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User Guide 290
Configuring Private VLAN (Only for Certain Devices) Configuration Example
3
Configuration Example
3.1 Network Requirements
Usually, an ISP divides its network into subnets to differentiate different areas by using
VLAN. Company A belongs to Area VI which is marked as VLAN 6 by the ISP. It is required
that departments in Company A can achieve Layer 2 isolation by using VLAN and users in
the same department can communicate with each other.
3.2 Configuration Scheme
You can create primary VLAN and secondary VLAN and pair them into private VLAN. This
allows upper-layer switch to recognize only the primary VLAN instead of all the secondary
VLANs. Also, Company A can achieve Layer 2 isolation by using secondary VLAN.
Since it is required that users in the same department can communicate with each other,
secondary VLAN type should be configured as Community.
3.3 Network Topology
As shown in the following figure, Switch C is the ISP’s central switch, and Switch A is in
Company A. To meet the requirement, configure private VLAN on Switch A. This chapter
provides configuration procedures in two ways: using the GUI and using the CLI.
Demonstrated with T2600G-28TS, this chapter provides configuration procedures in two
ways: using the GUI and using the CLI.
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