Allied Telesis AT-S79 - Manual (Page 56)

Chapter 3: Basic Switch Parameters
56 Section I: Using the Menus Interface
4. To display the statistics of the next port, type N for Next.
The statistics for the next port in the sequence is displayed. For
example, if port 2 statistics were displayed, pressing N displays the
statistics for port 3.
5. To display the statistics of the previous port, type P for Previous.
The statistics for the previous port in the sequence is displayed. For
example, if port 6 statistics were displayed, pressing P displays the
statistics for port 5.
6. To view the statistics for the port since the switch has been running,
type U for Since Up.
7. To clear the counters on the port and return them to 0, type R for
Reset.
8. To stop a screen refresh, type T for Stop refresh.
The information in the Statistics Menu is for viewing purposes only.
The statistics are defined below:
Total RX Bytes
Number of bytes received on the port.
Total RX Packets
Number of packets received on the port.
Good Broadcast
Number of valid broadcast packets received on the port.
Good Multicast
Number of valid multicast packets received on the port.
CRC/Align Errors
Number of packets with a cyclic redundancy check (CRC) error but
with the proper length (64-1518 bytes) received on the port.
Undersize Packets
Number of packets that were less than the minimum length specified
by IEEE 802.3 (64 bytes including the CRC) received on the port.
Oversize Packets
Number of packets exceeding the maximum length specified by IEEE
802.3 (1518 bytes including the CRC) received on the port.
Fragments
Number of undersized packets, packets with alignment errors, and
packets with FCS errors (CRC errors) received on the port.
Jabbers
Number of electrical signal errors detected on the port.