ICP DAS USA MSM-508FCS - Manual (Page 21)

Industrial Ethernet Layer 2 Managed Switch – Web Management Manual
April 29, 2008 18
7. VLAN
Virtual LANs (VLAN) allows you to setting logical groups of devices, even they are not located on
the same physical segment. The logical group called a VLAN, all devices belong to the VLAN has
the same network attributes, and it’s isolated from the other network logically. A VLAN provides
higher communication security, and makes you to limit traffic flooding easily.
VLAN Mode
Port Based VLAN The frames which arrive at specified ports belong to the same
VLAN.
802.1Q Check Mode Set mode to 802.1Q VLAN. Forward Ingress frames that
frames aren’t the VLAN member, but discard ingress frame
which VID is unrecognized.
802.1Q Secure Mode Set mode to 802.1Q VLAN. Discard Ingress frames that frames
aren’t the VLAN member and VID is unrecognized.