D-Link DES-3250TG manual CrcError, UnderSize, OverSize, Fragment, 132

D-Link DES-3250TG Standalone Layer 2 Switch

Figure 9- 10. Rx Error Analysis window (table)

The following fields can be set:

Parameter	Description
Time Interval [1s ]	Select the desired setting between 1s and 60s,
	where “s” stands for seconds. The default
	value is one second.
Record Number [200]	Select number of times the Switch will be
	polled between 20 and 200. The default value
	is 20.
CrcError	Counts otherwise valid frames that did not
	end on a byte (octet) boundary.
UnderSize	The number of frames detected that are less
	than the minimum permitted frame size of 64
	bytes and have a good CRC. Undersize
	frames usually indicate collision fragments, a
	normal network occurrence.
OverSize	Counts packets received that were longer
	than 1518 octets, or if a VLAN frame 1522
	octets, and less than the MAX_PKT_LEN.
	Internally, MAX_PKT_LEN is equal to
	1522.
Fragment	The number of packets less than 64 bytes
	with either bad framing or an invalid CRC.
	These are normally the result of collisions.

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