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packet with VID=100 (VLAN name=VLAN100), and if rule 1 is enabled, the switch will check if
port 1 is a member of VLAN100. If it is, the received packet is forwarded; otherwise, the
received packet is dropped.
Rule 2:
Drop untagged frame. You can configure a given port to accept all frames (Tagged and
Untagged) or only tagged frames. If you choose all frames, the packets with tagged or untagged
will be processed. If you choose only tagged frames, only the packets carrying VLAN tag will be
processed. The remainder of the packets will be discarded.
Note: For example, if rule 1 is enabled, port 1 receives an untagged packet, the switch will apply the
PVID of port 1 to tag this packet. The packet then will be forwarded. But if the PVID of port 1 is 100 and
port 1 is not member of VLAN 100, the packet will be dropped.
Role:
This is an egress rule of the port. You can choose Access, Trunk or Hybrid. Trunk means the
outgoing packets must carry VLAN tag header. Access means the outgoing packets carry no
VLAN tag header. If packets have double VLAN tags, one will be dropped and the other will still
be left. Hybrid, is similar to Trunk, and both of them will tag-out. When the port is set to Hybrid,
its packets will be untagged out if the VID of the outgoing packets with tag is the same as the
one in the field of Untag VID of this port.
Untag VID:
Valid range is 1~4094. Works only when Role is set to Hybrid.
5.17
MAC Table
MAC Table Configuration gathers many functions, including MAC Table Information, MAC Table
Maintenance, Static Forward, Static Filter and MAC Alias, which cannot be categorized to some
function type. They are described below.
Function name:
MAC Table Information
Function Description:
Waters Network Systems
Figure 5.36 – VLAN Tag Rule
User's Manual
GSM-2108/GSM-1008SFP
Page 63
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