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communicate with those ports. Each port-based VLAN must be assigned a group name.
This switch can support up to a maximum of 8 port-based VLAN groups.
Tag-based:
Tag-based VLAN identifies its member by VID. Tag-based VLANs are different from port-
based VLANs. If there are additional rules in ingress filtering list or egress filtering list, the
packet will be screened with filtering criteria to determine if it can be forwarded. The switch
supports 802.1q.
Each tag-based VLAN must be assigned a VLAN name and VLAN ID. Valid VLAN ID is 1-
4094. You may create total up to 64 Tag VLAN groups.
Metro Mode:
The Metro Mode is a quick configuration VLAN environment method on Port-based VLAN.
You can create 14 or 15 port-based VLAN groups.
Double-tag:
Double-tag mode belongs to the tag-based mode, however, it would treat all frames as the
untagged ones, which means that tag with PVID will be added into all packets. Then, these
packets will be forwarded as Tag-based VLAN. So, the incoming packets with tag will
become the double-tag ones.
Up-link Port:
This function is enabled only when metro mode is chosen in VLAN mode.
Port 7:
Except Port 7, the switch ports cannot transmit packets with each other. Each port groups
a VLAN with Port 7, thus, seven groups consisting of two members are formed.
Port 8:
Except Port 8, the switch ports cannot transmit packets with each other. Each port groups
a VLAN with Port 8, thus, seven groups consisting of two members are formed.
Ports 7 and 8:
Except Port 7 and Port 8, the switch ports cannot transmit packets with each other. Each
port groups a VLAN with Port 7 and Port 8, thus, total six groups consisting of three
members are formed.
Waters Network Systems
Figure 5.28 – VLAN Mode
User's Manual
GSM-2108/GSM-1008SFP
Page 57
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