HP StorageWorks 2.32 Edge Switch - Manual (Page 69)

Edge Switch Element Manager user guide 69
• Primitive sequence errors—An incorrect primitive sequence was received from the
attached device, indicating a Fibre Channel link-level protocol violation. At the Hardware View,
a yellow triangle displays to indicate a link incident.
• Discarded frames—A received frame could not be routed and was discarded because the
frame timed out (insufficient buffer-to-buffer credit) or the destination device was not logged into
the switch.
• Invalid transmission words—The number of times that the switch detected invalid
transmission words from the attached device. This indicates that a frame or primitive sequence
arrived at the switch’s port corrupted. This corruption can be due to the attached device
performing a reset, plugging or unplugging the link, bad optics at either end of the cable, a
bad cable, or a dirty or poor connection. Moving the connection around or replacing cables
can isolate the problem.
Some number of invalid transmission words are expected and acceptable. Invalid transmission
words within a frame are used to produce the bit-error threshold link incident. If one or more
invalid transmission words are detected in 12 separate 1.5-second samples within 5 minutes, a
bit-error threshold link incident is generated.
• CRC errors—A received frame failed a cyclic redundancy check (CRC) validation, indicating
that the frame arrived at the switch’s port corrupted. Frame corruption may be caused by
device disconnection, an optical transceiver failure at the device, a bad fiber-optic cable, or a
poor cable connection.
• Delimiter errors—The number of times that the switch detected an unrecognized
start-of-frame (SOF), an unrecognized end-of-frame (EOF) delimiter, or an invalid Class of
Service. This indicates that the frame arrived at the switch’s port corrupted. This corruption can
be due to plugging/unplugging the link, bad optics at either end of the cable, a bad cable, or
dirty or poor connections. Moving the connection around or replacing cables can isolate the
problem.
• Address ID errors—A received frame had an unavailable or invalid Fibre Channel
destination address, or an invalid Fibre Channel source address. This typically indicates that
the destination device is unavailable.
• Frames too short—A received frame exceeded the Fibre Channel frame maximum size or
was less than the Fibre Channel minimum size, indicating that the frame arrived at the switch’s
port corrupted. Frame corruption may be caused by device disconnection, an optical
transceiver failure at the device, a bad fiber-optic cable, or a poor cable connection.
Operational statistics
The following describes the Operational Statistics that display for a selected port:
• Offline sequences Rx—The number of offline sequence that the port has received.
• Offline sequences Tx—The number of offline sequence that the port has transmitted.
• Link resets Rx—The number of link reset protocol frames received by this port from the
attached device. The switch receives a link reset from an attached device if the device wishes to
initiate the link reset or recover from a link timeout.
• Link resets Tx—The number of link reset protocol frames received/transmitted by this port
from/to the attached device. The switch transmits a link reset to initiate the link reset protocol or