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C H A P T E R 19 Status Monitoring and Statistics
407
To view port receive errors, use this command:
show ports <portlist> rxerrors
The following port receive error information is collected:
• Receive Bad CRC Frames (Rx CRC)—The total number of
frames received by the port that were of the correct length, but
contained a bad FCS value.
• Receive Oversize Frames (Rx Over)—The total number of good
frames the port received that were longer than the supported
maximum length of 1,522 bytes. Ports with jumbo frames enabled
do not increment this counter.
• Receive Undersize Frames (Rx Under)—The number of frames
the port received that were less than 64 bytes long.
• Receive Fragmented Frames (Rx Frag)—The total number of
frames the port received that were of incorrect length and
contained a bad FCS value.
• Receive Jabber Frames (Rx Jab)—The total number of frames
the port received, greater than the support maximum length and
that had a Cyclic Redundancy Check (CRC) error.
• Receive Alignment Errors (Rx Align)—The total number of
frames received by the port that occurs if a frame has a CRC error
and does not contain an integral number of octets.
• Receive Frames Lost (Rx Lost)—The total number of frames
that were received by the port that were lost due to buffer
overflow in the switch.
Port Monitoring Display Keys
Table 19.2 describes the keys used to control the displays that
appear when you issue any of the
show port commands.
Table 19.2: Port Monitoring Display Keys
Key(s) Description
U Displays the previous page of ports.
D Displays the next page of ports.