xStack® DES-3528/DES-3552 Series Layer 2 Stackable Fast Ethernet Managed Switch Web UI Reference Guide
Subnet VLAN
The Switch uses IP subnet-based VLAN classification to group devices.
Figure 3 - 1 Application of Subnet VLAN
The above figure is an example of subnet-based VLAN. The IP address of customer A is 172.18.0.1 and IP address of
customer B is 172.18.0.2. Both of them connect to the same port of the Switch through a HUB. Customers can access
Internet through VLAN 10 and the local server through VLAN 20. However, with the subnet VLAN configuration in the
example, IP 172.18.0.1 is assigned to VLAN 10 and 172.18.0.2 is assigned to VLAN 20. Customer A can only access
Internet, and customer B can only access the local server.
Subnet VLAN Settings
The subnet-based VLAN settings are used to create, find or delete a subnet-based VLAN entry. A subnet-based VLAN
entry is an IP subnet-based VLAN classification rule. If an untagged or priority-tagged IP packet is received on a port,
its source IP address will be used to match the subnet-based VLAN entries. If the source IP is in the subnet of an entry,
the packet will be classified to the VLAN defined for this subnet.
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