Chapter 5
Configuration Using the Web-based Utility
26
24/48-Port 10/100 + 4-Port Gigabit Smart Switch with Resilient Clustering Technology and PoE
Remove
To remove the port from a VLAN, select the VLAN
from the list on the right and click
Remove
. The VLAN ID
will appear in the list on the left without the “T” or “U”.
Tagging
When you are adding a port to a VLAN, specify
whether the port is
Tagged
(default) or
Untagged
.
Click
Save
to save your changes and leave the screen open,
Save & Close
to save your changes and close the screen, or
click
Close
to close the screen without saving your changes.
Statistics
The Statistics tab contains the
Interface Statistics
screen,
which lets you display statistics for a specified interface.
Statistics > RMON Statistics
Statistics > RMON Statistics
This screen allows you to display RMON statistics for the
Ethernet port or LAG that you specify. You can also specify
the rate at which the display will be refreshed.
Interface
To display statistics for an Ethernet port, select
Unit No.
, then select the desired unit number and port
from the drop-down menus. To display statistics for a LAG,
select
LAG
and then select the desired LAG from the drop-
down menu.
Refresh Rate
Select the rate at which to refresh the
statistics display. The values are
15 sec
,
30 sec
,
60 sec
, and
No Refresh
(default).
Drop Events
Displays the number of dropped events
that have occurred on the interface since the device was
last refreshed.
Received Bytes (Octets)
Displays the number of octets
received on the interface since the device was last
refreshed. This number includes bad packets and FCS
octets, but excludes framing bits.
Received Packets
Displays the number of packets
received on the interface, including bad packets,
Multicast and broadcast packets, since the device was last
refreshed.
Broadcast Packets Received
Displays the number of
good broadcast packets received on the interface since
the device was last refreshed. This number does not
include Multicast packets.
Multicast Packets Received
Displays the number of
good Multicast packets received on the interface since the
device was last refreshed.
CRC & Align Errors
Displays the number of CRC and
Align errors that have occurred on the interface since the
device was last refreshed.
Undersize Packets
Displays the number of undersized
packets (less than 64 octets) received on the interface
since the device was last refreshed.
Oversize Packets
Displays the number of oversized
packets (over 1518 octets) received on the interface since
the device was last refreshed.
Fragments
Displays the number of fragments (packets
with less than 64 octets, excluding framing bits, but
including FCS octets) received on the interface since the
device was last refreshed.
Jabbers
Displays the total number of received packets
that were longer than 1518 octets. This number excludes
frame bits, but includes FCS octets that had either a bad
Frame Check Sequence (FCS) with an integral number of
octets (FCS Error) or a bad FCS with a non-integral octet
(Alignment Error) number. The field range to detect
jabbers is between 20 ms and 150 ms.
Collisions
Displays the number of collisions received on
the interface since the device was last refreshed.
Frames of xx Bytes
Number of xx-byte frames received
on the interface since the device was last refreshed.
Clear Counters
Click
Clear Counters
to reset all the
counters on this screen to zero.
Refresh Now
Click
Refresh Now
to refresh the display
immediately with the latest information.
Statistics > RMON History
The RMON History screen contains information about
samples of data taken from ports. For example, the samples
may include interface definitions or polling periods.