xStack
®
DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch
302
Figure 7 - 14 Rx Error Analysis window (table)
The following fields can be set:
Parameter Description
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
200
.
Crc Error
Counts otherwise valid packets that did not end on a byte (octet) boundary.
UnderSize
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 nor-
mal network occurrence.
OverSize
Counts valid packets received that were longer than 1518 octets and less than the
MAX_PKT_LEN. Internally, MAX_PKT_LEN is equal to 1536.
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
Counts invalid packets received that were longer than 1518 octets and less than the
MAX_PKT_LEN. Internally, MAX_PKT_LEN is equal to 1536.
DropPkts
The number of packets that are dropped by this port since the last Switch reboot.
SymbolErr
Counts the number of packets received that have errors received in the symbol on the
physical labor.
BufFullDr
Incremented for each packet that is discarded while buffer full.
ACLDr
Incremented for each packet that is discarded while buffer full.
MultiDr
Incremented for each multicast packet that is discarded.
