Cisco Cisco Aironet 340 Ethernet Bridges ユーザーガイド

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.

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.

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.

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.

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.

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.