HP StorageWorks 2.32 Edge Switch - Manual (Page 67)

Edge Switch Element Manager user guide 67
Class 2 Statistics
The Class 2 Statistics table includes:
• Received Frames—The number of Class 2 frames received by this port from its attached port.
• Transmitted Frames—The number of Class 2 frames transmitted by this port to its attached
port.
• Busied Frames—The number of F_BSY frames generated by this F_Port against Class 2
frames. This situation can occur if frames are received before the switch completes initialization
or if the switch is servicing so many requests that it can not process a new request. The port
generates frames if the switch is not ready to accept commands. This may indicate temporary
congestion.
• Rejected Frames—The number of F_RJT frames generated by this F_Port against Class 2
frames.
These frames usually occur because of attached device errors. The device is expected to correct
the error based on the reject code, then retry its request. If the device is able to recover, there is
no cause for concern. If not, further troubleshooting may be necessary. There are no thresholds
for this value. Typically, this occurs because the destination is not available due to the device’s
action.
• Four-Byte Words Rx—The number of four-byte words received.
• Four-Byte Words Tx—The number of four-byte words transmitted.
Class 3 Statistics
The Class 3 Statistics table includes:
• Received Frames—The number of Class 3 frames received by this port from its attached port.
• Transmitted Frames—The number of Class 3 frames transmitted by this port to its attached
port.
• Discarded Frames—The number of Class 3 frames discarded, including multicast frames with
bad destination identifiers (D_IDs).
The switch increments this count when it discards a frame that cannot be routed. This occurs most
frequently when a destination becomes unavailable without the source realizing that the
destination is unavailable. There are no thresholds for this value. Typically, this occurs when the
destination is not available due to the destination device’s action.
• Four Byte Words Rx—The number of four-byte words received.
• Four Byte Words Tx—The number of four-byte words transmitted.
Error statistics
Port errors indicate that a port is not operating correctly. Use this data to isolate problems with port
and link operations. The statistics in this table include:
• Link failures—A link failure was recorded in response to a not-operational sequence (NOS),
protocol timeout, or port failure. At the Hardware view, a yellow triangle is displayed to indicate
a link incident, or a blinking red and yellow diamond is displayed to indicate a port failure.