9E132-15 / 9E133-36 / 9E138-12 / 9E138-36 Module Specific Information
4
MicroLAN Module Specific Statistics Screen Fields
NETWORK
Displays the code name of the selected network. The four possible values are
FNB, ENET 1, ENET 2, and ENET 3.
PORT
Displays the number of the selected port. (A specific port may be selected, for
example, ENET 1, ENET 2, or ENET 3.)
BYTES RECEIVED
Displays the number of bytes received.
FRAMES RECEIVED
Displays the number of frames received.
TOTAL ERRORS
Displays the total number of errors received.
COLLISIONS
Displays the number of collisions received.
OOW COLLISIONS
Displays the number of Out Of Window collisions. OOW collisions are usually
caused by the network being too long where the round trip propagation delay is
greater than 51.2
µ
sec. (the collision domain is too large), a station somewhere on
the network is violating Carrier Sense and transmitting at will, or a cable
somewhere on the network failed during the transmission of the packet.
CRC ERRORS
Displays the number of packets with bad Cyclic Redundancy Checks (CRC) that
have been received from the network. The CRC is a 4-byte field in the data packet
that ensures that the transmitted data that is received is the same as the data that
was originally sent.
ALIGNMENT ERRORS
Displays the number of errors due to misaligned packets.
UNDERSIZE PACKETS
Displays the number of packets received whose size was less than the minimum
Ethernet frame size of 64 bytes, not including preamble.
OVERSIZE PACKETS
Displays the number of packets received whose size exceeded 1518 data bytes,
not including preamble.
