HP StorageWorks MSA 2/8 HP StorageWorks Fabric OS 3.X Document Addendum (AA-RW - Page 167
Virtual Channel Settings, Disable Translative Mode, Switch PID Format, Per-Frame Route Priority
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Fabric OS reference guide Note: VC encoded address mode cannot be set in security mode. When this mode is set, security mode cannot be enabled. Disable Translative Mode The setting is relevant only if VC encoded address mode is also set. This feature, when set, disables translative addressing to achieve explicit address compatibility with some first-generation switches. Set this feature only if hardware or software systems are attached to the fabric that explicitly rely on a specific frame address format. Switch PID Format The setting is relevant only if VC encoded address mode is not set: ■ 0 Native PID format (16 based, 16 port format), for fabrics with legacy low-count-port switches ■ 1 Core PID format (0 based, 256 port format), preferred mode for mixed fabrics with legacy and new switches ■ 2 Extended-edge PID format (16 based, 256 port format), used in mixed fabrics with legacy and new switches to avoid rebooting host systems when static PID binded is used If VC encoded address mode is not set, the default setting is 1. Note: The configdefault command does not change switch PID format. Per-Frame Route Priority In addition to the eight virtual channels used in frame routing priority, support also is available for per-frame-based prioritization when this value it set. When set, the virtual channel ID is used with a frame header to form the final virtual channel ID. Long-Distance Fabric When this mode is set, ISLs in a fabric can be up to 100 km. The exact distance is determined by the per-port configuration on the E_Ports of each ISL. Both E_Ports in an ISL must be configured to run the same long-distance level; otherwise, the fabric segments. The Extended Fabrics license is required to set this mode. Virtual Channel Settings The switch provides the ability to tune the switch in a specific application by configuring the parameters for the switch's eight virtual channels. The first two virtual channels are reserved for the switch's internal functions and are not user configurable. Fabric OS 3.x Document Addendum 167