User manual

Publication 1783-UM003D-EN-E - December 2009 139
Chapter 4
Media Counters Collisions
• Single – the number of single collisions.
• Multiple – the number of multiple collisions.
• Late – the number of late collisions.
• Excessive – the number of frames for which
transmission fails due to excessive collisions.
Errors
• Alignment – the number of frames received that
are not an integral number of octets in length.
• FCS (Frame Check Sequence) – the number of
frames received that do not pass the FCS check.
• SQE Test Errors – the number of times that the SQE
TEST ERROR message is generated.
• Deferred Transmissions – count of transmissions
deferred by busy network.
• MAC Xmit Errors – the number of frames that failed
to transmit due to an internal MAC sublayer
transmit error.
• MAC Recv Errors – the number of frames that failed
to be received due to an internal MAC sublayer
receive error.
• Carrier Sense – the number of times the carrier
sense condition was lost or never asserted when
attempting to transmit a frame.
• Frame Too Long – the number of frames received
that exceed the maximum permitted frame size.
These counters allow you to view the number of
collisions on a link.
These counters allow you to view errors.
In this field Values are Comments