Device/Board/Port/Counters Screen Fields - Cabletron Systems IRM-3 User Manual

Chapter 4: Local Management

4.4.2 Device/Board/Port/Counters Screen Fields

This section briefly describes the Device/Board/Port Counters screen
fields. Counter information is displayed separately on the screen for the
whole device (IRM3), the selected board, and the selected port.
Bytes Received
Displays the number of bytes received.
Packets
Displays the total number of packets received or transmitted.
Errors
Displays the number of errors detected.
Receive Collisions
Displays the number of receive mode collisions experienced by the
device, board, or port.
Transmit Collisions
Displays the number of transmit mode collisions experienced by the
device, board, or port.
Out of Window Collisions
Displays the number of collisions out of the standard collisions window
(51.2 s) due to a network problem, such as the network being too long,
cable failure during transmission, or carrier sense violation by a node
(node transmitting at will).
Runt Packets
Displays the number of runt packets the device (IRM3), board, and port
have received from the network. A runt packet is one that is less than the
minimum Ethernet frame of 64 bytes not including preamble. The
originating station is the source of runts, which are caused by the packet
being cut off by additional traffic or not sensing the carrier, or by a
malfunctioning transceiver.
No Resources Available
Displays the number of times the IRM3 ran out of buffer space and was
not able to provide management statistics on each packet. The packets are
not lost, but some packet statistics may not be available.
Page 4-12 IRM3 User's Guide