User manual

Publication ENET-UM001I-EN-P - January 2010 145
Monitor Diagnostics Chapter 10
Media Counters
Alignment Errors A frame containing bits that do not total an integral multiple of eight.
FCS Errors A frame containing eight bits, at least one of which has been corrupted.
Single Collisions The number of outgoing packets that encountered only one collision during transmission.
Multiple Collisions The number of outgoing packets that encountered 2...15 collisions during transmission.
SQE Test Errors A test to detect the collision-present circu
i
t between a transceiver and a network
interface card (NIC).
Important: Because m
ost NICs now have an integrated transceiver, the SQE test is
unnecessary. Ignore this media counter.
Deferred Transmissions The number of outgoing packets whose transmission is deferred because the network is
busy w
hen the first attempt is made to send them.
Late Collisions The number of times two devices transmit data simultaneously.
Excessive Collisions The number of frames that experience 16 consecutive collisions.
MAC Transmit Errors Frames for which transmission fails due to an internal MAC sublayer transmit error.
Carrier Sense Errors Times that the carrier sense condition was lost or never asserted when attempting to
transmit
a frame.
Frame Too Long The number of incoming packets that exceed the maximum Ethernet packet size.
MAC Receive Errors Frames for which reception on the Ethernet interface failed due to an internal MAC
sublayer receiv
e error.
Ethernet Statistics Web Page
This f
i
eld Specifies