xStack
®
DGS-3600 Series Layer 3 Managed Gigabit Ethernet Switch
Figure 8- 15. 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.
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 the MAX_PKT_LEN. Internally, MAX_PKT_LEN
is equal to 1536 octets, or if a VLAN frame of 1540 octets was received.
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 the error packets that were received that exceeded 1518 bytes, or for VLAN frames,
1522 bytes, and less than the MAX_PKT_LEN. The MAX_PKT_LEN is equal to 1536 bytes, and
1540 bytes for a VLAN frame.
Drop
The number of packets that are dropped by this port since the last Switch reboot.
Symbol
Counts the number of packets received that have errors received in the symbol on the physical
labor.
BuFullDr
Incremented for each packet that is discarded while the input buffer is full.
ACLDr
Incremented for each packet that is denied by ACLs.
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