ZyXEL Communications VES-1000 Series, Руководство пользователя, Страница: 99 / 227

VES-1000 Series Ethernet Switch
Statistics 12-11
Table 12-6 Port Details
LABEL DESCRIPTION
Jabber This field shows the number of packets received that were greater than the maximum octets
(specified for the system by the configuration software) long and with either CRC or
alignment error(s).
Alignment This field shows the number of packets received of proper size but with CRC error(s) and a
non-integral number of octets.
Late Collision A late collision is counted when a device detects a collision after it has sent the 512th bit of
its frame. This field shows the number of times such a collision is detected.
0 Collision This field shows the number of packets with no collision detected.
1 Collision This field shows the number of packets with 1 collision detected.
Multi Collision This field shows the number of packets with 2 to 15 collisions detected.
Excessive
Collision This field shows the number of packets with in excess of 15 collisions detected.
FCS Error This field shows the number of frames received of the proper size but with CRC error(s) and
a non-integral number of octets.
Undersized This field shows the number of frames received that were less than 64 octets long and
without CRC error(s) or alignment error(s).
Oversized This field shows the number of frames received that were greater than the maximum octets
long and without CRC error(s) or alignment error(s).
Symbol Error This field shows the number of frames received of the proper size but had symbol error(s)
during frame reception.
Dropped Packet The following five fields show reasons why packets were dropped.
Filter This field shows the number of good packets that were filtered by the switch because the
destination resided on the same network segment as the receiving port.
Buffer Full This field shows the number of good packets that were dropped because the input frame
buffer was full.
Storm This field shows the number of good broadcast or multicast frames that were dropped due
to too many broadcast or multicast frames accumulated in the input buffer.
VLAN This field shows the number of good frames that were dropped because the source and the
destination exist on different VLAN domains.
Security This field shows the number of good frames that were dropped because the violation of the
switch security rules.
Poll Interval(s) The text box displays how often (in seconds) this screen refreshes.
Set Interval You may change the refresh interval by typing a new number in the text box and then
clicking
Set Interval .
Stop Click Stop to halt system statistic polling.
Clear Click this button to erase the above statistical information for this port.
Drop Click this button to temporarily disconnect this port. This is useful to refresh an unstable
VDSL port. After disconnection the selected port automatically reconnects after 30 seconds.