HP 10Base-T Hub 24M Manual page 77

Configuration Reference
6-20
CRC/Alignment Errors. Displays the number of instances where the
Cyclic Redundancy Check (CRC) method was used to detect a packet
whose bits were misaligned because of timing errors. CRC is a method for
detecting timing errors on a frame or packet. The CRC is a code typically
placed at the end of the frame or packet to ensure the integrity of the data
within the frame.
Fragments. Displays the number of instances where remaindered
portions of large frames from one network have been recorded. Fragmen-
tation is the process in which large frames from one network are broken
up into smaller frames compatible with the network to which they'll be
forwarded.
Jabbers. Displays the number of instances where a packet had both of
the following problems associated with it:
• the packet was too big in its byte count (more than 1518 bytes) and
caused timing delay in processing of it because of its oversized state.
Commonly known as oversize.
• the packet had a corrupted bit in it where one of the digits was
transposed for any of a variety of reasons, including timing and
alignment errors. This corrupt bit was detected during the packet
checksum process executed on the hub when it received the packet.
Commonly known as a Cyclic Redundancy Check or Frame Check
Sequence error.