D-Link DGS-3204 - Switch - EN 100VG-AnyLAN User Manual page 119

Errors
The information is described as follows:
Link Status Indicates whether the port is online
and working (1000/Full/Flow
1000/Full/Flow control on) or not (Link Down)..
Jabber Counts frames longer than the maximum
1518 bytes (octets) with either bad framing or an
invalid CRC.
Dropped Frames
are dropped due to any of the following reasons:
lack of available receive buffers, port-disable, link-
test-fail, spanning tree, or empty distribution list.
Other errors:
CRC + Alignment
that did not end on a byte (octet) boundary.
Web-Based Network Management
Gigabit Ethernet Switch User's Guide
control
Counts received packets which
Counts otherwise valid frames
off or
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