HP StorageWorks 16-EL HP StorageWorks SAN Switch 2/16 Fabric OS V3.1.2 Release - Page 14

New Command in v3.1.2 Basic Statistics Basic statistical report variables give an indication of ISL congestion along the path. They include the following: B/x Bytes per second. Txcrdz The time in milliseconds that the port has been prevented from transmitting frames due to lack of buffer-to-buffer credit. This is an indication of downstream congestion. Note that other commands (portShow, for example) may express this value in units other than milliseconds. Extended Statistics Extended statistics report variables of general interest. They include the following: F/x Frames per second. Words Total number of four-byte Fibre Channel words. Frames Total number of frames. Errors Total number of errors that might cause a frame to be received incorrectly. This includes CRC errors, bad-EOF errors, frame-truncated errors, frame-too-short errors, and encoding errors inside a frame. Reverse Path In general, the path from port A on switch X to port B on switch Y might be different from the path from port B to port A. The difference could be in the links traversed between the same sequence of switches, or the reverse path might even involve different switches. The trace reverse path option allows the user to determine both routing and statistical information for the reverse path, in addition to those for the direct path. Source Route The source route option allows the user to specify a sequence of switches or ports (or areas) that the pathInfo frame must follow to reach the destination. Therefore, the path might be different from the one the actual traffic will take from source to destination. 14 SAN Switch 2/16 Fabric OS 3.1.2 Release Notes