Product Manual

DES-3526 / DES-3526DC Fast Ethernet Layer 2 Switch
To view the Received Error Packets Table, click the link View Table, which will show the following
table:
The following fields can be set:
Parameter Description
Figure 8- 10. Rx Error Analysis window (table)
Time Interval Select the desired setting between 1s and 60s, where "s" stands for seconds. The
default value is one second.
Record Number Select number of times the Switch will be polled between 20 and 200. The default
value is 20.
Crc Error Counts otherwise valid packets that did not end on a byte (octet) boundary.
Under Size The number of packets detected that are less than the minimum permitted packets
size of 64 bytes and have a good CRC. Undersize packets usually indicate collision
fragments, a normal network occurrence.
Over Size Counts packets received that were longer than 1518 octets, or if a VLAN frame is
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.
Jabber The number of packets with lengths more than the MAX_PKT_LEN bytes. Internally,
MAX_PKT_LEN is equal to 1522.
Drop The number of packets that are dropped by this port since the last Switch reboot.
Show/Hide Check whether or not to display Crc Error, Under Size, Over Size, Fragment, Jabber,
and Drop errors.
Clear Clicking this button clears all statistics counters on this window.
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