Motorola WS5100 Series Reference Manual page 99

Packets In
Packets In Dropped
Packets In Error
Bytes Out
Packets Out
Packets Out Dropped
Packets Out Error
3. Click the Details
information, see
4. Click the Graph
more information, see
4.4.2.1 Viewing Virtual Interface Statistics
To view detailed virtual interface statistics:
1. Select a virtual interface from the Statistics tab
Displays the number of packets coming into the interface (including packets
dropped, error packets, etc.)
Displays the number of dropped packets coming into the interface. Packets are
dropped if:
1. The input queue for the hardware device/software module handling the
interface definition is
saturated/full.
2. Overruns occur when the interface receives packets faster than it can
transfer them to a buffer.
Displays the number of error packets coming into the interface.
• Runt frames — Packets shorter than the minimum Ethernet frame length (64
bytes).
• CRC errors — The Cyclical Redundancy Check (CRC) is the 4 byte field at the
end of every frame the receiving station uses to interpret if the frame is valid.
If the CRC value computed by the interface does not match the value at the end
of frame, it is considered as a CRC error.
• Late collisions — A late collision is any collision that occurs after the first 64
octets of data have been sent by the sending station. Late collisions are not
normal and are usually the result of out of specification cabling or a
malfunctioning device.
• Misaligned frames — A misaligned frame is a frame that somehow gets out of
sync with the receiving station's receive clock recovery circuit. Misalignment is
reported if the frame ends with a CRC error and extra bits are also detected.
Displays the number of bytes going out on the interface.
Displays the number of packets going out on the interface.
Displays the number of dropped packets going out of the interface, due to
saturated output queues assigned to the interface processor or the physical
device/software module. Packets can be dropped due to collisions as well.
Displays the number of error packets going out of the interface, including frame
forming errors or malformed packets transmitted over the interface.
button to view packet level statistics of any user defined interface. For more
Viewing Virtual Interface Statistics on page
button to view a graphical representation of the switch virtual interface statistics. For
Viewing the Virtual Interface Statistics Graph on page
Network Setup
4-17.
4-19.
4-17