ICP DAS USA FSM-510G series, User Manual, Page: 33 / 99

VLAN Application Guide
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Example 3: IEEE 802.1Q Tagging
FSM-510G is able to construct layer-2 broadcast domain by identifying VLAN ID specified by IEEE
802.1Q. It forwards a frame between bridge ports assigned to the same VLAN ID and can set multiple
VLANs on each bridge port.
In the following figure, the tagged incoming packets are assigned directly to VLAN 100 and VLAN 200
because of the tag assignment in the packet. Port 2 is configured as a tagged member of VLAN 100, and
Port 7 is configured as an untagged member of VLAN 200. Hosts in the same VLAN communicate with
each other as if they in a LAN. However, hosts in different VLANs cannot communicate with each other
directly.
In this case:
1. The hosts from Group A can communicate with each other.
2. The hosts from Group B can communicate with each other.
3. The hosts of Group A and Group B can’t communicate with each other.
4. Both the Group A and Group B can go to Internet through IVS514F.