Physical Features
23
UTILIZATION
Represents the percent bandwidth consumed on the local
network:
•
Green (blinking): 0% to 50%.
•
Amber (blinking): 51% to 89%.
•
Red (blinking): 90% to 100%.
COLLISION
Amber (blinking): indicates that collisions have been
detected by the instrument on the local network. The more
collisions detected, the faster the LED blinks.
ERROR
Red (blinking): indicates that errors have been detected on
the local network segment. Possible errors include the
following:
•
Bad FCS: a packet that has an invalid checksum.
•
Undersized packet: a packet that has fewer than 64
bytes.
•
Oversized packet: a packet that has more than 1518
bytes.
•
Jabber: a packet that has more than 1518 bytes and
also has an invalid checksum.
•
Ghost: energy on a cable that appears to be a real
frame but the frame does not have a valid start-frame
delimiter.
TRANSMIT
Green (blinking): indicates the instrument is transmitting
packets. Note that the more transmit activity, the faster the
LED blinks.
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