Finisar Surveyor 用户手册

12-3

Fragments

The total number of packets received that were less than 64 octets 
and had either an FCS/CRC error or an Alignment Error. 

Jabbers

The total number of packets that were received that were longer than 
1518 octets and had either an FCS/CRC error or an Alignment Error.

Oversize

The total number of packets received that were longer than the 1518 
octets and were otherwise well formed (good FCS).

Packets Dropped

The number of packets missed by Surveyor. For THGm cards, this 
value should be zero.

Undersize

The total number of packets received that were shorter than 64 octets 
and were otherwise well formed (good FCS).

Total Tx Collision

The total number of collisions that have occurred when attempting to 
transmit.

Tx Attempt

The number of transmission attempts that have failed.

Tx Defer

The number of times the transmitter had transmit data available and 
was ready to transmit but had to defer transmission due to sensing 
other traffic.

Tx Excessive Collision

The number of times packets collided 16 times without successful 
transmission.

Tx Excessive Defer

The number of times the transmitter had to defer for greater than 
3,036 byte times.

Tx Late Collision

The number of collisions that occur greater than 512 bit times after a 
transmission has started.

Undersize

The total number of packets received that were less than 64 octets in 
length and were otherwise well-formed (good FCS).

Very Long Event

The number of times the transmitter is active for greater than a maxi-
mum event length. The maximum event length is 4ms to 7ms for 
10Mbps network speeds and 0.4 to 0.75ms for 100Mbps network 
speeds.