4.4.7
VLAN
Virtual LAN (VLAN) is a logical networking group which control broadcast
domain. It can isolate the network info and only inform the VLAN member of
the message from the same VLAN member. Logically, VLAN among
switches is equivalent to re-connect a group of networking devices to another
layer-2 switch. Physically, all the networking devices are connected with the
same switch.
Default VLAN support is to be enabled and all ports belong to default VLAN,
VID is 1.
１
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Port-based VLAN(IEEE 802.1Q VLAN)
Port-based tag rule VLAN is IEEE 802.1Q standard, so it is possible to
set up VLAN among devices from different suppliers. IEEE 802.1Q
VLAN employs adding tag to Ethernet frame technology. The tag
contains VLAN ID (VID) for indicating VLAN quantity.
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Protocol-based of VLAN
To enable the end to send packets to different VLANs, the end can either
add VLAN tag or is connected to the bridge of a VLAN with tag. The
bridge can be based not only default PVID but also other info relevant to
packets, such as protocol, to classify the packets and add different
VLAN tags.
KIEN5000 and KIEN6000 industrial Ethernet switch supports
protocol-based VLAN. It is realized by selecting different general
protocol ex: Novell IPX and AppleTalk’s Ether Talk, and programmable
protocol etc in some degree.
