3Com 3Com SuperStack 3 Switch 3800 Family, Руководство пользователя

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9-6 C
HAPTER
9: S
TATUS
M
ONITORING AND
S
TATISTICS
Port Errors
The Switch 3800 keeps track of errors for each port.
To view port error, type
show port <portlist> errors
The following port error information is collected by the Switch:
Link Status — The current status of the link. Options are:
■
Ready — The port is ready to accept a link.
■
Active — The link is present at this port.
Transmit Collisions (TX Coll) — The total number of collisions seen
by the port, regardless of whether a device connected to the port
participated in any of the collisions. This value will always be zero for a
full-duplex device
Transmit Late Collisions (TX Late) — The total number of collisions
that have occurred after the port’s transmit window has expired. This
value will always be zero for a full-duplex device.
Transmit Deferred Frames (TX Def) — The total number of frames
that were transmitted by the port after the first transmission attempt
was deferred by other network traffic.
Transmit Frames Lost (TX Lost) — The total number of frames that
were not completely transmitted by the port.
Transmit Errored Frames (TX Err) — The total number of frames that
were not completely transmitted by the port due to network errors,
such as late collisions or excessive collisions.
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 received by the port that were of longer than the supported
maximum length of 1522 bytes.
Receive Undersize Frames (RX Under) — The total number of
frames received by the port that were less than 64 bytes long.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM