Cisco Cisco Aironet 340 Ethernet Bridges Mode D'Emploi
9 - 6 Aironet 340 Series Bridge
n Misses: The number of Ethernet packets that were lost due to a lack
of buffer space on the unit.
n Excessive Collisions: Number of times transmissions failed due to
excessive collisions. Usually indicates the frame had to be continu-
ously retried due to heavy traffic on the Ethernet infrastructure.
ously retried due to heavy traffic on the Ethernet infrastructure.
n Deferrals: Number of times frames had to wait before transmitting
due to activity on the cable.
n Excessive Deferrals: Number of times the frame failed to transmit
due to excessive deferrals. Usually indicates the frame had to be
continuously retried due to heavy traffic on the Ethernet infrastruc-
ture.
continuously retried due to heavy traffic on the Ethernet infrastruc-
ture.
n No Carrier Sense Present: Number of times the carrier was not
present when a transmission was started. Usually indicates a prob-
lem with a cable on the Ethernet infrastructure.
lem with a cable on the Ethernet infrastructure.
n Carrier Sense Lost: Number of times the carrier was lost during a
transmission. Usually indicates a problem with a cable on the Ether-
net infrastructure.
net infrastructure.
n Out of Window Collisions: Number of times a collision occurred
after the 64th byte of a frame was transmitted. Usually indicates a
problem with a cable on the Ethernet infrastructure.
problem with a cable on the Ethernet infrastructure.
n Underruns: Number of times the hardware transmit FIFO became
empty during a transmit. This should be a rare occurrence.
n Bad Length: Number of times an attempt was made to transmit a
packet larger than the specified maximum allowed.