Re: RUNT Packets
19.2.6.1.10 aRunts
ATTRIBUTE
APPROPRIATE SYNTAX:
Generalized non-resettable counter.This counter has a maximum
increment rate of 75 000 counts per second.
BEHAVIOUR DEFINED AS:
Increment counter by one for each CarrierEvent that meets one of
the
following two conditions.Only one test need be made.(1)The
ActivityDuration is greater than ShortEventMaxTime and less than
ValidPacketMinTime and the CollisionEvent signal is
deasserted.(2)The
OctetCount is less than 64,the ActivityDuration is greater than
ShortEventMaxTime and the CollisionEvent signal is deasserted.
ValidPacketMinTime is greater than or equal to 552 bit times and less
than
565 bit times.An event whose length is greater than 74 bit times but
less
than 82 bit times shall increment either the aShortEvents attribute or
the
aRunts attribute but not both.A CarrierEvent greater than or equal to
552
bit times but less than 565 bit times may or may not be counted as a
runt.
ValidPacketMinTime has tolerances included to provide for circuit
losses
between a conformance test point at the AUI and the measurement
point
within the state machine.
NOTE —Runts usually
indicate collision fragments,a normal network event.
In certain situations associated with large diameter networks a
percentage of runts
may exceed ValidPacketMinTime.
At 02:49 AM 11/14/00 -0800, James Colin wrote:
Louis, Bob
Can you explain the term "runt packets"?
Thank you,
James
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