Westermo Lynx Series User Manual

Page 25

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25

6640-3202

Errors

Description

Errors

Description

Collisions

The number of collision events 
seen by the MAC not includ-
ing those counted in Single, 
Multiple, Excessive or Late.  
This counter is applicable in 
half-duplex.

Fragments

Total frames received with a 
length of less than 64 octets 
and an invalid FCS

Oversize

Total frames received with a 
length of more than MaxSize 
octets but with an invalid FCS.

Undersize

Total frames received with a 
length of less than 64 octets 
but with a valid FCS.

Jabber

Total frames received with a 
length of more than MaxSize 
octets but with an invalid FCS.

Late

The number of times a 
collision is detected later 
than 512 bits-times into the 
transmission of a frame. This 
counter is applicable in half-
duplex only.

Frame 
checksum 
errors

Total frames received with 
a CRC error not counted 
in InFragments, InJabber or 
InRxErr.

Frame 
checksum 
errors Out

The number of frames 
transmitted with an invalid 
FCS. Whenever a frame is 
modified during transmis-
sion (e.g., to add or remove 
a tag) the frame's original 
FCS is inspected before 
a new FCS is added to a 
modified frame. If the origi-
nal FCS is invalid, the new 
FCS is made invalid too and 
this counter is incremented.

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