Cabletron Systems SEHI100TX- - Manual (Page 63)

Chapter 7: Local Management
7-22 SEHI100TX User’s Guide
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
s (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.
RUNT PACKETS
Displays the number of runt packets received from the network. A runt
packet is less than the minimum Ethernet frame size of 64 bytes, not
including preamble.
GIANT PACKETS
Displays the number of packets received that exceed 1518 data bytes, not
including preamble.
PORT ADMIN. STATUS
Displays the administrative status of the port selected. The two possible
status messages are Enable or Disable.
PORT SEG. STATUS
Displays the segmentation status of the port selected. The two possible
status messages are Segmented or Unsegmented. The SEHI and SEH
automatically partition problem segments, and reconnect non-problem
segments to the network.
ENABLE PORT
This command lets the user enable the selected port.
DISABLE PORT
This command lets the user Disable the selected port.
SEHI Book Page 22 Wednesday, May 15, 1996 10:42 AM