Luxul XMS-1024 - Manual (Page 18)

User Guide
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5.4 Mirror
Port mirroring is used to transfer the packets of one or more monitored ports to
another port, allowing a security department or administrator to monitor Internet
access, traffi c fl ows and packets.
The bandwidth of the monitoring port cannot be lower than that of the
monitored port.
If the monitoring port is the monitored port, the system automatically ignores this
monitored port and does not duplicate the traffi c.
This function supports cross-VLAN monitoring. Monitoring is allowed even if the
monitored port and the monitoring port belong to different VLAN groups.

Mirror:

Mirror Port: Selects a port to serve as the monitoring port

Mirrored Port: Selects one or more ports to be monitored
5.5 VLAN
A VLAN or Virtual Local Area Networks can be used to establish secure autono-
mous broadcast/multicast domains. A VLAN is used to divide a network into
multiple network segments and/or to shrink broadcast domains for application or
departmental optimization. Within a VLAN, all Ethernet packets, such as unicast,
multicast, broadcast and unknown unicast packets will be transferred only to other
devices within the VLAN group. A VLAN can be used to change the topological
structure of the network without any movement of a network device or change of
network connections. You can modify the VLAN settings of a device for example,
to “move” a device from the VLAN of one group to that of another group. This
helps create secure, optimized departmental (or function/application specifi c)
networks that cannot be accessed by other departments, applications or functions.
This also means the network nodes or devices can be moved, changed or added
without having to physically move the device.