Hirschmann BAT 11b, Management Manual

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Statistics
91
BAT 11b
Release 1.0 03/04
LAN Statistics:
• TX Total
Total number of packets sent successfully.
• TX Dropped
Total number of dropped packets; refers to the packets to
be sent.
• TX Collision
Total number of packets which were dropped due to
collisions on the medium; refers to the packets to be sent.
• TX Late Collision
A late collision indicates that another system attempted to
transmit after your machine (the one displaying the
message) has transmitted at least the first 60 bytes of its
frame (packet) Since the amount of time it takes to send 60
bytes (50.2 microseconds) is long enough for round trip
propagation delay on even the largest network, a correctly
configured network will never allow this transmission
condition. Something related to the network topology is
causing a problem.
A late collision invariably indicates that one or more
packets were lost by the Ethernet. They will almost always
be retransmitted by the “higher network layers,” but only
after a delay.
• TX Excessive Collision
Total number of packets where collisions occurred
repeatedly.
• TX Total
Total number of packets received successfully.
• RX Dropped
Total number of dropped packets; refers to the packets to
be received.
• RX Overflow
Total number of packets which were dropped due to
insufficient buffer; refers to the packets to be received.