User guide

11-10 B
LACK
D
IAMOND
U
SER
G
UIDE
S
TATUS
M
ONITORING AND
S
TATISTICS
P
ORT
E
RRORS
The BlackDiamond keeps track of errors for each port.
To view port transmit errors, use the following command:
show port <slot:portlist> txerrors
The following port transmit error information is collected by the system:
• 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.
• Transmit Late Collisions (TX Late) — The total number of collisions that have
occurred after the port’s transmit window has expired.
• 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 Errored Frames (TX Err) — The total number of frames that were not
completely transmitted by the port because of network errors (such as late collisions
or excessive collisions).
To view port receive errors, use the following command:
show port <slot:portlist> rxerrors
The following port receive error information is collected by the switch:
• 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 greater than the supported maximum length of 1,522 bytes.
• Receive Undersize Frames (RX Under) — The total number of frames received by
the port that were less than 64 bytes long.
• Receive Jabber Frames (RX Jab) — The total number of frames received by the port
that was of greater than the support maximum length and had a Cyclic Redundancy
Check (CRC) error.