 or Open Systems radio buttons:
•If the FICON Management Server feature is enabled, the default mode will be S/390. The operating mode cannot be changed to Open Systems with the FICON Management Server feature enabled. Typically, S/390 mode is used when attaching an IBM S/390 Parallel Enterprise or IBM zSeries server to the switch and implementing inband switch management through a Fibre Connection (FICON) channel.
edge switch 2/32 installation guide |
