3-5
Port Mirroring
Port mirroring (also called port spanning) is a tool that allows you to mirror the traffic from one or
more ports onto another port, without disrupting the flow of traffic on the original port. Any traffic
that goes into or out of the monitored port(s) will be duplicated at the mirror port. This traffic can
then be analyzed at the mirror port using a monitoring device. A network administrator will
typically utilize this tool for diagnostics or debugging, or to fend off attacks.
Port Mirroring State:
Select the
mirroring mode - Disable, Rx, Tx, or Both Rx & Tx.
Analysis Port:
This is the mirror port. You can analyze the traffic of all the monitored ports at this
port without affecting the flow of traffic on the port(s) being monitored. A network administrator
would typically connect a LAN analyzer or Netxray device to this port.
Monitor Port(s):
These are the ports you want to monitor. The traffic of all monitored ports will
be copied to the mirror ports. You can choose a single port, or any combination of ports, but you
can only monitor them in one mirror mode. To disable this function, set the monitor port to
None.
Once you finish your configuration, click on
Apply
to apply your settings.
Note:
Always remember to select
Save Configuration
to save your settings. Otherwise, the
settings you made will be lost when the switch is powered off.
VLAN Configuration
A Virtual LAN (VLAN) is a “logical” grouping of nodes for the purpose of limiting a broadcast
domain to specific members of a group, but without physically grouping the members together.
That is, a VLAN allows you to isolate network traffic so that only members of the VLAN would
receive traffic from the same VLAN members. Basically, creating a VLAN from a switch is the
logical equivalent of physically reconnecting a group of network devices to another Layer 2
switch, without actually disconnecting these devices from their original switch.
This switch supports both port-based and 802.1Q (tagged-based) VLAN’s. The VLAN Operation
Mode is set to “
disable
” by default.
