edge switch 2/32 product manager user guide

2–34 edge switch 2/32 product manager user guide
Monitoring and Managing the Switch
Class 3 Statistics
The Class 3 Statistics table includes:
• Received Frames — The number of Class 3 frames received by this F_Port from
its attached N_Port.
• Transmitted Frames — The number of Class 3 frames transmitted by the F-Port
to its attached N_Port.
• Discarded Frames — The number of Class 3 frames discarded, including
multicast frames with bad 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 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 Received — The number of four-byte words received.
• Four Byte Words Transmitted — 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 displays to indicate a link incident, or a blinking red and yellow
diamond displays to indicate a port failure.
• Sync losses — A loss of synchronization was detected because the attached
device was reset or disconnected from the port. At the Hardware view, a yellow
triangle displays to indicate a link incident.
• Signal losses — A loss of signal was detected because the attached device was
reset or disconnected from the port. At the Hardware view, a yellow triangle
displays to indicate a link incident.
• 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.